Levothyroxine, also known as L-thyroxine, is a manufactured form of the thyroid hormone, thyroxine (T4). It is used to treat thyroid hormone deficiency including the severe form known as myxedema coma. It may also be used to treat and prevent certain types of thyroid tumors. It is not indicated for weight loss. Levothyroxine is taken by mouth or given by injection into a vein. Maximum effect from a specific dose can take up to six weeks to occur.
Side effects from excessive doses include weight loss, trouble tolerating heat, sweating, anxiety, trouble sleeping, tremor, and fast heart rate. Use is not recommended in people who have had a recent heart attack. Use during pregnancy has been found to be safe. It is recommended that dosing be based on regular measurements of TSH and T4 levels in the blood. Much of the effect of levothyroxine is following its conversion to triiodothyronine (T3).
L-Thyroxine (Levothyroxine) T4, 51-48-9
Catelog: APIs, pharmaceutical chemicals; thyroid hormone agent
MF: C15H11I4NO4
MW: 776.87
CAS :51-48-9
EINECS 200-101-1
Melting point 223 centigrade (dec.)
Water solubility insoluble
Assay: 98.0%
Package: 100g, 300g, 500g, 1000g/Aluminum foil bag
Appearance: white acicula crystal, scentless, degenerate case of light.
Usage: Pharmaceutical raw materials promote General organization of metabolic, increased nerve excitability and Physical development; cure Hypothyroidism, Myxedema, and Cretinism, etc.
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