Most energy drinks land between 80 and 200 mg of caffeine per can, while some large cans and “extra strength” options run 250–300 mg or more.

Most brewed Arabica coffee lands around 80–100 mg of caffeine per 8 oz (240 mL), yet the cup in your hand can swing a lot.

One Excedrin Extra Strength tablet has 65 mg of caffeine, so a standard two-tablet dose delivers 130 mg.

A typical 8-oz cup of black tea brewed from one bag lands around 40–70 mg of caffeine, with brew time and water heat driving most of the swing.

Caffeine in drinks ranges from near-zero to 300+ mg per serving, so the label and serving size matter more than the drink’s name.

An 8-oz brewed coffee often has around 95 mg of caffeine; many cups land between 70–165 mg.

One Bayer Back & Body caplet contains 32.5 mg of caffeine, so a standard 2-caplet dose provides 65 mg.

A 12-oz can of Barq’s Root Beer contains 22 mg of caffeine, while Barq’s Zero Sugar Root Beer is caffeine-free.

Most 250 ml energy drinks sit near 80 mg of caffeine, while many 16 oz cans land near 150–200 mg.

A classic 12-oz serving of AriZona Green Tea has about 8–10 mg of caffeine, so the “Big Can” is still a light-caffeine drink.