Pinnacle Peptides is a trusted supplier of T4 for all your research ventures. It is also called as L-Thyroxine and it is an iodine containing peptide hormone that is produced from thyroglobulin in the thyroid follicular cells. It stimulates the body metabolic rate and also promotes the growth and development of the human body. For the production of T3 and T4, Iodine is essential. When there is a deficiency of Iodine, it leads to decreased production of T3 and T4, which in turn causes the disease called goiter. The functions of this peptide hormone includes activities like increase in basal metabolic rate, affecting protein synthesis, regulate bone growth, proper development and differentiation of all cells, regulate protein, fat, and carbohydrate and vitamin metabolism etc. It also leads to heat generation in humans. Don’t settle for anything less than 99% pure peptides. With Pinnacle Peptides, you’re always ensured of the highest quality T4 at all times. Due to all these applicat