When it is used for treating Asthma the recommendation is from 0.02 milligrams per day to 0.03 milligrams. It can be taken as a pill or in the form of an inhaler. \r \rWhen people use to improve their physical performance or for weight loss can be bought as a pill, as an injection or as a liquid. Usually, people take from 0.06 milligrams per day to 0.12 milligrams. Read more