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Doctor insights on: Too Much Thyroxine Cause Hyperparathyroidism

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Dr. Brendan Stack Jr.
396 Doctors shared insights

Hyperparathyroidism (Definition)

A condition of having an overactive parathyroid gland, which results in higher levels of calcium in the blood, which may cause weakness, ...Read more


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T have a headache. Could Synthroid (thyroxine) be the cause?

T have a headache. Could Synthroid (thyroxine) be the cause?

Very unlikely: Synthroid is giving you levothyroxine, a naturally occurring compound that the thyroid normally makes. It is remotely possible (< 1% chance) that the headache could be due to a reaction to the dye in the pills. If so, then switching to 50 mcg pills (may need more than 1 per day) would eliminate the headaches. Read more

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Does l thyroxine cause osteoporosis? Or is it completely false?

Does l thyroxine cause osteoporosis? Or is it completely false?

Osteoporosis: It is very unlikely particularly if you are taking the dose your doctor prescribed and you have follow up labs. Read more

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Can my medication, synthroid, (thyroxine) cause my abdomine to swell?

Can my medication, synthroid, (thyroxine) cause my abdomine to swell?

No: Synthroid (thyroxine) is a duplicate of what your thyroid gland normally produces. As such it can only function like a normal thyroid, as long as you are on the correct dose, there are no adverse side effects. Read more

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I was taking too much Synthroid (thyroxine) when I conceived. Could this cause chromosonal abnormalities in the fetus?

I was taking too much Synthroid (thyroxine) when I conceived. Could this cause chromosonal abnormalities in the fetus?

No: Synthroid (thyroxine) level does not cause chromosomal abnormalities but it does affect the health of the fetus and the ability to carry through the pregnancy. If your level is too high, please see your doctor to get it readjusted during this critical time. Good luck. 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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Can excessive thyroxine cause permanent damage to your body?

Can excessive thyroxine cause permanent damage to your body?

Excess thyroxine: Can excessive thyroxine cause permanent damage to your body? . ANS: Yes. And it can kill you. Google hyperthyroidism and look at images. Discuss with your Dr. Who wrote the prescription if you are taking it as it needs to be monitored closely. Read more

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Can low vitamin d cause hyperparathyroid symptoms?

Can low vitamin d cause hyperparathyroid symptoms?

Unlikely: Agree with dr. Wingo. Low vitamin d can raise your parathyroid level but it should not cause hyperparathyroid symptoms. Most hyperparathyroid symptoms are caused by the elevated calcium which is not expected to happen in this case. Read more

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Can Synthroid (thyroxine) cause cardiac disturbances?

Can Synthroid (thyroxine) cause cardiac disturbances?

When overused: Yes. Taken in excess (or, much less commonly at a dose that's just too high for you) synthroid (thyroxine) can cause abnormal rhythms, particularly in the top chamber. These can manifest as palpitations, rapid heart rate, or even near-fainting symptoms. Lab tests can evaluate whether you have too much synthroid (thyroxine). Read more

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Would going on Synthroid (thyroxine) cause new allergy symptoms to emerge?

Would going on Synthroid (thyroxine) cause new allergy symptoms to emerge?

Depend what you mean: If you mean nasal or eye allergy symptoms then no. If you are getting a rash or more systemic type symptoms this would be possible and could indicate a drug allergy. Read more

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Can the wrong dosage and generic brand of levoxyl (thyroxine) cause irregular cycles?

Can the wrong dosage and generic brand of levoxyl (thyroxine) cause irregular cycles?

It may affect cycle: Thyroid medication is given to optimize thyroxine hormone so as you have regulated metabolism of entire body. Having low or high level of thyroxine has its consequences in your metabolism. Most common body systems affected are cardiovascular, GI and reproductive organ. You may have menstrual irregularity with low or high thyroxine hormone with manifesting either bleeding or amenorrhea. Read more

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Some confusion on hyperparathyroidism vs hyperthyroidism. What are symptoms and causes?

Some confusion on hyperparathyroidism vs hyperthyroidism. What are symptoms and causes?

Big difference: See prior answers re: hyperthyroidism. Hyperparathyroidism is entirely different disease. It's a hormonal disorder (with a feedback mechanism in the similar part of the brain); it is even located in thyroid gland (4 small glands). But it controls calcium/bone metabolism in the body. Suspicion is when serum calcium is high on a routine blood test (no sx usually); DX made by measuring parathormone. Read more

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Can you help? Could taking diet pills cause serious complications if taken with synthroid (thyroxine)?

Can you help? Could taking diet pills cause serious complications if taken with synthroid (thyroxine)?

It may affect absorp: It may hinder the absoption of synthroid (thyroxine) and you may not get the full dose of thyroid replacement as needed. So there is no absolute contraindication for taking diet pills and synthroid (thyroxine) as long as thyroid functions are monitored regularly and dose adjustment made if needed. Read more

Dr. David Sneid
1,413 Doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid agent. ...Read more


Dr. Joseph Mathews
612 Doctors shared insights

Synthroid (Definition)

Synthroid is a thyroid agent. ...Read more