FYI: Trimix has different strengths as the pharmacist prepares your vial. My pharmacist assigns a number to each concentration. So Trimix #6 is stronger/more potent than Trimix #5. Whereas Trimix #3 is very weak. Alprostadil being the main ingredient, is more potent as the number increases. Example: Trimix #5 has 10mcg of Alpro, where Trimix #6 has 25 mcg. Just be very careful how much you load into your syringe! Start with small amount, then increase gradually till you're satisfied..