Theophylline from source

C7H8N4O2 · 180.16 g/mol

1,3-Dimethylxanthine · Elixophyllin · Theophyllin · Theolair

chemical compound

CategoryPlant

TypeMethylxanthine Stimulant

LeaderboardsBiggest Deadliest

Fig. 1 · 2D structure RDKit

CN1C2=C(C(=O)N(C1=O)C)NC=N2

Where you'll find it

Teatrace amountswhat else is in it →

Curated by MoleculeFinder from source

Still in your system computed

Theophylline clears on a half-life of 8 h. Every 8 hours, half of what's left is gone. Put in what you had:

servings (300 mg)1hours ago0 h

300 mg left

100% of your 300 mg remains

The dose makes the poison inferred

A reported mouse oral LD50 for Theophylline is 332 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:

your weight154 lb

23.2 g ≈ 77 servings

a median lethal dose scaled to 154 lb (23,240 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-life8 hfrom source

Toxicity & hazards

Toxicity · LD50

332 mg/kg · low toxicity · LD50 mouse oral from source

The dose lens above scales this to a body weight.

3 more reported values

136 mg/kgLD50 · iv · mouse
180 mg/kgLD50 · other · mouse
271 mg/kgLD50 · other · mouse

DangerToxicIrritantHealth hazardH301, H302, H360, H361, H362, H370, H372, H402from source

Keep roaming

Where Theophylline leads

Found infrom source

Morning coffeeeveryday world

Affectsinferred

Adenosinereceptor antagonist

Relatedcomputed

Caffeine46% similar

Theophylline is the third of the three dietary methylxanthines, found in trace amounts in tea and used as a drug to open the airways. It shares caffeine's chemistry but lingers longer in the body.