levothyroxine - injection, Levothroid, Synthroid (cont.)
USES: Levothyroxine is used to treat an underactive thyroid (hypothyroidism). It is a man-made substance that replaces the natural substance (thyroid hormone) that is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. Having enough thyroid hormone in your bloodstream is important for maintaining normal mental and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development.This medication is also used to treat other types of thyroid disorders (e.g., certain types of goiters, thyroid cancer). It is also used to test thyroid activity.
HOW TO USE: This medication is given by injection into a vein or into a muscle as directed by your doctor, usually once a day. Dosage is based on your medical condition, thyroid hormone levels, and response to treatment.If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. Use this medication immediately after mixing. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely.Use this medication regularly in order to get the most benefit from it. To help you remember, use it at the same time each day. Do not stop using this medication without consulting with your doctor. Thyroid replacement treatment is usually taken for life.Symptoms of low thyroid levels include tiredness, muscle aches, constipation, dry skin, weight gain, slow heartbeat, or sensitivity to cold. These symptoms should improve in a few days as your body adjusts to this medication. Tell your doctor if your symptoms persist or worsen.
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.
Need help identifying pills and medications?
Back to Medications Index
- Allergic Skin Disorders
- Bacterial Skin Diseases
- Bites and Infestations
- Diseases of Pigment
- Fungal Skin Diseases
- Medical Anatomy and Illustrations
- Noncancerous, Precancerous & Cancerous Tumors
- Oral Health Conditions
- Papules, Scales, Plaques and Eruptions
- Scalp, Hair and Nails
- Sexually Transmitted Diseases (STDs)
- Vascular, Lymphatic and Systemic Conditions
- Viral Skin Diseases
- Additional Skin Conditions