When talking about peptides with people the common theme I hear is I'm on 10 units or I'm on 12 and a half units. The problem is the units do not matter . The reason is because it all depends on the amount of peptide in milligrams and how much BAC water is used. In the example below you'll see 10 mg using 1 ml of BAC water to get 1 mg is 10 units . But if you double the BAC water and use two milliliters now to get that same 1 mg you need 20 units. Hope this helps let me know if you have any questions ..