Alpha Pharma builds Parabolin around an unusual ampoule size: each of the five glass ampoules holds 1.5 ml carrying 75 mg of trenbolone hexahydrobenzylcarbonate, which works out to 50 mg in a millilitre rather than the 100 mg of most vialled versions.
The substance is a nandrolone-derived androgen with no aromatising activity, tied to a bulky carbonate ester that stretches its release out across roughly a fortnight.
Ampoules also mean no rubber stopper is punctured more than once.