Xeno Laboratories HMG 75 IU Menotropin Lyophilized Vial

HMG stands for human menopausal gonadotropin and menotropin is the international nonproprietary name for the same preparation, sold clinically under names such as Repronex. It is extracted from the urine of postmenopausal women, who excrete high levels of gonadotropins, and it contains both follicle stimulating hormone and luteinising hormone activity. A classic vial is standardised at 75 IU of each activity.

HCG is a single glycoprotein hormone that mimics luteinising hormone and therefore drives Leydig cells in the testis. HMG carries follicle stimulating hormone activity as well, so it also acts on the cell line responsible for sperm maturation in men and on follicle development in women. In practice the two are complementary rather than interchangeable, and reference material describes them being read together for that reason.

Because menotropin is a biologically standardised glycoprotein mixture, not a single pure molecule, its potency cannot be expressed as a mass. The international unit defines the biological effect of a preparation against a reference standard, which is why vials are labelled 75 IU and why a half-life figure is not quoted in the sources: a number would describe a mixture whose components clear at different rates, and no such value was confirmed.

Bacteriostatic water is added down the wall of the vial and the contents are swirled, never shaken, because the active material is a protein and foaming denatures it. Since the vial is standardised in units, the resulting unit value per millilitre is whatever the chosen diluent volume makes it: units divided by millilitres. The powder is kept cold and dry, and the mixed solution belongs in a 2 to 8 C refrigerator, though the manufacturer does not state a stability window for this presentation.

Yes. Gonadotropins including menotropin are listed by WADA in class S2.2.1 and are prohibited in male athletes at all times, in and out of competition. That status is a regulatory fact about the substance class and has nothing to do with whether a given vial is a medicine or a laboratory material. Anyone subject to anti-doping testing should treat the current edition of the Prohibited List as the only authority.

This 75 IU vial is listed as research material with international checkout and a U.S. domestic option. Orders are handled within one to two business days and every batch ships with an HPLC report and a Certificate of Analysis. Stock, variant and the current price are shown in the product block above; at the time of checking, the listing carried an out of stock marker while packs are restocked, so confirm the stock line before ordering.