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Doctor insights on: Synthroid

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Dr. Joseph Mathews
592 doctors shared insights

Synthroid (Overview)

Synthroid is a thyroid agent.nutritional or metabolic agent.


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I weigh 240 pounds, what could Synthroid (thyroxine) 100 mcg do for my weight?

I weigh 240 pounds, what could Synthroid (thyroxine) 100 mcg do for my weight?

Depends: Synthroid (thyroxine) is a medication used for folks with low thyroid gland function or hypothyroidism .. It should not be used as a medication to reduce your weight ... ...Read more

Dr. Joseph Mathews
592 doctors shared insights

Synthroid (Overview)

Synthroid is a thyroid agent.nutritional or metabolic agent.


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What exactly is an overdose of thyroxine for a hypothyroidism patient?

What exactly is an overdose of thyroxine for a hypothyroidism patient?

Symptomatic: Many times will treat based on symptoms once dz is confirmed (within a certain range of normal). If symptoms of hyperthyroid would cut down dose, ie anxiety, agitation, tremor, exophthalmos, palpitations, diarrhea, jittery, racing heart, overheating, significant wt loss, insatiable appetite etc.... ...Read more

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I haven't taken my Synthroid (thyroxine) in about a month. Since that month I have gained 25lbs. Is it because i'm off my synthroid (thyroxine)?

I haven't taken my Synthroid (thyroxine) in about a month. Since that month I have gained 25lbs. Is it because i'm off my synthroid (thyroxine)?

Probably two reasons: If you have been prescribed synthroid or levothyroxine replacement therapy, then your body likely needs thyroid hormone therapy to maintain normal thyroid levels. When you stop synthroid, and the thyroid levels become very low, you can then gain weight from two major factors: fluid retention, and slowed metabolism. Please check with your doctor to discuss what dose of synthroid you should restart. ...Read more

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Please describe the medication: synthroid (thyroxine)?

Please describe the medication: synthroid (thyroxine)?

It's thyroid hormone: Synthroid is one of several commercial (non-generic) brands of levothyroxine. Levothyroxine is the most common form of thyroid hormone replacement. ...Read more

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Can a doctor prescribe Synthroid (thyroxine) to increase a patient's appetite?

Can a doctor prescribe Synthroid (thyroxine) to increase a patient's appetite?

Not wise: That would not be a good idea. A high dose of synthroid (thyroxine) would increase metabolic rate (and put a stress on the heart) and appetite may/may not go up, but usually it would cause weight loss. Synthroid (thyroxine) should only be prescribed for hypothyroidism, or other clear thyroid related conditions, and should not be used for obesity or appetite. ...Read more

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What happens if people use Synthroid (thyroxine) to lose weight, then why do so many people complain that it makes them get fat?

What happens if people use Synthroid (thyroxine) to lose weight, then why do so many people complain that it makes them get fat?

Doesn't work: If your thyroid function is normal, taking thyroid hormone will not help you lose weight. You would need to take toxic doses to raise your metabolism high enough to lose weight, and will lose more muscle than fat. In addition, high thyroid levels make you more hungry, so many people will gain weight rather than lose. There is no "easy" solution to lose weight. Eat less, exercise more. ...Read more

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Can Synthroid (thyroxine) used to suppress the growth of a non-tox mng (euthyroid) continue to cause hyperthyroidism four months after discontinuing the pills?

Can Synthroid (thyroxine) used to suppress the growth of a non-tox mng (euthyroid) continue to cause hyperthyroidism four months after discontinuing the pills?

Probably not: Your multi-nodular goiter has probably evolved from euthyroid to hyperthyroid (or toxic). Thyroid hormone from tablets could take 6- weeks or so to clear, and if the TSH was very low or undetectable, it could take longer than 6 weeks to completely re-equilibrate after stopping thyroid tablets. But if thyroid hormone levels are still high, or TSH stays low, your thyroid is probably overactive. ...Read more

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Is iodine an effective supplement when also taken with synthroid (thyroxine)?

Is iodine an effective supplement when also taken with synthroid (thyroxine)?

Only if deficient: Iodine deficiency is quite common. A recent study in boston showed that 50% of pregnant women were iodine deficient. If you are tested and deficient, an iodine supplement will be helpful. There is emerging evidence that iodine deficiency may increase the risk of breast cancer as well as thyroid problems. ...Read more

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Why would my Synthroid (thyroxine) work for a couple months then stop working making me hypo where they have to up the med again?

Why would my Synthroid (thyroxine) work for a couple months then stop working making me hypo where they have to up the med again?

If you're: Taking brand name T4 replacement and not missing doses, and not taking it at the same time as iron/calcium/vitamins -- then it doesn't change how it works. Perhaps your thyroid has changed, or you're taking unreliable generic replacement. ...Read more

Dr. David Sneid
1,375 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more