Pure Leaf Sweet Tea contains 69 mg of caffeine per 18.5 oz bottle (547 ml / 18.5 oz). That is about 73% of the caffeine in a typical 8 oz cup of brewed coffee (about 95 mg). Concentration: 12.6 mg per 100 ml.
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Pure Leaf Sweet Tea Caffeine Content by Serving
| Serving | Volume | Caffeine | Per 100 ml | Level |
|---|---|---|---|---|
| 18.5 oz bottle | 547 ml / 18.5 oz | 69 mg | 12.6 mg | Low |
Source: caffeine figures from Caffeine Informer, accessed 2026-06-11. Values can vary by batch, location, and preparation; check the label or the source for the latest figures.
How Pure Leaf Sweet Tea Compares to Coffee
At 69 mg per 18.5 oz bottle, Pure Leaf Sweet Tea delivers about 73% of the caffeine in a typical 8 oz cup of brewed coffee (about 95 mg). For a wider comparison across drinks, try the caffeine comparison tool or browse the full caffeine database.
When to Stop Drinking Pure Leaf Sweet Tea Before Bed
With caffeine's median 5-hour half-life, an 18.5 oz bottle of Pure Leaf Sweet Tea (69 mg) needs about 2 h 20 min to fall under 50 mg, the level where most people can fall asleep normally. That puts the last call at 7:30 PM (19:30) for a 10 PM bedtime and 8:30 PM (20:30) for an 11 PM bedtime. Individual half-lives range from roughly 2 to 12 hours, so treat these as a starting point.
The Pure Leaf Sweet Tea sleep cutoff page has last-call times for four bedtimes, and the caffeine half-life calculator personalizes the curve to your metabolism.
