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Green coffee beans carry caffeine in the seed, often near 10–15 mg per gram of bean, with robusta trending higher than arabica.

Plain ibuprofen contains 0 mg caffeine; caffeine appears only in combo products that list it as an active ingredient.

A typical 8-oz mug of brewed black tea lands near 40–60 mg of caffeine, while green tea is usually lower and herbal tea is caffeine-free.

Most hot chocolate lands around 5–25 mg caffeine per mug; brewed coffee often runs 80–140 mg per 8 oz cup.

One packet in an 8-oz mug tends to land near 5 mg caffeine; darker mixes or bigger mugs can push it closer to 10 mg.

Most GT’s kombucha lands in the 8–14 mg caffeine range per serving, so a full bottle can add up based on how many servings it holds.

Most green coffee extract capsules land around 5–40 mg caffeine per serving, yet labels and extracts vary a lot.

Most true herbal teas are caffeine-free; any caffeine comes from added tea leaves, yerba mate, guarana, kola nut, cacao shell, or added caffeine.

Guarana seeds hold 2–8% caffeine by dry weight, so products can land around 20–80 mg of caffeine per gram depending on the form and dose.

Most half-caff coffee lands around 45–75 mg caffeine per 8 oz, depending on the decaf ratio, roast, dose, and brew style.