Theobromine from source

C7H8N4O2 · 180.16 g/mol

3,7-Dimethylxanthine · Diurobromine · Theosalvose · Santheose

chemical compound

CategoryPlant

TypeStimulant Methylxanthine

LeaderboardsBiggest Deadliest

Fig. 1 · 2D structure RDKit

CN1C=NC2=C1C(=O)NC(=O)N2C

Where you'll find it

Chocolate~150 to 250 mg per serving of dark chocolatewhat else is in it →Cocoawhat else is in it →

Curated by MoleculeFinder from source

Still in your system computed

Theobromine clears on a half-life of 7.2 h. Every 7.2 hours, half of what's left is gone. Put in what you had:

servings (200 mg)1hours ago0 h

200 mg left

100% of your 200 mg remains

The dose makes the poison inferred

A reported dog oral LD50 for Theobromine is 300 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:

your weight154 lb

21.0 g ≈ 105 servings

a median lethal dose scaled to 154 lb (21,000 mg)

“The dose makes the poison” is a cross-species estimate shown as neutral science, not a threshold anyone should act on. Real toxicity depends on the person, not body mass alone.

Signature properties

Half-life7.2 hfrom source

Toxicity & hazards

Toxicity · LD50

300 mg/kg · moderately toxic · LD50 dog oral from source

The dose lens above scales this to a body weight.

DangerIrritantHealth hazardH302, H319, H341, H351, H360, H370from source

Keep roaming

Where Theobromine leads

Found infrom source

Morning coffeeeveryday world Chocolateeveryday world

Affectsinferred

Adenosinereceptor antagonist

Theobromine is caffeine's gentler cousin and the molecule that gives chocolate its lift. Named for the cacao tree (Theobroma, food of the gods), it clears the body more slowly than caffeine, and the dose in dark chocolate is enough to poison a dog.