By a rule of thumb, the dosage and frequency of the stem cell infusions are determined by your physical condition (your age, weight and condition of health). If you are older, you may require a higher dosage to slow down the degenerative processes. If you are ill, you may also need a higher dose and more frequent infusions to repair damaged organs (every 6 months to a year). If you are healthy, you may only need a moderate dose and at longer intervals (maybe once in 2-3 years).
It is best to seek the advise of the specialist to determine the best treatment plan for yourself.