One of the most effective means of promoting rapid fat loss is activation (agonism) of beta-adrenergic receptors. Beta receptor activation increases lipolysis and metabolic rate, and can decrease appetite. All these work to improve fat loss.
Prior to changes in the law, the most widely used means of doing this had been with ephedrine. The most hardcore way has been with clenbuterol. Perhaps the best way, for most, is with Salbutamol.
The same dosing levels can also be effective for fat loss, for maintenance of muscle during fat loss, and often for significant increase in endurance performance and/or slight increase in strength.
Medically, Salbutamol is used to improve breathing of asthmatics and patients with chronic obstructive pulmonary disease. Safe initial dosing is typically 2-4 mg taken three to four times per day. (Higher dosings are needed only with time, as downregulation occurs.)
Another positive effect of beta receptor activation is improvement in blood lipid profile. Salbutamol can provide a significant benefit in this regard.
If having no experience with Salbutamol, a usually-suitable starting dose is 4 mg on arising, 2 mg about 4-6 hours later only if feeling ready for it, and another 2 mg four to six hours after that, again only if feeling ready for it. If at the end of the day it seems dosing should have been a little more, the next day, dosing can be increased, until total dosing for the day reaches about 16 mg. This is assuming that ketotifen or Benadryl are being taken as well, as is highly preferable.
Optionally, Salbutamol dosing can be twice per day, with the second dose in the early afternoon. This may be preferred if having trouble with sleep.
Caffeine at about 200 mg about three times per day will considerably improve Salbutamol’s fat loss effect, and is highly recommended.
Taurine supplementation, for example 3-5 g/day, generally solves any muscle pump problem and almost certainly addresses any problem of loss. Potassium supplementation is probably unnecessary when consuming a diet with ample fruits and vegetables, but is advisable where these are lacking. A simple way to supplement potassium is to use Lite Salt in moderate amounts.