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Doctor insights on: Common Antithyroid Medications

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What is the trade name for antithyroid drugs?

What is the trade name for antithyroid drugs?

Antithyroid: There are many products available. Have your doctor advise you and also discuss this with your pharmacist. Please only take FDA approved therapies. The pharmacist will be very helpful and maybe more so than your doctor. ...Read more

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When you start your antithyroid medication, how long does it take for you to feel better?

When you start your antithyroid medication, how long does it take for you to feel better?

Hyperthyroid treatmt: If you are hyperthyroid (eg. Graves disease) and start on a proper dose of methimazole, it may take several weeks for the T4 level to go down and for you to feel better. This is why beta blockers are often used; they don't affect the T4, but they help you feel better right away. ...Read more

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Any side effects to antithyroid medication?

Any side effects to antithyroid medication?

Multiple but uncommon: One in ten patient on antithyroid drugs can have rashes, joint pains, bad taste in their mouth. More rarely, patients may have a reversible drop in their white blood cells. This is a dangerous but rare side effect that can lead to severe infection. Even more rarely, liver disease can occur, and an inflammation of the blood vessels called vasculitis. Your doctor should explain all this carefully so taht you can recognize side effects timely. ...Read more

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Why in treatment of hypothyrodism start with high dose of antithyroid drugs and in hypothyrodism start wiith low dose of thyroxin?

Why in treatment of hypothyrodism start with high dose of  antithyroid drugs and in hypothyrodism start wiith low dose of thyroxin?

Side Effects: Starting with a fairly high dose of thyroxine may cause palpitations, insomnia and possible atrial fibrillation. If serum TSH is over 10, start with 50ug thyroxine and every 2 weeks increase to 75 etc., then 88 etc. ...Read more

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Will thyroid hormones or antithyroid medications interfere with a tc99m pertechnetate thyroid scan?

Will thyroid hormones or antithyroid medications interfere with a tc99m pertechnetate thyroid scan?

Not usually: Technetium is usually trapped by thyroid gland and used to determine in young children and infants the configuration of thyroid gland, hypoplasia, absence, or increased size or hyperplasia, or abnormal location. Radioactive iodine is used in older patients for determine function of thyroid gland, increased function or hyperthyroiidism or decreased function, hypothyroidism. ...Read more

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Can you stay on antithyroid medication indefinitely rather than definitive treatment for Graves' disease ?

Can you stay on antithyroid medication indefinitely rather than definitive treatment for Graves' disease ?

Meds for Grave's: 52F from UK asks if one can take antithyroid meds indefinitely rather than definitive treatment for Graves' Disease. ANS: Yes and sometimes one can even stop after a period of time but need to weigh side effects of meds vs radiation and your other circumstances that are best assessed by your thyroid Dr. ...Read more

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Does a young female of age 29 with toxic multinodular goiter difficult to conceive along with the antithyroid medication..Will i get pregnant?

Yes, it can.: Thyroid disease impacts fertility. Both elevated and low levels of thyroid hormone can have an impact. For this reason, you should continue your medication. (ptu (propylthiouracil) is better than mtx in pregnancy.) be sure to discuss these concerns with your physician. ...Read more

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Iam pregnant at 8 weeks, recently discovered hyperthyroidism tsh=0.01 with palpitations.Is it safe to take antithyroid drugs?Is it necessary?

Iam pregnant at 8 weeks, recently discovered hyperthyroidism tsh=0.01 with palpitations.Is it safe to take antithyroid drugs?Is it necessary?

Yes: Yes it is safe and is necessary but first you need to complete the workup. I recommend seeing an endocrinologist at this time to sort this out. If your doctor does not want to and opt to treat this, the recommendation is ptu (propylthiouracil) for the first trimester and tapazole 2nd trimester and onward. This is the new recommendation... But i highly recommend working this up systematically. ...Read more

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Can I breastfeed if I am taking antithyroid medicine for graves?

Can I breastfeed if I am taking antithyroid medicine for graves?

Breast Feeding thyro: Safety of breast feeding while on anti thyroid medicines.Anumber of studies found no effect on thyroid function and physical and intellectual development in infants who are brest fed while on ptu (propylthiouracil), (propylthiouracil) Methimazole and tapazole. Methimazole and tapazole cross in the milk easily, but ptu (propylthiouracil) is crossed in small amont and is preferable still some physicians have concern abut thyroid suupression, goiter and devel. ...Read more

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Could I breastfeed if I am taking antithyroid medicine for graves' disease?

Could I breastfeed if I am taking antithyroid medicine for graves' disease?

Maybe: Many pediatricians strongly discourage breastfeeding while taking ptu (propylthiouracil) or methimazole. These meds can affect the baby by lowering his thyroid hormone levels right at the time he needs them for growth and brain development. Others will monitor the baby for any signs of slow growth or get blood tests to check thyroid levels. Close supervision is essential. ...Read more

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