Dragon Pharma's entry in the water-based category is named for precisely what it holds. Suspension 100 carries unesterified testosterone at 100 mg per millilitre in a 10 ml vial, the crystals held in an aqueous carrier instead of the oil used for ester products.
A suspension settles on standing and has to be re-dispersed before use, and a wider needle is normally wanted to draw it. What is gained is immediacy: nothing has to be enzymatically removed before the hormone is active, so onset is fast and duration correspondingly brief. The vial allows repeated withdrawals from one stoppered bottle.
