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Doctor insights on: Common Side Effects Of Synthroid

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What are the common side effects of synthroid (thyroxine)?

What are the common side effects of synthroid (thyroxine)?

There are none: Synthroid (thyroxine) is a man-made replacement for your own thryroid hormone. There are no side effects per se because the drug will bind to the same receptors that your thyroid hormone binds to so the body does not use the drug as a synthetic. It is possible to take too much Synthroid (thyroxine) and then have effects of excess thyroid like rapid heart beat. ...Read more

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Dr. David Sneid
1,401 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more


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What are side effects of too much levoxyl (thyroxine)?

What are side effects of too much levoxyl (thyroxine)?

Hyperthyroid: Too much Levoxyl (thyroxine) can give you the symptoms of hyperthyroidism. Most importantly it can cause osteoporosis . You can have a rapid heart rate, tremor, diarrhea , hair loss, elevated blood pressure, anxiety and weight loss among others. It is important if you are on this medication to see your doctor regularly and check your thyroid levels. ...Read more

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What are the side effects of levoxyl (thyroxine) hormone?

What are the side effects of levoxyl (thyroxine) hormone?

None: If the dose is appropriate, there should be no side effects of thyroid hormone replacement. The body does not differentiate a normal amount of thyroid hormone coming from your thyroid gland or from a pill. ...Read more

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Weights loss as a side effects of thyroxine use - how much is too much?

Weights loss as a side effects of thyroxine use - how much is too much?

When TSH is low: People who take thyroxine for simple hypothyroidism should have normal TSH to be safe. They should not loose weight, unless their prior weight gain was due to hypothyroidism. Taking too much thyroxine can cause atrial fibrillation and osteoporosis. On the other hand people with thyroid cancer are sometimes given a slight excess of thyroxine to prevent the cancer from returning. ...Read more

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How many weeks after beginning 25mcg of Synthroid (thyroxine) can side effects occur?

How many weeks after beginning 25mcg of Synthroid (thyroxine) can side effects occur?

Thyroid treatment: 25 mcg of levothyroxine is a very low dose; a normal dose for hypothyroidism is typically much higher. The only side effect is taking too much (hyperthyroidism: palpitations, sweating, tremor, etc) or not taking enough (hypothyroid: fatigue, cold, etc). But such symptoms can be from other things. You need to get levels checked and talk to the doctor who initially prescribed this. ...Read more

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Is one of the side effects of levoxyl (thyroxine) insomnia?

Is one of the side effects of levoxyl (thyroxine) insomnia?

Theoretically: This is medication used to treat hypothyroid or thryoid replacement. Usually taken first thing in morning without other medications. If thyroid levels are up too high, can see insomnia. Usually the medication itself does not cause significant degree of insomnia. ...Read more

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I have to stop taking Synthroid (thyroxine) for a thryroid scan test. What are the side effects, I have been on medication for 8 years?

Fatigue: Main symptom would likely be fatigue. May get constipated, palpitations, restless feelings, being grumpy. But if u'r doc ordered I strongly suggest u follow up. It's only a week, and u may not even experience much. ...Read more

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My 4 year old took 8 of my 200mcg synthroid (thyroxine). The p.A.-c said it would not bother him. But I am still worried. Is there instant side effects or longer?

Overdose: Call poison control right now. They will calculate how much he got according to his weight and they will tell you what you need to do and what symptoms he/she may have. Any time your child takes medications not prescribed for him/her always call poison control right away. The number should be in the front of your phone book. ...Read more

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Can taking Synthroid (thyroxine) have side effects occasionally like tremors and sweating?

Can taking Synthroid (thyroxine) have side effects occasionally like tremors and sweating?

Too much Thyroid?: Hi taking too much thyroid medication can lead to all kinds of problems, including sweating and heart palpitations and rapid heart beat. If you are experiencing these symptoms it is time for a visit to your physician and a blood test to measure your TSH levels at the very least. ...Read more

Dr. Joseph Mathews
607 doctors shared insights

Synthroid (Definition)

Synthroid is a thyroid ...Read more