What is glucagon-like peptide-1 (GLP-1)?
GLP-1 is an endogenous incretin hormone produced by L cells in the terminal ileum and colon after nutrient ingestion. Its main physiological functions are enhancing glucose-dependent insulin secretion, inhibiting glucagon release, delaying gastric emptying, and promoting satiety. In the pharmaceutical field, GLP-1 receptor agonists (GLP-1 RAs), such as liraglutide and semaglutide, are genetically engineered synthetic analogs that resist degradation by dipeptidyl peptidase-4 (DPP-4), significantly prolonging their half-life and increasing their potency compared to the natural hormone.
The "GLP-1 5mg" mentioned in the text almost certainly refers to semaglutide, as this drug is typically administered in milligrams once weekly (e.g., Ozempic/Wegovy). Liraglutide (Saxenda) is also usually administered in milligrams, but requires daily dosing. For the sake of this discussion focused on bodybuilding, we will assume that "GLP-1 5mg" refers to smegglutide taken once weekly.
GLP-1 Raw Material 5mg/bottle
Pure incretin hormone powder, used for fat loss and appetite control. Derived from GLP-1 raw material powder, suitable for extreme fat loss in bodybuilding.
CAS: 97710-41-1 (Natural GLP-1)
EINECS Number: Not Listed (Research Peptide)
Molecular Formula: C152H252N44O47 (Natural GLP-1(7-36)amide)
Molecular Weight: Approximately 3300 Da
Melting Point: >200°C (decomposes; peptides generally do not have a defined melting point).
Appearance: White lyophilized powder
Uses: GLP-1 is a very popular choice, especially for athletes who need to rapidly lose fat and remove stubborn fat during competition preparation. Many competitive bodybuilders incorporate GLP-1 into their pre-competition fat loss programs to maximize fat reduction and control hunger.
GLP-1 Characteristics
The unique properties of GLP-1 receptor agonists make them valuable in both medical and sports fields:
● Chemical Composition: Synthetic GLP-1 agonists, such as semaglutide and liraglutide, are modified versions of the natural hormone designed to resist degradation by dipeptidyl peptidase-4 (DPP-4). This improves their bioavailability and half-life.
● Mechanism of Action: GLP-1 agonists bind to GLP-1 receptors in the pancreas, brain, and gastrointestinal tract, leading to glucose-dependent insulin secretion, decreased appetite, and slowed gastric emptying.
● Anabolic-Catabolistic Balance: While GLP-1 does not directly promote muscle growth, its effects on fat metabolism and insulin sensitivity indirectly support anabolic processes by improving nutrient distribution.
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