Synthroid (Levothyroxine Sodium T4)  Profile - Buy Synthroid (Levothyroxine Sodium)  online

Levothyroxine or L-thyroxine (brand names Synthroid, Levothroid, Levoxyl) is a synthetic form of thyroxine (thyroid hormone). Levothyroxine is a replacement for a hormone that is normally produced by your thyroid gland to regulate the body's energy and metabolism. Levothyroxine is given when the thyroid does not produce enough of this hormone on its own. Levothyroxine is used to replace the hormone that is normally produced by the thyroid gland for a condition known as hypothyroidism. Synthroid is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.

Background

In the early 1900's doctors found that injecting patients with thyroid extracts from sheep reversed the symptoms of hypothyroidism. T4 was synthesized in 1926. Thyroid drugs are only available with a physician's prescription and are sold in tablet form. The most commonly used T4 thyroid hormone is levothyroxine which is sold under the brand names: Synthroid, Levoxyl, and Levothroid.

Synthroid T4 (Levothyroxine Sodium) Weight loss drug uses, Dosage

Thyroid hormone controls the rate of metabolism. When the thyroid is under active, all body processes slow down and symptoms such as weight gain, fatigue, and decreased body temperature are experienced. Through supplementation of thyroid hormones, basal metabolic rate will be increased.
Thyroid hormones are essential to proper development of all cells in body. These hormones allow for the body to become more sensitive to all other hormones, in turn making them more effective. Thyroid hormones also regulate macronutrient (protein, fat and carbohydrate) metabolism, therefore increasing protein synthesis and ultimately energy. This allows for the body to burn more calories and use them more sufficiently. For this reason, thyroid hormones are commonly used as fat-loss drugs.
T4 must be used in much higher doses to be as effective as T3. Subjects found they needed to use a dosage of 300 mcg/day to achieve the same results as 25-100 mcg/day of T3 (Cytomel).

Synthroid T4 (Levothyroxine Sodium) Side Effects

Although side effects from Levothyroxine are not common, they can occur. Tell your doctor if any of these symptoms are severe or do not go away:

    * weight loss              * tremor
    * headache                 * upset stomach
    * upset stomach            * vomiting
    * diarrhea                 * stomach cramps
    * nervousness              * irritability
    * insomnia                 * excessive sweating
    * increased appetite       * fever
    * sensitivity to heat                           * changes in menstrual cycle  
    * temporary hair loss, particularly in children during the first month of therapy

If you experience either of the following symptoms, call your doctor immediately:

    * chest pain (angina)
    * rapid or irregular heartbeat or pulse                    

User Notes:

Recently though, due mostly to an article written by myself and Dr.James Daemon, T4 has been experiencing a bit of a renaissance. This is due to it being a bit more muscle sparing, and synergy with growth hormone. Most bodybuilders use use GH for precontest dieting, and T4 has found a bit of a niche for those using GH and dieting. At this point, whether on a diet or not, T4 has become a much sought after drug for use with cutting cycles which include Growth hormone. I have even
received a phone call from doctors and Hormone Replacement Clinics, who wanted more practical information on the use of GH + T4.
So, at this point, I think that most of the people in the bodybuilding world who are using T4 are using it along with their Growth Hormone for the most part.
Anecdotally, many bodybuilders feel that T4 is less harsh on muscle tissue and they’re able to maintain more muscle when dieting down by using T4, than compared with when they’ve used T3.