Performance
Theobromine
Also known as: 3,7-dimethylxanthine, xantheose
Theobromine is a naturally occurring alkaloid found in cacao and tea with stimulant and mild thermogenic properties. It has a slower onset and longer duration than caffeine, with modest evidence supporting its use for energy and fat oxidation in pre-workout contexts.
Primary uses
- energy
- mental focus
- thermogenesis
- fat oxidation
How it works
- phosphodiesterase inhibition leading to increased cAMP
- adenosine receptor antagonism (weaker than caffeine)
- sympathomimetic stimulation
- mild bronchodilation
Dosage
- Typical range
- 200-400 mg daily
- Timing
- 30-60 minutes before activity or as part of pre-workout formula
- With food
- can be taken with or without food; fat content may slightly slow absorption
- Duration
- longer half-life than caffeine (5-10 hours); effects build over repeated doses
- Special populations
- Sensitive individuals may prefer lower doses (100-150 mg); pregnant/nursing women should minimize use
Safety
Common side effects
- jitteriness at higher doses
- insomnia or sleep disruption if taken late in day
- mild anxiety
- headache upon withdrawal
Contraindications
- uncontrolled hypertension
- severe arrhythmias
- hypersensitivity to xanthine alkaloids
- pregnancy/nursing (at high doses)
- uncontrolled anxiety disorders
Evidence notes
Theobromine has moderate human evidence from controlled trials showing modest improvements in energy, cognition, and fat oxidation. It is less potent than caffeine but has a distinct pharmacological profile. Well-established safety profile supports B grade; not A due to smaller evidence base compared to caffeine.
Grade B: Some human trials support key claims; further confirmation needed.
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