Guarana: Guarana also has caffeine like effects. What are you looking for? Caffeine is ok in moderation; stick with green or black tea or coffee.
Answered 2/21/2016
1.6k views
4 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question