Ultima Pharmaceuticals MTren supplies metribolone, also known as methyltrienolone, in a single 10 ml vial at 5 mg per milliliter. The compound appears under both names on labels across manufacturers, referring to the same substance in injectable form.

5 mg/ml Metribolone in a 10 ml Vial from Ultima Pharmaceuticals

Each vial holds 10 ml at 5 mg per ml, a lower concentration than the 10 mg or 15 mg per ml options some labs print on their methyltrienolone vials. The difference sits in the label, not in what the compound is: this version spreads the same substance across more volume per dose. Where another lab's 1 ml at 10 mg delivers that amount in half the injection volume, this formulation doubles the milliliters required to reach the same milligram total. Pack size is one vial, and the form is injection for intramuscular use.

Ultima Pharmaceuticals, a company based in the USA, has produced these since 2022. The vial is the only pack format listed for this product under the MTren name from this manufacturer.