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Doctor insights on: How Does Thyroxine Affect Metabolism

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Dr. David Sneid
1,401 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more


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Once you begin taking Synthroid are you obligated to it forever? Recently, i skipped my levothyroxin 100mcg for 5 days. Before being prescibed and since I have had a slow metabolism. It seems that the 5 day break gave my metabolism a jump-start. Could thi

Once you begin taking Synthroid are you obligated to it forever? Recently, i skipped my levothyroxin 100mcg for 5 days. Before being prescibed and since I have had a slow metabolism. It seems that the 5 day break gave my metabolism a jump-start. Could thi

Thyroid forever: If you have acquired hypothyroidism you can never naturally regain your ability to manufacture naturally the thyroid hormone. This may be the most common medical diagnosis in american medicine. And, it means that you will need to take a daily thyroid replacement for as long as you live. ...Read more

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I take 50 mg of levothyroxine but my weight creeping up and up even with diet and excercise. Do I need to take more dose to higher my metabolism ?

I take 50 mg of levothyroxine  but my weight creeping up and up even with diet and excercise. Do I need to take more dose to higher my metabolism ?

No: Your dose of thyroid medication should be adjusted based on your lab tests. Your weight may or may not be related to your thyroid level. To loose weight you will need to burn off more calories than you take in. Take a close look at your activity level and total calorie intake. A good start is to keep intake below 1500 calories ...Read more

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Does 25mcg of levothyroxine raise one's metabolism? I'm taking it to treat my hypo (which it does). But i'm hoping it'll speed up weight loss? ?

Does 25mcg of levothyroxine raise one's metabolism?  I'm taking it to treat my hypo (which it does). But i'm hoping it'll speed up weight loss? ?

Not exactly: 25 mcg of levothyroxine is a rather small dose. To expect that to raise your metabolism is not realistic. But then the dose you need depends on how hypothyroid you are. You just do not take the medication to raise metabolism if you are not hypothyroid. ...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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If Synthroid (thyroxine) isn't working, would armour work better because it isn't synthetic?

If Synthroid (thyroxine) isn't working, would armour work better because it isn't synthetic?

No: Synthroid (thyroxine) takes several weeks to take effect. You need to be patient and follow your doctors instructions. The dose will probably need to be adjusted over the next several months. Armour is an outdated form of treatment for hypothyroidism and is not as effective. ...Read more

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If I have been using Synthroid (thyroxine) for years and it isn't working, should I ask about armour or something not synthetic?

If I have been using Synthroid (thyroxine) for years and it isn't working, should I ask about armour or something not synthetic?

There is: no such thing as Synthroid (thyroxine) "not working". If you take the proper dose to keep your levels normal, it's working. If you have other problems, they are not due to your hypothyroidism. Synthroid (thyroxine) is an exact duplicate of what your own thyroid makes. Armour thyroid is ground up pig glands that are not standardized, not testable by routine lab and dangerous. ...Read more

Dr. Joseph Mathews
607 doctors shared insights

Synthroid (Definition)

Synthroid is a thyroid ...Read more


Dr. Charles Gordon
218 doctors shared insights

Levoxyl (Definition)

Levoxyl is a thyroid ...Read more