Hibiscus (usually mixed with raspberry and other fruits/berries) and peppermint are also great caffeine-free alternatives. Chaga is another interesting tea. It

Hibiscus (usually mixed with raspberry and other fruits/berries) and peppermint are also great caffeine-free alternatives. Chaga is another interesting tea. It's a mushroom that has been found to have antiinflammatory properites and is supposed to boost your immune system. (You can also get capsules.) Whether it works or not, I don't know, but as a tea it's not bad.