Pharmacom Labs lists Meltos 40 among the few non-hormonal items in a catalogue otherwise built from oils and orals: 100 tablets, 40 mcg of clenbuterol hydrochloride in each.
The active is a beta-2 adrenergic agonist developed for airway smooth muscle, and its most distinctive pharmacological trait is how slowly it clears. Elimination is measured in tens of hours, far longer than caffeine or ephedrine-type stimulants, so levels build rather than spike and fade. It touches no androgen receptor, which keeps the estrogen and suppression questions that follow steroid use out of the picture entirely.
