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Doctor insights on: Levothyroxine Sodium Side Effects

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Dr. Rex Mahnensmith
2,055 doctors shared insights

Sodium (Definition)

It's an element that is important in the cell functions ...Read more


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Levothyroxine overdose side effects?

Levothyroxine overdose side effects?

Hyperthroidism: Taking too much levothyroxine causes hyperthyroidism. This can cause your metabolism to be too fast, causing you to lose weight, have a fast heart rate, lose your hair, and feel like it is too hot all of the time. It is definitely not recommended you take too much of your medication. ...Read more

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What are some of the side effects to taking levothyroxine for hypothiroidism?

What are some of the side effects to taking levothyroxine for hypothiroidism?

Safe drug: In general, this is a very safe drug if used properly and as prescribed. The most common side effect is a rash due to the dye in the medication. If too much is used, it can cause palpitations, fast heart beats, nervousness, tremor, diarrhea, insomnia, abdominal cramps... ...Read more

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How can I find out if I have Addison's disease? Or maybe my symptoms are side effects of levothyroxine?

How can I find out if I have Addison's disease? Or maybe my symptoms are side effects of levothyroxine?

Cortisol: Assessment for adrenal insufficiency involves measurement of blood level of cortisol, and confirming a reduced response of the adrenal gland to produce cortisol after administration of an IV dose of ACTH (cosyntropin). ...Read more

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I'm taking 200mcg of Thyroxine Sodium daily for the past 12 years.If I switch to 200mcg of Levothyroxine Sodium instead, What will be the side effect?

I'm taking 200mcg of Thyroxine Sodium daily for the past 12 years.If I switch to 200mcg of Levothyroxine Sodium instead, What will be the side effect?

Same thing: Hi. The only thyroxine sold as pure thyroxine is levothyroxine, so you should be fine. In other words, what was labeled as thyroxine was actually levothyroxine. After you make this switch, have your TSH and free T4 checked about 8 weeks later to assure biological similarity of the two different l-thyroxine preparations. Good luck! ...Read more

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Was just put on levothyroxine for my thyroid. Are there any side effects to this and are there any pre cautions I should take? Nervous abt taking it

Was just put on levothyroxine for my thyroid. Are there any side effects to this and are there any pre cautions I should take? Nervous abt taking it

Hypothyroidism: Please take levothyroxin early in the morning in empty stomach. You need to check the TSH level within 4- 6 weeks and then every 2-3 months depends on your blood level. ...Read more

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Hey i am a mother of a 6month old with hypothyroidism and i just wanted a second opinion on things.my son just started 0.088 mg levothyroxine.ive read some bad side effects on them im just really worried.

Hey i am a mother of a 6month old with hypothyroidism and i just wanted a second opinion on things.my son just started 0.088 mg levothyroxine.ive read some bad side effects on them im just really worried.

Continue medication: Congenital Hypothyroidism is a lack of the thyroid hormone which is what Levothyroxine provides. All medications have benefits and side effects. Without the treatment your infant will not have normal brain growth and development leading to profound mental retardation. In addition there will be significant impairment in his growth. Delayed treatment can even lead to neurological problems. ...Read more

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Bw revealed TSH 5.89. Put on 25mcg levothyroxine 60 days ago. Having heart palps, lost few lbs when BMI only 17.5. Concerned. Why these side effects?

Call your doctor: Your TSH needs treated, as its elevated but sounds like your having symptoms of too high of a replacement dose -----see your doctor and have your TSH rechecked to be sure. ...Read more

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Could I take Levothyroxine sodium 50mcg while being on birthcontrol? What will be the affects? How should take them? I'm only 17 and 85 pounds.

Could I take Levothyroxine sodium 50mcg while being on birthcontrol? What will be the affects? How should take them? I'm only 17 and 85 pounds.

17 & 85 - age 17: No you cannot take Levothyroxine unless your doctor has documented that your thyroid levels are low. If you are on birth control please be very careful. You have mentioned your weight but not your height. You need to make sure that is OK! ...Read more

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If your allergic to the ingredient levothyroxine sodium what are other options?

If your allergic to  the ingredient levothyroxine sodium what are other options?

Levothyroxine: Not sure what you define as allergy to levothyroxine, this is a very unlikely allergy to occur as levothyroxine isa hormone naturally present within us. There are other options that your doctor can discuss with you, but i would verify the allergy part first. ...Read more

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I'm taking levothyroxine sodium 125 mcg per day, what supplement can I take to lose weight? I eat healty & exer. I weight 194.Im 47yr. Old,

I'm taking levothyroxine sodium 125 mcg per day, what supplement can I take to lose weight? I eat healty & exer. I weight 194.Im 47yr. Old,

No easy answer: As long as your thyroid level is normal, this is not the reason for your weight problem. Although supplements are a multi-billion dollar industry, there are very few if any legitimate studies that show that they work. You should get a full examination to make sure there are no other reasons for your weight problem, after that it comes down to the basic reality of fewer calories in, more exercise. ...Read more

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Can i take tetracycline hydrochloride while i'm on 25mcg levothyroxine sodium?

Sure: However, make sure your levothyroxine is brand name, as the generics are cheap, but unreliable. ...Read more

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Is there any interactions between "Schiff Move Free Advanced" and "Levothyroxine Sodium" ? Is it ok to use them simultaneously?

Is there any interactions between "Schiff Move Free Advanced" and "Levothyroxine Sodium" ? 
Is it ok to use  them simultaneously?

Drug interaction: Glucosamine is not one of the agent reported to have any interaction with levothytoxine, but any calcium or iron in it may interfere with the absorption of the thyroid medicine, Take the levothyroxine in the morning in empty stomach and take any other supplements 4 hrs later. ...Read more

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Thyroxine sodium vs levothyroxine. Which one is more effective?

Thyroxine sodium vs levothyroxine. Which one is more effective?

Stick with one: Thyroxine sodium and levothyroxine are simply different forms of generic "synthroid". Neither is better than the other. Whichever form you take, stick with it. The bioavailability of each thyroid preparation is a little different. If you switch from one form to another, your thyroid numbers may change, and you may start to feel hypo or hyper. Sometimes pharmacists switch you to save $. ...Read more

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Levothyroxine sodium for hypothyroidism. How long before the weight starts to come off?

Response will vary: Weight loss does not necessarily come when treated with thyroid replacement for hypothyroidism or for any other reason. The medication takes time to work and may require dose adjustment to get the correct dose. Weight loss may or may not accompany proper treatment. ...Read more

Dr. David Sneid
1,407 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more


Levothyroxine (Definition)

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