Hi! How much colloidal silver to take is an individual decision. A good suggestion that I've seen is to let your body tell you how much you need. Say I take a tablespoon of c.s. and I find that an arthritis pain in my elbow has left - that is an indication of silver working for you, sometime, it is the absence of pain.
Then I might feel that a tablespoon of silver per day is good for my body. If say I still have pain in my knees than I may decide to take a second dose in the afternoon. Possibly the same size dose but two times a day. I personally take from between two to three tablespoons per day, usually in the morning. ~~~Nancy