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Doctor insights on: Effect Synthroid Thyroxine

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Dr. David Sneid
1,422 Doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid agent. ...Read more


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Possible side effect of synthroid (thyroxine)?

Possible side effect of synthroid (thyroxine)?

Rash: In general, it's a very safe drug. Possible side effect is a rash, caused by the dye used to make the pill color. When this happens, it's recommend to use the white pill to see if the rash goes away. The white pill contain no dyes. If the rash goes away, then it's likely the dye. Other side effects: if use too much: fast heartbeats, shaking, nervousness, diarrhea, headache, insomnia, hair loss. ...Read more

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Hi I am taking Synthroid (thyroxine) 50mcg since mar 5. Can headaches be a side effect of Synthroid (thyroxine) and will it go away as I get used to the medication?

Hi I am taking Synthroid (thyroxine) 50mcg since mar 5. Can headaches be a side effect of Synthroid (thyroxine) and will it go away as I get used to the medication?

Possibly: Headache is a common side effect for a lot of medications and is one of the possible side effect for synthroid (thyroxine). It could get better once you are used to it. If it doesn't, tell your doc. There are other options. ...Read more

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What is levoxyl (thyroxine)?

What is levoxyl (thyroxine)?

Levoxyl (thyroxine): This is a drug that is helpful for problems with the thyroid gland.
There are more than one types of this medicine but there are not many differences. ...Read more

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What stops thyroxine from working?

When you stop taking: Thyroxin stops working only when you stop taking it. ...Read more

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What does excess thyroxine do in the body?

What does excess thyroxine do in the body?

Hyperthyroidism: If you are hyperthyroid, it will cause symptoms; common ones are heat intolerance, palpitations, nervousness, tremor, diarrhea, irritability. It causes bone loss (osteoporosis) over time. It places a stress on your heart, which may be tolerated when young, but not with aging. It can be treated, but you may need to see an endocrinologist. ...Read more

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What can too much thyroxine do to the body?

What can too much thyroxine do to the body?

Problems: Like anything else, too much of a good thing is also no good. Too much thyroxine causes hyperthyroidism. This can cause palpitations, irregular heart rhythms, bone loss, muscle weakness, trouble sleeping, anxiety. In essence, thyroid hormone affects every part of your body. ...Read more

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Can I cut my Synthroid (thyroxine) in half?

Can I cut my Synthroid (thyroxine) in half?

Ask your treating Dr: Only your treating dr. Can answer that question after doing appropriate lab work for your thyroid, good luck. ...Read more

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Is generic Synthroid (thyroxine) okay to take?

Is generic Synthroid (thyroxine) okay to take?

Yes: Generic synthroid is called levothyroxine. Taking generic version is reasonable and will likely achivevsimilar results, however I would recommend that you inform your endocrinologist about such switch as you may need to have your thyroid levels checked soon (a few weeks) after making the switch to ensure your dosing is appropriate. I would also recommend that you adhere to one kind of preparation. ...Read more

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What can replace 200 MG synthroid (thyroxine)?

Generic form: There are several generic forms now available and very inexpensive, too. Also, before Synthroid, (thyroxine) Armour thyroid pills were used. There is no over the counter equivalent or supplement that does the job! Don't even try! ...Read more

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What are the symptoms of overdose of thyroxine?

What are the symptoms of overdose of thyroxine?

See below.: Thyroxine overdose can cause tremors, anxiety, increased heart rate, increased body temperature, agitation, confusion, diarrhea, and seizures. If you are ever worried that an overdose has occurred, call 911. If you’re less certain and feel the situation is less of an emergency, call 800.222.1222 for guidance. ...Read more

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Is 250 mcg of synthroid, (thyroxine) excessive?

Is 250 mcg of synthroid, (thyroxine) excessive?

Probably.: That is 2 1/2 times the average amount needed to treat someone with no thyroid gland. Hyperthyroidism would be a consequence ot taking a high dose. ...Read more

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What is the shelf life of synthroid (thyroxine)?

What is the shelf life of synthroid (thyroxine)?

Shelf life Synthroid (thyroxine): This is a question for your friendly neighborhood pharmacist ...Read more

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Is 93bpm with thyroxine notmal or obermedicated?

Is 93bpm with thyroxine notmal or obermedicated?

Can't tell: 93 BPM refers to your heart rate. Under 100 is normal. You cannot assess thyroid levels by looking at heart rate. You should have thyroid blood tests of TSH and free T4 to see if you are on the correct dose. ...Read more

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What are the symptoms of underdose of thyroxine?

Hypothyroidism: When thyroid hormone is low people symptoms are highly variable from person to person. Some people do not have symptoms from mildly low thyroid hormone. Symptoms depend on degree of deficit and amount of time the hormone has been low. Here are some symptoms that are possible; fatigue, constipation, weight gain, cold intolerance and dry skin. ...Read more

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Anything I can take OTC for levoxyl (thyroxine)?

Anything I can take OTC for levoxyl (thyroxine)?

No: If you need thyroxine (of which Levoxyl is just one brand) because you are hypothyroid in this country you need thyroxine. ...Read more

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Please describe the medication: levoxyl (thyroxine)?

Please describe the medication: levoxyl (thyroxine)?

It's thyroid hormone: Levoxyl 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 100 mcg thyroxine dosage cause sleepness nights?

Can 100 mcg thyroxine dosage cause sleepness nights?

Yes: Sure, if it is too much. Have your doctor measure serum T4 and tsh, and adjust the dose. ...Read more

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Syntroys or levoxyl (thyroxine) which one is better?

Both work: They are both used for thyroid deficiency. Sunthroid is brand name medicine and Levoxyl (thyroxine) is a different brand name. The both do the same thing ie correct thyroid deficiency. Both work. ...Read more

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Can I take St. John's wort if I am taking thyroxine?

No interactions: It should be safe to take thyroxine with St. John's wort. A lot of medications do interact with St. John's however, so it is good that you are considering it. Good luck. ...Read more

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Can there be no trace of thyroxine in someone's body?

Can there be no trace of thyroxine in someone's body?

Thyroxine: Strange question.
You cannot function without thyroid hormones.
They will have to given to you by pills if you don't make enough thyroid hormones yourself. ...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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What happens if you overdose on synthroid (thyroxine)?

What happens if you overdose on synthroid (thyroxine)?

Heart problems: Synthoid is a synthetic thyroid hormone. Thyroid increases your metabolism and too much will cause you to get febrile, jittery, tachycardic and hypertensive.
Serious problems with thryoid overdose are usually cardiac are related to arrythmias or heart attacks. For example frontline treatment for thyroid excess is giving a beta blocker that blocks the cardiac effects. ...Read more

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Can I get Synthroid (thyroxine) without a perscription?

NO: Synthyroid is a prescription medication used to treat thyroid conditions such as hypothyroidism (low thyroid state). It should not be used for weight loss or to "boost metabolism". There may be places to get this without a prescription but in my opinion, this would be against the pharmaceutical and medical laws of most states. If you need this medication get it from a reputable provider. ...Read more

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How long does thyroxine stay in your system? Thank you!

Weeks: Half-life elimination is 6–7 days for euthyroid patients; 9–10 days for hypothyroid patients; 3–4 days for hyperthyroid patients. That means that 1/2 of the drug hormone/medication still remains in the person 6-7 days after stopping the medication. The medication Levothyroxine is chemically the same as the naturally produced hormone thyroxine by the thyroid gland. ...Read more

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How do you know if your body needs synthroid (thyroxine)?

How do you know if your body needs synthroid (thyroxine)?

See a doctor.: An examination by a health care provider and a simple blood test will reveal if you need to be treated with levothyroxine (generic synthroid). Then you'll know for sure! ...Read more

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What will happen if I don't take my thyroxine medication?

Hypothyroid: Hi. If you're hypothyroid and don't take your l-thyroxine, you'll be untreated hypothyroid...but somehow, I betcha knew that! ...Read more

Dr. Joseph Mathews
618 Doctors shared insights

Synthroid (Definition)

Synthroid is a thyroid agent. ...Read more


Dr. Charles Gordon
219 Doctors shared insights

Levoxyl (Definition)

Levoxyl is a thyroid agent. ...Read more


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