BUZZ METER

A safe limit for caffeine consumption has never been determined, but some medical experts say 400 mg should be roughly the daily limit for adults. Here’s a sampling of the caffeine dosage in five popular products. 1. Aeroshot caffeine inhalant 100 mg per cartridge, good for 4 to 6 puffs. 2. Starbucks coffee 330 mg in a grande cup (16 oz.) of medium roast, like Pike’s Place 3. 5-Hour Energy shot 215 mg per shot (1.93 oz.)* 4. Red Bull energy drink 164 mg per can (16 oz.) 5. Monster Energy drink 184 mg per can (16 oz.)* *Source: Consumer Reports