- Side Effects
- Drug Interactions
- Pregnancy & Breastfeeding
- What Else to Know
Generic Name: vitamin A
Brand and Other Names: Retinol, Aquasol A, retinyl acetate, retinyl palmitate
Drug Class: Vitamins, Fat-Soluble
What is vitamin A, and what is it used for?
Vitamin A is a micronutrient that has many functions in the body and is essential for good health. Vitamin A is fat-soluble and is naturally present in many foods.
Vitamin A is used as a dietary supplement to compensate for natural deficiency and to treat dry eyes (xerophthalmia). Vitamin A deficiency is a common cause for night blindness. When used topically as a retinoid (Retinol), it is used to treat acne.
Vitamin A has several important functions:
- Essential for normal eye function and the maintenance of eye integrity; helps prevent dryness in the eye and enables visual adaptation to darkness
- Development and maintenance of epithelial tissue, the outermost protective layer on all internal and external body surfaces
- Helps bone development
- Plays a role in functional capacity of reproductive organs
- Strengthens the immune function
- Important for development of normal teeth and hair
- Crucial for normal fetal development
Two forms of vitamin A occur as natural dietary sources:
- Preformed vitamin A: Present in meat, fish, poultry and dairy products
- Provitamin A: Present in fruits, vegetables and plant-based products
Vitamin A dietary supplements are available over-the-counter in either form of vitamin A, or a combination of the two. Vitamin A absorption requires adequate absorption of fats, because it is not soluble in water. Excessive Vitamin A intake from supplements can lead to vitamin A toxicity, while intake from foods usually does not.
Uses of vitamin A include:
- Vitamin A deficiency
Vitamin A is also being studied (orphan designation) for use in:
- Do not take vitamin A supplements if you are hypersensitive to it or any of its components
- Do not take if your vitamin A levels are normal or high (hypervitaminosis A)
- Do not administer vitamin A as intravenous (IV) injections
- Individuals whose intestinal ability to absorb nutrients is impaired (malabsorption syndrome), should receive vitamin A as intramuscular (IM) injections, not orally
- Use with caution in patients with renal impairment
What are the side effects of vitamin A?
Side effects of vitamin A may include:
- Dry mucus
- Opacity of the cornea
- Inflammation of the membrane in the eye whites and inner surface of eyelids (conjunctivitis)
- Facial dermatitis
- Lip inflammation (cheilitis)
- Inflammatory lesions (granulomas) in acne
- Sticky skin
- Fragile outer skin layer (stratum corneum)
- Skin peeling in the palms and soles of feet
- Infection of tissue around the nail (paronychia)
- Hair loss (alopecia)
- Severe allergic reaction (anaphylaxis) and death after intravenous (IV) use
- Nausea, dizziness, headache, coma and death with acute overdose
Chronic vitamin A toxicity (hypervitaminosis A) from chronic high doses can cause:
- Bone loss (osteoporosis)
- Hair loss (alopecia)
- High cholesterol
- Swelling of the eye
- Mouth sores
- Liver failure
This is not a complete list of all side effects or adverse reactions that may occur from the use of this drug.
Call your doctor for medical advice about serious side effects or adverse reactions. You may also report side effects or health problems to the FDA at 1-800-FDA-1088.
What are the dosages of vitamin A?
- 7,500 U
- 8,000 U
- 10,000 U
- 25,000 U
- 50,000 U/ml
- 10,000 U
- 15,000 U
Recommended Daily Allowance (RDA)
Described as retinol activity equivalent (RAE)
1 RAE = Retinol 1 mcg
- 900 mcg per day (3,000 units per day)
- 700 mcg per day (2330 units per day)
- Older than 18 years pregnant: 750-770 mcg per day (2,500-2,600 units per day)
- Older than 18 years breastfeeding: 1300 mcg RAE (4330 units per day)
Upper Intake Levels
- Older than 18 years: 3,000 mcg per day RAE (10,000 units per day)
- During pregnancy: 3,000 mcg per day RAE (10,000 units per day)
- Lactation: 3,000 mcg per day RAE (10,000 units per day)
Vitamin A Deficiency
- Malabsorption or oral administration not feasible: 100,000 units per day injected intramuscularly for 3 days; then 50,000 units per day for 2 weeks, to be followed with oral therapy
- Oral therapy: take an oral therapeutic multivitamin containing 10,000-20,000 units per day of vitamin A for 2 months
- Deficiency prophylaxis: 10,000-50,000 units orally once per day
Xerophthalmia (off label)
- Recommended dose except for females of reproductive age: 200,000 units orally once daily for 2 days. Repeat dose again after 2 weeks
- Females of reproductive age with night blindness or Bitot's spots: 5,000-10,000 units per day; 10,000 units per day maximum of 25,000 units once weekly for no more than 4 weeks
Recommended Daily Allowance (RDA)
- Infants 0-6 months: 400 mcg/day RAE (1,333 units per day)
- Infants 6-12 months: 500 mcg/day RAE (1,666 units per day)
- Children 1-3 years: 300 mcg/day RAE (1,000 units per day)
- Children 3-8 years: 400 mcg/day RAE (1,333 units per day)
- Children 8-13 years: 600 mcg/day RAE (2,000 units per day)
- Children 13-18 years: 900 mcg/day RAE (3,000 units per day)
Upper Intake Levels
- Children 0-3 years: 600 mcg per day RAE (2,000 units per day)
- Children 3-8 years: 900 mcg per day RAE (3,000 units per day)
- Children 8-13 years: 1,700 mcg per day RAE (5,667 units per day)
- Children 13-18 years, pregnant: 2,800 mcg per day RAE (9,333 units per day)
- Children 13-18 years, breastfeeding: 2,800 mcg per day RAE (9,333 units per day)
Vitamin A Deficiency
- Use intramuscular route when oral administration is not possible or in malabsorption syndrome
- Infants: 7,500-15,000 units per day for 15 days
- Children 1-8 years: 17,500-35,000 units per day for 10 days
- Children 8 years and older:
- Malabsorption or oral administration not feasible: 100,000 units per day, intramuscular for 3 days, then 50,000 units per day for 2 weeks; follow with oral therapy
- Oral therapy: take an oral therapeutic multivitamin containing 10,000-20,000 units of daily vitamin A for 2 months
- Deficiency prophylaxis: 10,000-50,000 units orally once per day
- Infants under 6 months: 50,000 units once per day for 2 days, repeat once with single-dose after 2 weeks
- Infants 6-12 months: 100,000 units once per day for 2 days, repeat with single-dose after 2 weeks
- Children over 12 months, except females of reproductive age: 200,000 units once per day for 2 days, repeat with a single dose after 2 weeks
- Females of reproductive age with night blindness or Bitot's spots: 5,000-10,000 units per day, 10,000 units per day with a maximum of 25,000 units once weekly for no more than 4 weeks
What drugs interact with vitamin A?
Inform your doctor of all medications you are currently taking, who can advise you on any possible drug interactions. Never begin taking, suddenly discontinue, or change the dosage of any medication without your doctor’s recommendation.
- Vitamin A has no known severe interactions with other drugs.
- Serious interactions of vitamin A include:
- Moderate Interactions of vitamin A include:
- Vitamin A has minor interactions with at least 45 different drugs.
The drug interactions listed above are not all of the possible interactions or adverse effects. For more information on drug interactions, visit the RxList Drug Interaction Checker.
It is important to always tell your doctor, pharmacist, or health care provider of all prescription and over-the-counter medications you use, as well as the dosage for each, and keep a list of the information. Check with your doctor or health care provider if you have any questions about the medication.
Pregnancy and breastfeeding
- Vitamin A is a micronutrient essential for the health of pregnant women and normal development of the fetus. Vitamin A requirements are greater in pregnant women, and supplemental vitamin A intake during pregnancy is acceptable.
- Vitamin A intake during pregnancy, however, should not exceed the daily recommended dose; excessive vitamin A levels, particularly during the first quarter of pregnancy can cause fetal harm or spontaneous abortion.
- Vitamin A is present in breast milk and is a beneficial nutrient to the breastfeeding baby; must not exceed daily recommended dose.
What else should I know about vitamin A?
- The best way to meet daily requirements of vitamin A is to eat/drink foods rich in vitamin A.
- Do not exceed the daily recommended dose if you take vitamin A supplement.
- Vitamin A is marketed as a dietary supplement and does not require extensive pre-marketing approval from the FDA; use with caution.
Vitamin A is a micronutrient used as a dietary supplement to compensate for natural deficiency and to treat dry eyes (xerophthalmia). When used topically as a retinoid (Retinol), it is used to treat acne. Side effects of vitamin A may include dry mucus, opacity of the cornea, inflammation of the membrane in the eye whites and inner surface of eyelids (conjunctivitis), facial dermatitis, lip inflammation (cheilitis), inflammatory lesions (granulomas) in acne, and others. Acute overdose of vitamin A can cause nausea, dizziness, fatigue, headaches, skin peeling, liver failure and coma that can lead to death. Never exceed the daily recommended dose of vitamin A, especially if pregnant.
Multimedia: Slideshows, Images & Quizzes
Rosacea, Acne, Shingles, Covid-19 Rashes: Common Adult Skin Diseases
Learn to spot and treat skin conditions commonly found in adults such as acne, Covid-19 rashes, eczema, shingles, psoriasis,...
Vitamins and Supplements: What to Know Before You Take Herbal Supplements
Not all herbs and supplements are safe, especially if you have certain medical conditions or take some drugs. Find out which ones...
Nutritional Health: 19 Key Vitamins and Minerals Your Body Needs
Minerals and vitamins are key nutrients your body needs to thrive. Vitamin A, vitamin C, vitamin D, vitamin E, niacin, and...
Vitamin D Deficiency: How Much Vitamin D Is Enough?
What does vitamin D do? Learn about vitamin D benefits and discover foods that are high in vitamin D. Explore vitamin D...
Vitamins and Supplements: Signs You're Low on Vitamin B12
Your body needs vitamin B12 to keep blood cells healthy and to make your nerves work right. But what happens when you run low?
Vitamins and Supplements: What Can You Take to Fight Inflammation?
Arthritis, intense exercise, and sugary or fatty foods are some of the things that can lead to inflammation. Here’s what you can...
Skin Health: How to Get Clear Skin
Acne, pimples, zits and blemishes often appear on the face, back, chest, neck, and shoulders where skin has the most amount of...
Vitamin E: What You Need to Know
Find out why you need vitamin E, where you get it, and what it does for your body.
Acne: Causes, Solutions and Treatments for Adults
Adult acne causes include hormones, medications, makeup, and other things. Adult acne is treated with medications, products, face...
Vitamin B: Are You Getting Enough of All Kinds?
You may have heard of vitamin B12 and folic acid. But did you know there are other important B vitamins? Find out more from this...
Supplement Smarts: Best Ways to Take Different Vitamins
Taking a vitamin supplement to cover your nutritional bases? Find out how and when to take it so your body gets the most from it.
How to Get Rid of Acne: Skin Care Tips
Want to know how to get rid of blackheads? Discover tips on clogged pores, sunscreen SPF and how to remove makeup for different...
Acne: Foods That Cause and Fight Acne and Pimples
How can you get rid of acne breakouts with nutrition? Does this food cause acne? Milk, chocolate, and seaweed are all considered...
Picture of Cystic Acne
Cystic acne is a type of abscess that is formed when oil ducts become clogged and infected. See a picture of Cystic Acne and...
Picture of Erythematous Deep Acne Scars
Acne scarring is a common sequel of severe inflammatory or cystic acne. It can present in a mild or cosmetically disfiguring...
Picture of Acne Vulgaris Nodulocystic
The common form of acne, in teens and young adults, that is due to overactivity of the oil (sebaceous) glands in the skin that...
How to Get Rid of Acne: Medication, Best Treatment, Cystic Acne
What is the best treatment for acne vulgaris? Can food choices influence acne? How can you get rid of blackheads? Learn why it's...
Dry Eye Quiz: Test Your Medical IQ
What causes dry eye? Take this quiz to learn about dry eye syndrome and what can be done about it.
Vitamin C: What You Should Know
Want to see if you're getting enough vitamin c? Find out what you should know with this slideshow from WebMD.
Vitamins and Supplements: Test Your Medical IQ
Take the Vitamins & Supplements Quiz to learn just how many essential vitamins your body needs to function!
Skin Quiz: Acne, Dry Skin, Dandruff & More
What's that all over you? Skin, of course! Test your knowledge of your most amazing organ with the Skin Quiz!
Acne (Pimples) Quiz: Test Your Medical IQ
Acne is the most common skin disorder in the world. If you suffer from acne, you are not alone and many treatment options are...
Vitamin D Quiz: Test Your IQ of Dietary Supplements
What happens to the body when there is a vitamin D deficiency? Take the Vitamin D Quiz to find out what you may be missing.
Picture of Acne
Exactly what causes acne? Acne develops when cells and natural oils begin to block up tiny hair follicles in the skin. See a...
Picture of Baby Acne
Pink pimples ("neonatal acne") are often caused by exposure in the womb to maternal hormones. See a picture of Baby Acne and...
Vitamins and Supplements: Signs You're Low on Vitamin C
Worried you're coming up short on vitamin C? Here are some telltale symptoms to watch out for.
Vitamins and Supplements: 9 Ways to Get Vitamin K
It may not get as much attention as other nutrients, but vitamin K helps your blood clot and your bones grow. WebMD shows you how...
Vitamins and Supplements: Getting Enough A, B, C, D, E, and Omega-3 in Your Diet?
If you feel like something is a little off, but you're not sure exactly what, you may not be getting enough of some key vitamins...
Acne Care Pictures: Skin Care Dos and Don'ts
Explore quick acne cover-ups, dos and don'ts. See solutions on how to best handle pesky pimples and remedies to avoid.
Vitamin B6: Signs You're Not Getting Enough
B6 is a hard-working vitamin that affects everything from your mood to appetite to skin condition. Here are signs you may not...
Lactose Intolerant? How to Get Calcium and Vitamin D
See how to eat right when dairy gives you stomach problems. WebMD shows you ways to get calcium and vitamin D through...
Vitamins and Supplements: Foods High in Vitamin D
Vitamin D is important for your bones, blood cells, and immune system -- your body's defense against germs. Find out which foods...
Healthy Aging: Vitamins You Need as You Age
Your body needs more of certain vitamins and minerals as you hit your 40s and beyond. Find out which ones will benefit you -- and...
Eye Health: Foods, Vitamins and Nutrients to Improve Eyesight
Eye Health: Foods, Vitamins and Nutrients to Improve Eyesight
What Vitamins and Supplements Should I Take to Increase Fertility?
What to know about fertility and increase chances of getting pregnant. Learn how the benefits of folic acid, B12, zinc, and other...
Women's Health: 11 Supplements for Menopause
11 supplements and herbs for hot flashes and other menopause symptoms are shown in this slideshow from WebMD.
Vitamins and Supplements: 12 Eucalyptus Oil Benefits and Uses
Eucalyptus oil is a hardworking essential oil with a wide range of uses, from bug spray, to household cleaner, to pre-op calmer,...
Vitamins and Supplements: The Truth About Activated Charcoal
Activated charcoal is in food and toothpaste, drinks and supplements. It promises to remove odors, ease gas, clean teeth, and...
Related Disease Conditions
What Vitamins and Supplements Should Not Be Taken Together?
Some vitamins that should not be taken together, or have dosage limitations, include vitamin C with vitamin B-12, vitamin A supplement with vitamin A-rich foods, folic acid (vitamin B9) and vitamin B12, and vitamin E with vitamin K.
What Are the Benefits and Risks of Taking Amino Acid Supplements?
Learn whether taking amino acids is of a greater benefit or risk to your overall health. Amino acids are building blocks of protein. The amino acids come together to form proteins.
Is It Better to Take Vitamins in the Morning or Night?
Doctors recommend multivitamins for certain vitamin deficiencies. If you're taking a vitamin supplement for any type of vitamin deficiency, you should try to take it at a time when your body can best absorb it.
Vitamins and Calcium Supplements
Vitamins are organic substances that are essential for the proper growth and functioning of the body. Calcium is a mineral essential for healthy bones and is also important for muscle contraction, heart action, and normal blood clotting. Check out the center below for more medical references on vitamins and calcium supplements, including multimedia (slideshows, images, and quizzes), related disease conditions, treatment and diagnosis, medications, and prevention or wellness.
Why Do I Get Pimples on My Butt?
Everyone can get pimples on their posterior. Learn what they are, what causes pimples on the butt, how doctors diagnose them, and how you can treat pimples on the butt. Learn how your lifestyle changes can make acne worse, including diet, exercise, and cosmetics.
Vitamin D Deficiency
Vitamin D deficiency has been linked with rickets, cancer, cardiovascular disease, severe asthma in children and cognitive impairment in older adults. Causes include not ingesting enough of the vitamin over time, having limited exposure to sunlight, having dark skin, and obesity. Symptoms include bone pain and muscle weakness. Treatment for vitamin D deficiency involves obtaining more vitamin D through supplements, diet, or exposure to sunlight.
Pimple vs. Cold Sore
Pimples are areas of skin inflammation with pus in the center. Cold sores are fluid-filled blisters. Pimples are caused by bacterial overgrowth and inflammation. Cold sores are caused by infection with herpes simplex viruses (HSV-1 and HSV-2). Benzoyl peroxide and sometimes antibiotics treat acne. Antiviral medications accelerate the healing process of oral herpes.
Why Do We Get Forehead Pimples?
Why do we get forehead pimples? Learn the signs of acne on the forehead, how to treat it, and how to prevent future breakouts. You can make pimples go away fast by using medications and home care. Medications for pimples include antibiotics, birth control pills, and topical products containing benzoyl peroxide, retinoids, or salicylic acid. Home care for pimples includes cleaning your skin, avoiding oil-based cosmetics, avoiding rubbing alcohol and toners, and shampooing oily hair. Learn what medical treatments can help ease your pimples symptoms and speed up your pimple recovery.
Acne is a localized skin inflammation as a result of overactivity of oil glands at the base of hair follicles. This inflammation, depending on its location, can take the form of a superficial pustule (contains pus), a pimple, a deeper cyst, congested pores, whiteheads, or blackheads. Treatments vary depending on the severity of the acne.
Vitamin D Deficiency
How Do I Get Rid of a Pimple on My Nose Fast?
Learn what medical treatments can help treat a pimple on your nose and help you manage future breakouts. Retinol is a derivative of vitamin A and a common skin care ingredient that may help treat mild to severe acne and improve the appearance of the skin.
What Vitamin Deficiency Causes Ringing in the Ears?
Ringing in the ears has been linked to vitamin B12 and vitamin D deficiencies. Treating an underlying cause of tinnitus such as a vitamin deficiency may help relieve symptoms.
How Do I Get Rid of Deep Pimples on My Back?
Learn what medical treatments can help ease your back acne symptoms and speed up your recovery.
Why Am I Getting Pimples On My Chin?
Many people get acne on their chin. Learn the signs of chin acne, what causes it, and what you can do to treat it. Pimples or acne vulgaris is a common skin condition affecting teens and even some adults. The cause of acne is mainly hormonal. In the case of acne, prevention is the best cure. Hence, maintaining good skin health, avoiding cosmetics, washing face before going to sleep, and checking for hormonal issues are paramount.
How Do You Get Rid of Acne Scars Naturally?
Approximately 80% of people between the ages of 11 and 30 years old have acne due to hormonal changes, stress, menses, oil-based cosmetics or birth control pills. A variety of remedies including tea tree oil, coconut oil, honey and other substances may help get rid of acne scars naturally. The dermatologist has prescription treatments and procedures to reduce the appearance of acne scars.
How Do You Get Rid of Acne Scars Overnight?
Acne breakouts are common and quite frustrating. Strategies to get rid of acne will take time to work, so you must be regular and diligent in their application. Aloe vera, apple cider vinegar, cocoa butter, honey and cinnamon, green tea, tea tree oil and other substances improve skin's appearance.
Which Birth Control Is the Best for Acne and Weight Loss?
Birth control or contraceptive methods include several medications, devices, or tricks for preventing pregnancy. Birth control methods vary in their mode of action, effectiveness in preventing pregnancy, and the presence of any beneficial or undesirable effects.
Cystic acne is distinguished by painful nodules on the chest, face, neck, and back. This form of acne is known to scar. Treatment may incorporate the use of hormonal therapies, oral antibiotics, and prescription medications.
Dry eyes are caused by an imbalance in the tear-flow system of the eye, but also can be caused by the drying out of the tear film. This can be due to dry air created by air conditioning, heat, or other environmental conditions. Treatment may involve self-care measures, medications, or rarely, surgery.
Can Vitamin B12 Reverse Premature Gray Hair?
If vitamin B12 deficiency is the cause of premature graying, then it can be reversed with vitamin B12 supplementation.
Why Am I Getting Pimples on My Scalp?
Getting pimples on the scalp is a common but irritating problem. Learn the reasons for pimples on the scalp, how to treat pimples on the scalp, and how to keep pimples on the scalp from coming back.
How Long Does Cystic Acne Last?
What is cystic acne? Learn the signs of cystic acne, what causes cystic acne, how doctors diagnose cystic acne, and what you can do to treat cystic acne.
What Vitamins and Supplements Should I Avoid During Pregnancy?
You should always clear it with your obstetrician before taking any vitamins or supplements while pregnant.
How Do You Get Rid of Pimples Overnight?
Pimples or acne vulgaris is a common skin condition affecting teens and even some adults. The cause of acne is mainly hormonal. In the case of acne, prevention is the best cure. Hence, maintaining good skin health, avoiding cosmetics, washing face before going to sleep, and checking for hormonal issues are paramount.
What Are the Best Treatment Options for Acne Rosacea?
Learn what medical treatments can help ease your rosacea acne symptoms and speed up your recovery.
Can Vitamin E Oil Remove Dark Spots?
Despite the use of vitamin E in skin lightening creams, there is insufficient evidence on whether vitamin E oil can remove dark spots.
Can Too Much Acne Medication Make Acne Worse?
Using too many acne medications at once may make your skin irritated and result in more breakouts.
What Are the Best Eye Drops for Severe Dry Eyes?
Managing dry eyes usually starts with artificial tears. Learn about effective eye drop ingredients and how they work to relieve symptoms.
What Is the Most Effective Vitamin C Serum?
Vitamin C serums are skincare products that contain L-ascorbic acid, ascorbyl-6-palmitate, or magnesium ascorbyl phosphate. Effective vitamin C products contain between an eight and 20 percent concentration of vitamin C. They may also contain tyrosine, zinc, and vitamin E and be in an opaque bottle.
Hidradenitis Suppurativa (Acne Inversa)
Hidradenitis suppurativa (HS or acne inversa) is a chronic skin condition that causes painful red abscesses in the groin and armpits that may drain foul-smelling pus. Treatment options include weight loss, smoking cessation, topical antibiotics, and avoidance of tight-fitting underwear. Finasteride and adalimumab may be helpful for those with resistant cases of HS.
How Do You Get Rid of a Pimple Under the Skin Without Damaging Your Skin
Learn what pimples that occur under the skin are called, and what you can do about them
What Are the 3 Types of Acne Scars?
The 3 types of acne scars include atrophic scars, hypertrophic and keloid scars, and post-inflammatory hyperpigmentation.
Can Toothpaste Get Rid of Pimples Overnight?
The American Academy of Dermatology does not recommend using toothpaste on pimples because it may result in skin damage in the long run.
How Long Do Hair Supplements Take to Work?
Hair growth vitamins or herbal supplements are often used to promote healthy hair growth and regrowth. Taking hair growth supplements does not produce results overnight; it usually takes a long time (one to five years) to see results.
What Is Considered Severe Acne?
Severe acne causes breakouts that often extend deep into the skin. In severe acne, a single pimple or cyst can stay on the skin for weeks or months at a time. Grade III acne is considered severe acne.
What Is the Difference Between Acne Blackheads and Whiteheads?
Learn the difference between acne whiteheads and blackheads and how to treat each condition.
Vitamin K1 vs. K2
Because vitamin K1 and vitamin K2 absorb in the body differently and transport to body tissues differently, they may have different effects on your health.
How Do You Treat Cystic Acne?
Whether you get occasional whiteheads or persistent pimples, acne can be painful and frustrating. Luckily, most acne breakouts will clear up on their own. Cystic acne is different. Learn what medical treatments can help ease your cystic acne symptoms and speed up your recovery.
Natural Remedies for Acne Scars
What are acne scars? Learn how to treat acne scars and get rid of acne scars naturally.
What to Do After Popping a Pimple?
It is so tempting and oddly satisfying to pop the pesky pimple over your face. However, as weirdly tempting it is, your dermatologist does not advise it. The popping of a large pimple or squeezing out a blackhead by yourself may give you unwanted side effects, such as permanent, more noticeable, painful scars or inflammation.
What Foods Are Highest in Vitamin D?
What are the foods highest in Vitamin D? Learn about the best sources to make sure this vitamin is included in your diet.
What Does Vitamin D Do for the Body?
Vitamin D is an essential nutrient the body needs to keep bones and muscles healthy, as well as build a strong immune system.
What Does the Vitamin Biotin Do?
Biotin, also called vitamin H, belongs to the vitamin B complex group. It helps the body use carbohydrates, fats, and protein to release energy.
Can Drinking Water Get Rid of Acne and Help Clear My Skin?
Keeping your body hydrated is a well-known wellness tip. Water improves other functions that in turn improve the appearance of the skin.
What Vitamins Can Help Boost My Mood?
Studies have identified a few vitamins that can help boost your mood, including vitamin D, B vitamins, vitamin K, and vitamin C.
What Are the Symptoms and Causes of Vitamin D Deficiency?
What is vitamin D deficiency? Learn the signs of vitamin D deficiency and what foods you can eat to help prevent vitamin D deficiency.
Do Eye Vitamins Really Help?
Most eye health vitamins and supplements are meant for those suffering from age-related macular degeneration (AMD). Otherwise, they have very little effect on other eye diseases.
Are Collagen Supplements Good for You?
Collagen is one of the most abundant proteins found in humans and animals. It includes various structural proteins found in the skin, muscles, and bones. Collagen is essential for maintaining the health of skin, muscles, joints, and tendons.
How Do I Get Rid of Hormonal Acne?
Hormonal acne can be frustrating to deal with, but it’s usually treatable. Learn how to get rid of hormonal acne with these treatment options.
Do Hair Growth Vitamins Work?
Vitamins or herbal supplements for hair growth are often used to promote healthy hair growth and regrowth. If there is hair loss or hair damage associated with a serious nutritional deficiency of certain vitamins or minerals, hair growth supplements can help with hair growth or regrowth.
How Does Stress Cause Acne?
Excessive amounts of sudden and prolonged stress may cause changes in the brain and body chemistry. Stress increases the risk of acne by drying out the skin, ramping up oil production and increasing levels of stress hormones which ages the skin.
What Is a Good Family Multivitamin?
When looking for a good multivitamin for your family, consider one that has the following nutrients: vitamin D, Folate, Vitamin B-12Calcium, Iron, Zinc, and Magnesium.
How to Get Clear Skin: 15 Proven Tips for Fighting Acne
Acne is the most common skin problem that affects more than 80% of people at some point in their life. If not treated properly, it can lead to scars and dark marks on the skin which might take longer to go away.
How Do You Treat Dry Eyes?
Treatment for dry eye syndrome can include a range of home remedies and over-the-counter eye drops. For more severe cases, oral medication or surgery may be required.
What Is the Best Vitamin Supplement to Take?
Dietary supplements are a general term that includes vitamins, minerals, botanicals, probiotics and other products to supplement the diet. The best vitamin supplement differs from person to person depending on their gender, age and any health conditions they have.
Vitamins & Exercise: Heart Attack Prevention Series
Vitamins and exercise can lower your risk for heart attack and heart disease. Folic acid, vitamins, and homocysteine levels are interconnected and affect your risk for heart disease or heart attack. For better heart health, avoid the following fried foods, hard margarine, commercial baked goods, most packaged and processed snack foods, high fat dairy, and processed meats such as bacon, sausage, and deli meats.
What Is Vitamin K Good For?
Vitamin K helps your body make proteins that are needed for blood clotting and the building of healthy bones. Vitamin K can be effective in preventing bleeding problems in people with certain health conditions.
What Vitamins and Supplements Should I Take During Pregnancy?
Even if you eat a variety of nutritious foods, you may need to take pregnancy vitamins and supplements. This is especially true if you have a restricted diet, are pregnant with twins or multiples, have food allergies, or nutrient deficiencies. Talk to your doctor about your needs.
How Do You Know if You're Getting Enough Vitamin D?
Vitamin D is an important hormone in your body that helps you regulate your calcium and phosphorus balance and bone density. The best way to know if you’re getting enough vitamin D is if you get the recommended amount in your diet.
What Is the Best Treatment for Acne?
There are several treatments for acne available that can help restore your healthy skin. The first step in controlling acne is implementing good skincare habits.
How Do I Know If I Am Getting Enough Vitamin D?
Vitamin D is an important nutrient that helps your body function properly. The best way to find out if you are getting enough vitamin D through your lifestyle and diet is to take the 25-hydroxy vitamin D blood test.
What Actually Gets Rid of Acne?
We all love surprises, but not all surprises are pleasant. One such surprise being acne or pimple that may appear like an uninvited guest on our face. Often, this may happen right before an important event, such as a function or a presentation. Acne is one of the commonest skin conditions affecting almost everyone at some point in their life.
What Are the Benefits of Vitamin D?
Vitamin D is an essential nutrient for our bodies. Learn about eight benefits of vitamin D, how to know if you’re getting enough vitamin D, and what to eat to increase vitamin D in your body.
Does Vitamin D Protect Against COVID-19?
COVID-19 or coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It manifests as mild to moderate respiratory illness in most people who may not require any special treatment. Certain high-risk groups, such as older people and people with underlying health conditions (chronic respiratory diseases, diabetes, cancer and cardiovascular diseases), are more likely to get seriously ill.
Treatment & Diagnosis
- Skin FAQs
- Acne FAQs
- Vitamin D FAQs
- Vitamins and Supplements FAQs
- Dry Eye FAQs
- Dry Eyes and Contact Lenses
- Hepatitis C: Diet and Vitamins
- Osteoarthritis - Vitamin D May Prevent Progression
- Prostate Cancer Risk May Be Lowered By Vitamin E
- Accutane (isotretinoin) for Acne linked to birth defects, depression and suicide
- Do Oral Contraceptives Prevent Vitamin Absorption?
- Can Dermabrasion Cure Acne Scars?
- Is it Safe to Use Accutane for Acne?
- What Are Difference Between Synthetic and Natural Vitamins?
- Which Vitamins are Water Soluble and Fat Soluble?
- Can Vitamin E Cure Macular Degeneration?
- Can You Still Retain Symptoms Of PCOD (Acne, Obesity, Etc.) After Hysterectomy?
- How to Get Rid of Acne
- What Vitamin Supplements Should I Take?
- What's the Difference Between Fat- and Water-Soluble Vitamins?
- What Vitamins or Foods Interfere with Synthroid?
- Can I Still Take Vitamins After the Expiration Date?
- Does Vitamin D Deficiency Cause Symptoms?
- Vitamin D: Winterize Your Diet
- What Vitamin Should I Take for Nutrition?
Medications & Supplements
Prevention & Wellness
- 20 Vitamins and Supplements to Boost Immune Health for COVID-19
- Do Nitric Oxide Supplements Really Work?
- Is a Vitamin D Supplement as Good as Sunlight?
- What Is the Best Supplement for Joint Repair?
- Do Kids Need Vitamin Supplements?
- What Is the Best Fiber Supplement to Take?
- Which Foods Are Rich in Vitamin A?
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.