T3/Triiodothyronine/3,3,5-Triiodo-L-thyronine 99% White powder C15H12I3NO4 Senwayer

T3 is one of two major hormones made by your thyroid, a small, butterfly-shaped gland located near the throat. The other hormone is called thyroxine (T4.) T3 and T4 work together to regulate how your body uses energy. These hormones also play an important role in controlling your weight, body temperature, muscle strength, and nervous system.

The majority of the triiodothyronine in your body is actually created from Thyroxine through deiodinase enzymes in specific tissues such as the liver and your intestines.

Your thyroid does produce some T3 directly as well from the thyroid gland.

Around 80% of all thyroid hormone created from your thyroid gland (4) comes out as thyroxine which leaves around 20% or so which is produced directly as triiodothyronine.

Your body then takes that 80% of thyroxine which is floating around in the bloodstream and alters the chemical structure of thyroxine to produce triiodothyronine.

T3 then circulates in the bloodstream and enters target cells where it sits on receptors on the outside of the cell as well as the inside.

Thyroid hormone is special in that it interfaces directly with the nucleus of your cells and alters DNA production directly (5).

So in a way T3 is directly altering the production of proteins and enzymes in your cells.

These proteins then go on to improve enzyme function in specific organelles in the cell.

The net result to you is that you have more energy, your body produces more energy, your metabolism is increased and your mood maintains controlled and regulated.

Triiodothyronine has also been shown to directly activate pumps and channels on the outer membrane of the cell (so-called nongenomic effects (6)).

This is the mechanism by which your thyroid uses to help manage heart rate and blood pressure.

1. Since the less T3 one takes, the easier it is to keep T3 levels steady and the less chance there is of side effects, it is best to begin with a small dose in the neighborhood of 15 micrograms per day (7.5 mcg by mouth ever 12 hours).

2. Since the half-life of T3 is short (2 1/2 days), and since side effects may result from T3 levels that are too low, too high, or unsteady, it is critically important that the medication be administered in the right dose and in a steady fashion.

Side effects of taking Triiodothyronine medications include:

Heart palpitations
Jittery sensation
Increased anxiety
Rise in heart rate
Increased body temperature
Increased hair loss
Shortness of breath
These side effects are usually seen when the dose that you are taking is too high and may indicate that you are getting too much hormone.

Triiodothyronine can safely be used as part of a hypothyroidism medication regimen (often used in conjunction with Levothyroxine) as long as it is dosed correctly and monitored correctly.