| Drink | Caffeine | Caffeine/oz |
|---|---|---|
| 8-oz. brewed coffee | 133 mg | 16.625 mg |
| 8-oz. decaf coffee | 5 mg | 0.625 mg |
| 2-oz. Starbucks double espresso | 150 mg | 75.000 mg |
| 12-oz. Diet Coke | 47 mg | 3.916~ mg |
| 8.3-oz. Red Bull | 80 mg | 9.639 mg |
| 8-oz. hot cocoa | 9 mg | 1.125 mg |
| 12-oz. Jolt Cola | 72 mg | 6.000 mg |
| 8-oz. black tea | 53 mg | 6.625 mg |