Top
10
Doctor insights on: Long Term Effects Of Levothyroxine

Share
1

1
What are the long term effects of synthroid (thyroxine)? I've read about connections to cancer.

What are the long term effects of synthroid (thyroxine)?  I've read about connections to cancer.

No connection: with cancer . People with a history of thyroid cancer often take synthroid (thyroxine) for the rest of their lives. Synthroid (thyroxine) is T-4 a form of thyroid hormone! ...Read more

See 1 more doctor answer
Dr. David Sneid
1,375 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more


2

2
Is propantheline tablets ok to take long term , & also to whilst taking Levothyroxine ?

Is propantheline tablets ok to take long term , & also to whilst taking Levothyroxine ?

I didn't know: anyone was still taking this out-moded anticholinergic medication. Why are you taking it. It's ok to take with levothyroxine, but brand name levothyroxine is better and more reliable than generic. ...Read more

3

3
Diagnosed with Hashimoto's disease by my specialist today, I've been prescribed levothyroxine long term to help with hypothyroidism. Will it get worse?

Diagnosed with Hashimoto's disease by my specialist today, I've been prescribed levothyroxine long term to help with hypothyroidism. Will it get worse?

Thyroid Banzai!!: Ahh so. Hashimoto's is an auto-immune problem, which means that your body's immune system, for some reason, decides that your thyroid is foreign territory & starts to eat away at it in attempt to destroy it. Lotsa fun, huh? So in the course of this self-destruction, the thyroid could act up or, as in your case, wind down, so your Rx is just part of the picture. Keep in close contact with your doc! ...Read more

4

4
Are there any effects of prolonged taking of levothyroxine (after five or more years)?

Are there any effects of prolonged taking of levothyroxine (after five or more years)?

Thyroid Treatment: Nope. This is a drug you will take for the rest of your life. It is as close to being on the real thing as there is in medicine. ...Read more

6

6
How long before I have energy for physical activities again after starting levothyroxine?

How long before I have energy for physical activities again after starting levothyroxine?

Be careful.: You must be very careful with this drug, as it can cause heart failure and other things if given in too large a dose. Overdose can show effects as long as 6 - 11 days aftter ingestion, so you really should take it easy until your thyroid level in in the normal range and stays there. Your doctor will want to see you often for level checks and dose adjustment, so talk to him/her for the best time. ...Read more

7

7
I was born without a thyroid how long can I live without medication i take 200 mcg of levothyroxine?

I was born without a thyroid how long can I live without medication i take 200 mcg of levothyroxine?

Quite a while: Without any thryoid hormone around you could live quite a while but you would become very uncomfortable. You would get fatigue, mental slowing, weight gain and constipation. Later more serious life threatening conditions could occur. I would seriously suggest that you not stop the thyroid replacement medication and see your healthcare provider regularly to make sure the dose is correct. ...Read more

8

8
How long does it take for levothyroxine to start working?

How long does it take for levothyroxine to start working?

Takes its time. : The full effect of levothyroxine is not immediate. When we start the medication anew or change its dose, we usually have to wait at least three weeks to perform blood tests to see its full effect. So it does take its time. ...Read more

9

9
How long for a lower dose of levothyroxine to take effect?

How long for a lower dose of levothyroxine to take effect?

Levothyroxine: If your current dose of levothyroxine is causing you to have a high thyroid level and getting symptoms I suggest you stop for a day or two and then re-start with half the original dose. To be sure you should have your doctor check your thyroid levels every three to six months. ...Read more

10

10
After Levothyroxine is taken how long does it take to kick in?

Depends: Hi. Levothyroxine (T4) takes about 5-6 weeks to get to equilibrium state in your blood. Biological effects may be felt sooner than that, of course, but in terms of lab testing after starting or changing a dose, you need to wait about 6 weeks to test when the dose is at equilibrium in the blood. T4 works by regulating gene expression; DNA to RNA to protein and the proteins affect tissue function ...Read more

Levothyroxine (Definition)

Of the hormone produced by one's own ...Read more