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Doctor insights on: What Happens If You Suddenly Stop Taking Levothyroxine

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What will happen if I stop taking levothyroxine?

What will happen if I stop taking levothyroxine?

Hypothyroidism: If you are taking levothyroxine because of hypothyroidism you will develop fatigue, constipation and weight gain over time and perhaps other symptoms. ...Read more

Dr. David Sneid
1,422 Doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid agent. ...Read more


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What happens if levothyroxine 25 milligrams is being stop?

Nothing if: Nothing will happen if after stopping your thyroid tests for tsh, t3, (liothyronine) T4 are normal, and needs to be checked. ...Read more

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If I stop taking levothyroxine, how many days will it take for me to see the result?

If I stop taking levothyroxine, how many days will it take for me to see the result?

Variable: Why are you on the med?
It will depend on metabolism and need, whether it would be a clinical
finding or a lab finding. ...Read more

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I'm on levothyroxine 25mcg and I take it everynight but im also taking supur hd every morning so I can work oput should I stop taking it?

I'm on levothyroxine 25mcg and I take it everynight but im also taking supur hd every morning so I can work oput should I stop taking it?

Ok to take: Super hd appears to be an otc supplement. Like most supplements, there are no studies that indicate that it does anything helpful for you. However, it should not interfere with the levothyroxine as long as you take it many hours later. ...Read more

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Could you tell me what happens if I stop taking levothyroxine & anemia tablets?

You will: Not feel well and be sick. Why would you want to do that to your body. Be thankful the medication will effectively treat your problems. Years ago, before treatment was available, both disorders were extremely dangerous and even fatal. ...Read more

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Levothyroxine stops working after 2 months, until dose is increased. Had 4 dose increases over a year. Why does it work for a while then stop?

Levothyroxine stops working after 2 months, until dose is increased. Had 4 dose increases over a year. Why does it work for a while then stop?

Thyroid failure: The most common cause of hypothyroidism in an adult is hashimoto's thyroiditis. This is a progressive destruction of the thyroid over months to years. So a dose of thyroid hormone that works now, may not be enough a year from now if the thyroid has less function. Eventually, you will be on a stable dose of thyroid hormone when the output of thyroid hormone from the thyroid ceases. ...Read more

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I've been on 100 mcg levothyroxine for 12 years and I want to stop cold turkey. Will I lapse into a coma? What's the worst that can happen and when?

I've been on 100 mcg levothyroxine for 12 years and I want to stop cold turkey. Will I lapse into a coma? What's the worst that can happen and when?

Why: If you really have a poorly functioning thyroid gland, the med just provides something your body cannot make. If stopped, you would gradually become hypothyroid, slowing of your metabolism, weight gain, changes in heart rate, temperature sensitivity, stooling pattern, etc would be gradual. You would realize you need the med in time to reverse the change. ...Read more

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I'm on 25mcg of levothyroxine (first 2 weeks), is it possible for it to only relieve my symptoms in the mornings and stop working by the evenings?

Unlikely: Two weeks is very short to feel the difference. Secondly, thyroid supplements are long acting once daily preparation which should work whole day. Lastly, there is interaction with food, other meds and variation between generic drug preparation. ...Read more

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If I stop taking levothyroxine after iodine radiation will I die?

If I stop taking levothyroxine after iodine radiation will I die?

Iodine radiation: Iodine radiation can be given to destroy the thyroid gland for problems with the gland.
Usually throid hormone replacement is necessary to maintain health. Levothyroxine is one of the thyroid medications that can be given to maintain health and sustain life. ...Read more

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I been taking levothyroxine 100 mg for a month now and my skin is burning feel like needles..... Should I stop taking this kind and get a diff kind..

I been taking levothyroxine 100 mg for a month now and my skin is burning feel like needles..... Should I stop taking this kind and get a diff kind..

"Burning skin": Please stop taking levothyroxine for a day or two and have your doctor order thyroid lab studies. If you thyroid labs are OK you need to see your doctor to find out what the trouble is. ...Read more

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I have been on. 05 of levothyroxine for 6 months. They just discovered I don't have the thyroid antibody. Is it ok to just stop taking the medicine?

I have been on. 05 of levothyroxine for 6 months. They just discovered I don't have the thyroid antibody. Is it ok to just stop taking the medicine?

Depends: Even if you don't have antithyroid antibodies, but if testing had shown an underactive thyroid previously, you would need to continue your thyroid supplement. An endocrenologist or thyroidologist would be best qualified to evaluate and advise you. ...Read more

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Been diagnosed and am being treated for hyperthyroidism with levothyroxine (0.05mg), felt no different before, feel no change, should I stop taking it?

Been diagnosed and am being treated for hyperthyroidism with levothyroxine (0.05mg), felt no different before, feel no change, should I stop taking it?

Hyper or hypothyroid: There must be some confusion. Hyperthyroidism is a condition with too much thyroid hormone and would never be treated with levothyroixine. Perhaps you were diagnosed with hypothyroidism and given levothyroxine for treatment. In any case see your doctor to discuss your situation and get properly treated. ...Read more

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My TSH was 4.10 high, so my gyn suggested levothyroxine 0.025mg, after one month it is 0.666, is it normal, can I stop taking the tablets?

My TSH was 4.10 high, so my gyn suggested levothyroxine 0.025mg, after one month it is 0.666, is it normal, can I stop taking the tablets?

No: Thyroid replacement is for maintenance, not cure. You'll need to have this monitored indefinitely unless your hypothyroidism was due to a specific limited illness such as dequervain's granulomatous thyroiditis. ...Read more

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I've been on 75mcg of levothyroxine 6 days total now. I'm having heart fluttering and anxiety. Can I stop taking until my doc is back from vacation?

Yes!: If you've never been on thyroid replacement before, it's entirely possible that starting on that dose could cause palpitations in susceptible people. In such cases, it's recommended that you start at 25, then 50, then 75 with at least 1-2 weeks between dose changes. I'd stop for now and talk further with your doctor. ...Read more

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LOST ABOUT 2/3 OF MY HAIR Now taking Levothyroxine 50mcg for just 3 weeks for low thyroid. HOW LONG BEFORE MY HAIR STOPS FALLING OUTDesperate for answ?

LOST ABOUT 2/3 OF MY HAIR Now taking Levothyroxine 50mcg for just 3 weeks for low thyroid. HOW LONG BEFORE MY HAIR STOPS FALLING OUTDesperate for answ?

Hair loss: Did this start before or after you started thyroxine?

If before you need to see a dermatologist.

If after thyroid therapy started you should see an Endocrinologist - thyroid specialist.. ...Read more

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My Thyroid TSH was 5.02 (H) before starting Levothyroxine 50mcg Taking it 3 weeks. How long before my hair stops falling out. Need help! ?

My Thyroid TSH was 5.02 (H) before starting Levothyroxine 50mcg Taking it 3 weeks. How long before my hair stops falling out. Need help! ?

Can take 6 months: Hair growth and loss goes in cycles. Any change in thyroid level can take 6 months to show a difference in hair growth or loss. Remember that hair naturally thins as we age in everyone, including women, so you should not expect to have the amount of hair you had 5-10 years ago ...Read more

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Thyroid TSH 5.02 (H) taking Levothyroxine 50mcg for 3 weeks. How long before my hair stops falling out. I've lost about 60% of my hair. Please help!

Thyroid TSH 5.02 (H) taking Levothyroxine 50mcg for 3 weeks. How long before my hair stops falling out. I've lost about 60% of my hair. Please help!

Hypothyroidism: A high TSH indicates that your thyroid hormone level is still low. Levothyroxine needs to be adjusted by your doctor and checked 6 weeks after adjustment. It is also important to check Free T4 to monitor thyroid treatment. Hair problems are common in thyroid problems but there are also other causes. See your doctor to determine the cause. OTC Minoxidil 2% topical is helpful to help hair regrowth ...Read more

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Can chronic autoimmune urticaria go into remission? Will taking levothyroxine for thyroid help stop the hives without taking antihistamines?

Can chronic autoimmune urticaria go into remission? Will taking levothyroxine for thyroid help stop the hives without taking antihistamines?

Yes: The average duration of chronic hives lasts for 5-6 years and thus remission is indeed possible. As for thyroid, I have only had one patient with thyroid antibodies benefited from thyroid replacement out of the many hundreds I have seen over the years. Usually antihistamine would be needed. Studies so far with thyroid replacement have mostly been negative. ...Read more

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Was told to stop taking levothyroxine for 6 weeks, now blood work reads t3/2.8 t4/0.98 and tsh/5.5. Today I got call to start right away 50mcg again.

Was told to stop taking levothyroxine for 6 weeks, now blood work reads t3/2.8 t4/0.98 and tsh/5.5. Today I got call to start right away 50mcg again.

Your TSH is high: Hi Myrna,
Your TSH, thyroid stimulating hormone, is high, which means that you have an under active thyroid gland. TSH levels are the most sensitive in diagnosing low thyroid. TSH is produced in a gland in the brain called the pituitary and its level increases in response to low thyroid hormone levels in the bloodstream.
I hope this answers your question. ...Read more

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Had TSH 2.65, is it hypothyroidism? Taking levothyroxine 25mcg and now its 1.95 but menses cycle is 37days or no mense. Will it be okay to stop levoth

Had TSH 2.65, is it hypothyroidism? Taking levothyroxine 25mcg and now its 1.95 but menses cycle is 37days or no mense. Will it be okay to stop levoth

Not hypothyroidism: TSH of 2.65 is within the normal range. Some people feel better when their TSH is lower within the normal range, closer to 1.0, but if supplementing your thyroid hormone is causing menstrual irregularity, then would recommend that you discontinue the levothyroxine. ...Read more

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Hashi since 03, levothyroxine 15 yrs. Labs good. New endo yesterday says stop all thyroid meds. Immediately. Wants to jump start my thyroid on its own?

Hashi since 03, levothyroxine 15 yrs. Labs good. New endo yesterday says stop all thyroid meds. Immediately. Wants to jump start my thyroid on its own?

Worth a try: Some Hashimoto patients have a residual amount of functional thyroid tissue after the autoimmune process has had its full effect. So in these patients, l-thyroxine may not be needed to maintain normal functioning. I think that idea has some merit ...Read more

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I've had blood tests, and had slightly low thyroid. I was put on levothyroxine, but didn't help. Was told to stop, still have symptoms, what to do?

I've had blood tests, and had slightly low thyroid. I was put on levothyroxine, but didn't help. Was told to stop, still have symptoms, what to do?

Find another MD: If you have symptoms of low thyroid and labs also show low thyroid. It is low thyroid unless proven otherwise. If levothyroxine did not help look at internet and see which physician is familiar with armour thyroid. Where levothyroxine fails armour thyroid can be helpful. Or look for broda Barnes foundation to give you a referral ...Read more

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Levothyroxine 50mcg for7 months. I started facing shortness of breath and reduced dosage to 25mcg. Now TSH is 0.4. Still sob. Should I stop my drug?

Levothyroxine 50mcg for7 months. I started facing shortness of breath and reduced dosage to 25mcg. Now TSH is 0.4. Still sob. Should I stop my drug?

NO: You should stop diagnosing and treating yourself. There are a hundred reasons for shortness of breath and you're only focused on one. You need a proper evaluation. Stopping your thyroid replacement will guarantee that you will add thyroid deficiency to the already muddy water since your medication has suppressed the pituitary's necessary stimulating hormone. ...Read more

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Can hair loss be related to hashimotos or is it levothyroxine? Will it stop falling? Can biotin help?

Can hair loss be related to hashimotos or is it levothyroxine? Will it stop falling? Can biotin help?

Low thyroid: Low thyroid will cause hair loss which should improve with therapy. Some people with autoimmune thyroiditis also have alopecia areata. Of course many other factors can influence hair loss, including birth control pills or iud or many meds. Many women have hair loss with age & hormone changes. Biotin is a waste of money but a dermatologist may help. ...Read more

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Thyroid TSH was 5.02 started Levothyroxine 50mcg just 3wks. How long before it starts to work? Lost lot hair still falling. How long before it stops?

Thyroid TSH was 5.02 started Levothyroxine 50mcg just 3wks. How long before it starts to work? Lost lot hair still falling. How long before it stops?

TSH: TSH was high and Levothyroxine is a very good treatment.

If you do not think you are getting better please ask your doctor to re-check your thyroid levels.

If that is too costly for you it should do you no harm if you alternate 1 tablet a day with one and a half tablets every other day for a week or so and see how you feel. ...Read more

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Radiation Head & Neck ended 4 mo ago thyroid TSH now 5.02 Levothyroxine 50mcg 2wks. Hair still falling. How long before hair stops falling out?

Radiation Head & Neck ended 4 mo ago thyroid TSH now 5.02 Levothyroxine 50mcg 2wks. Hair still falling. How long before hair stops falling out?

TSH 5.02: I can understand radiation of your thyroid gland in the neck but not radiation of your head. Are you sure that was done? If so you need to ask why.

More likely only the thyroid imaging was performed - not radiation.

Your TSH of 5.02 is a bit too high and you should probably be on a higher dose of levothyroxine. ...Read more

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Levothyroxine 50mvg 3 wks. Only TSH thyroid tested 5.02. Lost 90% of hair. How long B4 hair loss stops. Please help!

Levothyroxine 50mvg 3 wks. Only TSH thyroid tested 5.02. Lost 90% of hair. How long B4 hair loss stops. Please help!

Supposed to resolve: The hair loss is supposed to stop. I do recommend you see your primary care provider and if need be, an endocrinologist. I do think they might increase your Levo dose, but there's a chance you might benefit from T3 (liothyronine) hormone to provide symptomatic relief, especially with a TSH of 5.02. They need to rule out other causes of thyroid disease before treatment. ...Read more

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Total thyroidectomy 9 days ago. What would happen if I stopped taking levothyroxine?

Total thyroidectomy 9 days ago. What would happen if I stopped taking levothyroxine?

Can't live without: What happens if a driver takes her foot off the gas? The car would coast while slowing down, and then roll slowly until either hitting a speed bump or running out of gas. Then the car just stops and/or the engine dies. Humans cannot live without thyroid hormone. If one cannot make her own hormone anymore, she can take levothyroxine hormone pills at the correct dose, and live normally. ...Read more

Levothyroxine (Definition)

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