Levothyroxine, also L-thyroxine, synthetic T4, or 3,5,3',5'-tetraiodo-L-thyronine, is a synthetic form of thyroxine (thyroid hormone). The natural hormone is chemically in the L-form, as is the pharmaceutical agent. Dextrothyroxine (D-thyroxine) briefly saw research as an anticholesterol agent but was pulled due to cardiac side-effects.
The EU has recently[when?] standardized the use of the International Nonproprietary Name "levothyroxine" for the drug. Common brand names include Thyrax, Euthyrox, Levaxin, L-thyroxine and Eltroxin in Europe; Thyrox in South Asia; Eutirox, Levoxyl and Synthroid in North America.
| Levothyroxine Sodium Dosages & Strengths | ||||
|---|---|---|---|---|
| Strength | Format | Route | Strength | Class |
| Levothyroxine Sodium 137 mcg (0.137 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 50 mcg (0.05 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 75 mcg (0.075 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 125 mcg (0.125 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 150 mcg (0.15 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 25 mcg (0.025 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 300 mcg (0.3 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 200 mcg (0.2 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 112 mcg (0.112 mg) | tablet | oral | 1.0 each | OTC |
| Levothyroxine Sodium 88 mcg (0.088 mg) | tablet | oral | 1.0 each | OTC |
Posted by lynnieb 5 months ago
I've been taking a low dose for about 6 weeks now. I'm still tired a lot, which I attribute to the intense dreaming that has filled my nights since I started taking this med. Also, I find myself very depressed sometimes. Does anyone else have these symptoms?
Posted by nolyak3 10 months ago
For the last year and a half I have taken Levothyroxine Sodium 50mg, now increased to 75 mg. I have gained a great deal of weight and developed arthritis in both knees. Some days my knees hurt so bad I can hardly get out of bed. Since my medication was increased to 75mg. I have been itching like crazy. It is not continually, but at times I just go into an itching fit. Please help! Is there any other thyroid medication that works without all the bad side effects?
Posted by reiqah about 1 year ago
I have taken this Levothyroxine ever since I got Thyroid Cancer in 2006. And thank God I am free from cancer now. My main problem now is that, sometime I really don't know what was wrong with me and get confused over my own feeling. I do have cramps, sleep problem, headache, menstruation problem, mood swing, panic attack and always thinking of a negative thing eg like am I going to die. It has been bothering me since than. Please help I just wanna know is this really due to the medication or its really that I am going to die. I am very confused at times when feeling this side effect. =(
Patheon announces first quarter results - FOXBusiness
... as a result of lower volumes of Levothyroxine sodium, where the client suffered a significant decline in market share during the first half of 2007. ...
Fri Mar 07 11:24:19 +0000 2008
Streetinvesting.com: Global Market Progressive Review on Mylan Inc - Trading Markets (press release)
... Mylan Pharmaceuticals Inc. has obtained an order from an administrative law judge in Florida finding that the inclusion of Levothyroxine Sodium on the ...
Fri Feb 08 13:11:52 +0000 2008
Mylan (MYL) to Restore Availability of Generic Levothyroxine in ... - StreetInsider.com (subscription)
Mylan Inc. (NYSE: MYL) has obtained an order from an administrative law judge in Florida finding that the inclusion of Levothyroxine Sodium on the state's ...
Fri Feb 08 08:50:15 +0000 2008
levothyroxine sodium