Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Relative pharmacological potencies of the naturally available methylxanthines ranging from more potent (+++) to less potent (+) (adapted from [24,26,114]).
| Systematic Effect | Caffeine | Theobromine | Theophylline |
|---|---|---|---|
| CNS Stimulation | +++ | + | ++ |
| Respiratory Stimulation | +++ | + | ++ |
| Diuresis | ++ | + | +++ |
| Coronary Dilatation | + | ++ | +++ |
| Cardiac Stimulation | + | ++ | +++ |
| Skeletal Muscle Stimulation | +++ | + | ++ |
| Smooth Muscle Relaxation (Bronchodilation) | + | + | +++ |
