Well 50 mg go into a standard Viagra pill. So there are 5000 milligrams in 50 grams. An average Viagra pill uses 50-100 milligrams. So you should be able to get 500 uses from the power you have. In order to separate this into useable portions you will need a very expensive
scale. The easier thing to do is buy capsules that hold 50 milligrams, you can get these at any medical supply store. After you separate you will have 500 capsules.