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Doctor insights on: Too Low Of A Dose Of Synthroid

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How long after getting proper dose of synthroid (thyroxine) should I begin to feel less symptomatic? last tsh was 23.

How long after getting proper dose of synthroid (thyroxine) should I begin to feel less symptomatic? last tsh was 23.

Usually on the order: Of two to three weeks. But I should warn you there are some patients that some neuromuscular and psychiatric symptoms can take months to resolve. It's also possible that some symptoms thought to be related to hypothroidism like fatigue or weight, may in fact be related to other factors/issues, even when the hypothyroidism is corrected. ...Read more

Dr. David Sneid
1,420 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more


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My granddaughter was given too low of a dose of synthroid (thyroxine). Her Tsh was 33. She is 20 weeks pregnant. Will the levels hurt the baby?

My granddaughter was given too low of a dose of synthroid (thyroxine). Her Tsh was 33. She is 20 weeks pregnant. Will the levels hurt the baby?

Followup is key: The key is in the followup here. What is clear is that it is abnormally low levels of T4 are to be avoided in pregnancy and can damage the baby. Keep all followups with ob for lab followups and medicine adjustments. ...Read more

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I take low dose synthroid, (thyroxine) is it ok to take l- carnitine?

I take low dose  synthroid, (thyroxine) is it ok to take l- carnitine?

It won't: affect the Synthroid, (thyroxine) but won't help you either, unless you just like putting unknown toxins in your body and wasting your money. Don't get your scientific information from friends, tv or internet scams. ...Read more

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Is it possible to stop taking thyroxine if starded at low dose and fof no more than 40 days ? Tsh was 3.2 when starting

Is it possible to stop taking thyroxine if starded at low dose and fof no more than 40 days ? Tsh was 3.2 when starting

OK: Should be no problem. Your thyroid function was actually normal when you started it. You do not need thyroid supplement. ...Read more

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Can you stop taking Synthroid (thyroxine) after (5-6)years of taking it? Borderline -low TSH is why it was prescribed. Dose .050mcg.

Can you stop taking Synthroid (thyroxine) after (5-6)years of taking it? Borderline -low  TSH  is why it was prescribed. Dose .050mcg.

Synthroid (thyroxine): You must mean a borderline high TSH for an underactive thyroid. Anyhow, the thyroid does not revert back to its normal level on its own, it ages with us and needs frequent monitoring, i would suggest not to stop it, but this is something you need to discuss with your doctor who knows you best. ...Read more

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Tsh has gone to .007 to .02 now .07 still very low! my Synthroid (thyroxine) 88 my lowest dose ever. Is this showing another problem? Pituitary?

Tsh has gone to .007 to .02 now .07 still very low! my Synthroid (thyroxine) 88 my lowest dose ever. Is this showing another problem?  Pituitary?

Appropriate: Your TSH level should go higher (as it has) as your dose of thyroid hormone is lowered. Tsh, a pituitary hormone which regulates thyroid output, moves inversely with the level of thyroid hormone. You latest level indicates your current dose of medicine is still higher than you need. You may need a very small dose. It's even possible that, at least for a while, you may need none at all. ...Read more

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TSH was 4.54. Repeated 4 months later and now is 5.01 (lab range 0.45-4.50). Any concern? Dr wants to do low dose synthroid. Only symptoms fatigue

TSH was 4.54. Repeated 4 months later and now is 5.01 (lab range 0.45-4.50). Any concern? Dr wants to do low dose synthroid. Only symptoms fatigue

Numbers are numbers: Lab result numbers are just numbers, so one needs to see the whole picture. A TSH above 4 can mean a person's thyroid gland is having trouble producing enough thyroid hormone. Some patients have symptoms of low thyroid hormones (hypothyroidism) with TSH values in the 3's and 4's... and need to take Synthroid medication. That is why a doctor's evaluation and care is helpful and necessary. ...Read more

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Does normal (1.01) "thyroxine (t4) free, direct, s, " normal (0.931) "tsh, " and low (67) "triiodothyronine (t3)" = Synthroid dose good? Or go up/down?

Does normal (1.01) "thyroxine (t4) free, direct, s, " normal (0.931) "tsh, " and low (67) "triiodothyronine (t3)" = Synthroid dose good? Or go up/down?

Thyroid tests: The tsh, and secondarily the ft4, are normally used to guide the dosage of levothyroxine replacement. T3 (liothyronine) is not normally followed for this. There are a number of issues, and you would be best discussing this with your doctor. ...Read more

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Person with normal Total T4, T3 (liothyronine) Uptake, FTI, Ultrasensitive TSH but LOW Total T3 (liothyronine) (63.55 ng/dl) = Synthroid dose needs to increase?

Person with 

normal Total T4, T3 (liothyronine) Uptake, FTI, Ultrasensitive TSH 

but 

LOW Total T3 (liothyronine) (63.55 ng/dl) 

= 

Synthroid dose needs to increase?

It's OK: Hi. Your TSH is "normal", but I'd shoot for a value on therapy generally around the 1.0-1.5 range. The total T4, T3 (liothyronine) resin uptake, and FTI are prehistoric tests no one in the thyroid field has used for years. Your body regulates conversion of T4 to T3 (liothyronine), so your T3 (liothyronine) should be just what the body ordered. Your T3 (liothyronine) is close to the normal range; if you repeat it it's likely to be within normal range. ...Read more

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Im 36y/o, ttc>9mos. Tsh =0.9 three yrs ago, now its 2.5. Should i be on a low dose Synthroid (thyroxine) to improve fertility? Been having hair loss & cold intol

Im 36y/o, ttc>9mos. Tsh =0.9 three yrs ago, now its 2.5.  Should i be on a low dose Synthroid (thyroxine) to improve fertility? Been having hair loss & cold intol

TSH 2.5 is normal: A TSH of 2.5 indicates normal thyroid status, assuming that the pituitary is working normally. An evaluation to check this assumption out might be worthwhile at this point. ...Read more

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Hair loss for 18 months in crown area, first due to stress, then perhaps due to very low TSH as a result of Thyroxine dose increase. Iron levels fine. Hair is now finer / softer and continues to shed - will my hair ever go back to how it was ?

Hair loss for 18 months in crown area, first due to stress, then perhaps due to very low TSH as a result of Thyroxine dose increase.  Iron levels fine. Hair is now finer / softer and continues to shed - will my hair ever go back to how it was ?

Wrong assumptions: Iron level not relevant. "Stress" probably not a factor. Very low TSH because of overdosed thyroid probably not part of it. Thin hair on top is very common as women get older. Other meds? Birth control? Menstrual history? Pregnancies? Weight change? When you see a dermatologist be prepared to detail these items. You might be helped by spironolactone or dutasteride. ...Read more

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Is it possible that even though a dose of synthroid worked for me for a while that it now needs to be increased ? I've noticed symptoms coming back

Is it possible that even though a dose of synthroid worked for me for a while that it now needs to be increased ? I've noticed symptoms coming back

Yes: The function of the thyroid gland is not stagnant and can change over time. If you have a return of more symptoms - please advise your medical provider. Take care. ...Read more

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Should i be concerned about 50mg Synthroid levothyroxine) accidental double dose? took about 5hrs apart

Probably not: Typically will not cause toxic effect (assuming you mean 50 micrograms). watch out for chest pain or an arrhythmia. ...Read more

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I think i may have taken too many synthroid...How do I know if I should get medical attention? My regular dose is 100mcg...Im 31 years old...I was switching back and forth between day and night shifts...And i think I am confusing my days and nights...I ju

I think i may have taken too many synthroid...How do I know if I should get medical attention? My regular dose is 100mcg...Im 31 years old...I was switching back and forth between day and night shifts...And i think I am confusing my days and nights...I ju

No. : No. You should be ok. Side effects of too much thyroid include: rapid heartrate, chest pain, fatigue, sweating. It should be temporary.
You really need to make sure that you don't do this again. I suggest using a 7 day pill box to help remind you whether you took the medicine already or not. Best wishes. ...Read more

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When i take 88mcg thyroxine every second day means what is daily dose?

When i take 88mcg thyroxine every second day means what is daily dose?

About 1/2: If you mean you take 88 mcg every other day then your dose is 1/2 the strength or 44 mcg-50 mcg. It depends how many times during the week you take it. ...Read more

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What are the symptoms that your level of Synthroid (thyroxine) is too low?

Fatigue: If your med is not enough, you would have fatigue, ittitable, depression, memory loss, menstrual problems, wt gain. ...Read more

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Should i be concerned about 25mg Synthroid (thyroxine) accidental double dose?

Not really: I do not think so since 25 mcg is very low.I assume you meant 0.025 mg or 25 mcg of synthroid (thyroxine). ...Read more

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When i take 88mcg thyroxine every other day then what will my everyday dose result as?

When i take 88mcg thyroxine every other day then what will my everyday dose result as?

Thyroxine: If you take 88 mcg every other day, then your daily dose is 44 mcg/day. The pill doesn't come in 44 mcg so if we ever need this, we typically just go with the 50 mcg pill daioy instead. ...Read more

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Can i take 25mcg thyroxine dose with 12.5 mcg for 37.5mcg dose achivement or 37.5mcg dose are available. please answer?

Can i take 25mcg thyroxine dose with 12.5 mcg for 37.5mcg dose achivement or 37.5mcg dose are available.
 please answer?

Choices: There are no 37.5 pill but the easiest to do is take half of the 75 mcg pill to get 37.5. ...Read more

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My dr priscribed me 37.5mcg thyroxine dose.i don't want cut 75mcgpill so can i take 75mcg pill every second day for same result?

My dr priscribed me 37.5mcg thyroxine dose.i don't want cut 75mcgpill so can i take 75mcg pill every second day for same result?

Yes: Thyroid hormone has a very long "half-life". It will make no difference taking 75 mcg very other day vs 1/2 pill every day. However, a dose of 37.5 mcg daily is a very small dose for someone in your age group. If 75 mcg was too high a dose, you could be on 50 mcg as the next step down. ...Read more

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Thyroxine 37.5mcg dose are available or not if not then what reason?

Thyroxine 37.5mcg dose are available or not if not then what reason?

Not in USA: Levothyroxine in the usa is available as 25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200, 300 mcg. There is no 37.5 mcg dose available. However, you could take 1/2 of a 75 mcg if you like, or take 75 mcg every other day. The result would be the same. I don't know about the availability is in the uk. ...Read more

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Is 200mcg of thyroxine a high dose (I've had total thyroidectomy)?

Is 200mcg of thyroxine a high dose (I've had total thyroidectomy)?

Thyroxine dose: This dose is average. It depends upon age and body weight. Your doc will monitor Total T4, freeT4, TSH levels to optimize. ...Read more

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TSH=0.04(0.4-4.5mIU/L)FreeT4=1.5(0.8-1.8ng/dL)FreeT3=2.5(2.3-4.2pg/mL). Have Hashimotos disease, on 112mcg Synthroid. why is tsh so low FT3/FT4 normal?

Any symptoms?: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, just one parameter, in this case TSH, slightly out of whack is not a cause for alarm. You may watch and wait. If your clinical situation changes it may warrant repeating the tests.
Wish you good health! ...Read more

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If i'm gaining weight on levoxyl (thyroxine) do I need a lower dose?

If i'm gaining weight on levoxyl (thyroxine) do I need a lower dose?

No: One decides dose by lab tests ;

this is because weight gain/loss due to thousand other issues

so if thyroid lab ok, need to look for other causes of weight issue. ...Read more

Dr. Joseph Mathews
615 doctors shared insights

Synthroid (Definition)

Synthroid is a thyroid ...Read more