Theobromine (from cacao) · supplement
Evidence tier: insufficient
A gentler cousin to caffeine, from cacao. Mood lifting and vasodilating without the jitter or sleep disruption.
A methylxanthine, in the same chemical family as caffeine but weaker at the receptor. Theobromine antagonises adenosine receptors, which is the standard xanthine stimulant mechanism, and inhibits phosphodiesterase, which is the classical explanation for smooth muscle relaxation and the basis for the proposed bronchodilator and vasodilator effects. It has a longer half life than caffeine and lower central potency, which is where the gentler cousin framing comes from. Note that the vasodilator half of this mechanism is contradicted by the one trial that measured whole day blood pressure properly, so it should be reported as a pharmacological property of the molecule, not as a demonstrated benefit in a person.
Insufficient. Theobromine is the xanthine alkaloid that makes cocoa cocoa, and almost everything good ever attributed to it belongs to something else in the bean. The cardiovascular reputation of cocoa is built on its FLAVANOLS, and when theobromine is isolated and tested on its own the results are inconsistent, and in one important case they point the wrong way. The single most relevant trial is van den Bogaard (Hypertension 2010), a randomised double blind crossover study of cocoa with natural or high dose theobromine: two hours after theobromine enriched cocoa, central systolic blood pressure was 4.3 mmHg lower than placebo (p=0.001), but 24 hour ambulatory systolic blood pressure was significantly INCREASED. A supplement that raises your blood pressure over the whole day while lowering one measurement two hours after a dose has not earned a vasodilator claim. Neufingerl (2013, randomised controlled trial, 152 adults, four weeks) found purified theobromine raised HDL cholesterol by 0.16 mmol/L, a real signal but a single lipid marker with no outcome attached. For MOOD, the claim the seed leans on, EFSA assessed cocoa's caffeine and theobromine for enhancement of mood under the Article 13(1) health claims process and the claim was NOT authorised; there is no approved European health claim for theobromine on mood, alertness or anything else. For COUGH, theobromine can inhibit sensory nerve activation in experimental cough models, which is genuinely interesting, but the clinical trials that would test it have not reported results. That is a mechanism looking for an outcome. Nothing here rises above single markers and mechanistic promise. Safety at cocoa food levels is unremarkable and there is no LiverTox chapter, but note that the purified doses used in the trials, 850 to 1,000 mg daily, are several times what the seed suggests and several times what a bar of dark chocolate delivers, and theobromine is a stimulant xanthine with a long half life, which is why it can disturb sleep in sensitive people. Its acute toxicity to dogs and cats is real and is the one safety fact the seed gets exactly right.
Not established. No regulator sets a dose and no trial has established one against an outcome. For reference, the trials that exist used 850 to 1,000 mg daily of purified theobromine over three to four weeks, which is far above the 100 to 300 mg figure in circulation, and at those doses the findings were a single lipid marker moving and 24 hour blood pressure rising. Dietary intake from cocoa and dark chocolate is the only exposure with a long safety record.
100 to 300 mg daily; or via dark chocolate / cacao consumption.
Toxic to dogs and cats, keep away from pets.
Pregnancy: caution
Breastfeeding: caution
Active compounds: theobromine
Remedies using Theobromine · Browse by body system · Check it against what you take
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.