levothyroxine - injection, Levothroid, Synthroid (cont.)
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.
SIDE EFFECTS: Some hair loss may occur during the first few months of starting this drug. This effect is usually temporary as your body adjusts to this medication. If this effect persists or worsens, tell your doctor or pharmacist promptly.Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Though unlikely, it is possible to have too much thyroid hormone. Your doctor may need to reduce the dose of this medication. Tell your doctor immediately if any of these unlikely but serious signs of too much thyroid hormone occur: headache, mental/mood changes (e.g., nervousness, irritability), shaking, sweating, sensitivity to heat, diarrhea, weight loss, trouble sleeping, tiredness.Get medical help right away if any of these rare but very serious side effects occur: chest pain, shortness of breath, fast/pounding/irregular heartbeat, swelling of the hands/feet, seizures.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
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.
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