120 mg of caffeine is a moderate dose, roughly the amount in a standard 8-ounce cup of brewed coffee or a single shot of espresso.

100 mg of caffeine is a moderate dose — roughly one 8-oz cup of brewed coffee or two 12-oz cans of cola — well within the FDA’s 400 mg daily limit.

For most healthy adults, up to 400 mg of caffeine per day—roughly two to three 12-ounce cups of coffee—is generally considered safe and not.

Caffeine can raise cortisol levels by roughly 30 to 50 percent above baseline, with the strongest effects seen in people who don’t consume it.

A 16-ounce (grande) Starbucks hot chocolate contains about 25 mg of caffeine, a small amount that comes from the cocoa in the mocha sauce.

A grande (16 fl oz) Starbucks Cold Brew contains 205 mg of caffeine — more than iced coffee (165 mg) but less than a venti (310 mg).

Mushroom coffee typically contains about half the caffeine of regular coffee, averaging 45–50 mg per 8-ounce cup compared to roughly 96 mg.

For most healthy adults, up to 400 mg of caffeine (about 4 cups of coffee) is generally safe, though individual limits vary by weight and sensitivity.

A standard 8-ounce cup of Yorkshire Tea contains between 40 and 60 mg of caffeine, about half the amount in brewed coffee.

An 8-ounce cup of yerba mate contains about 70–85 mg of caffeine, comparable to coffee and higher than most teas.