Free Shipping

20% OFF with WELCOME20

30-Day Money-Back Guarantee

Free Shipping

20% OFF with WELCOME20

30-Day Money-Back Guarantee

Cart

Your cart is currently empty.

Order special instructions

Order note

Estimate shipping

Discount

Discount code

Taxes and shipping calculated at checkout

Shipping FREE

Subtotal

$0.00 USD

Some cookies are essential, while others help us understand how you interact with our site. You can manage your preferences at any time

Search

Shop

Learn

Support

Account

Join the FRISS Team

Be the first to know about new FRISS products, flavors, and exclusive deals and events.

Enter your email

Sources

1Guest NS, VanDusseldorp TA, Nelson MT, et al. International Society of Sports Nutrition position stand: caffeine and exercise performance. J Int Soc Sports Nutr. 2021;18(1):1.
2McLellan TM, Caldwell JA, Lieberman HR. A review of caffeine’s effects on cognitive, physical and occupational performance. Neurosci Biobehav Rev. 2016;71:294-312.
3Sherman SM, Buckley TP, Baena E, Ryan L. Caffeine enhances memory performance in young adults during their non-optimal time of day. Front Psychol. 2016;7:1764.
4Grgic J. Are there non-responders to the ergogenic effects of caffeine ingestion on exercise performance? Nutrients. 2018;10(11):1736.
5Ludwig IA, Mena P, Calani L, Cid C, Del Rio D, Lean MEJ, Crozier A. Variations in caffeine and chlorogenic acid contents of coffees: what are we drinking? Food Funct. 2014;5(8):1718-1726.
6U.S. Food and Drug Administration. Spilling the beans: how much caffeine is too much? Updated August 28, 2024.
7Centers for Disease Control and Prevention. The buzz on energy drinks. Updated July 22, 2024.
8Nehlig A. Interindividual differences in caffeine metabolism and factors driving caffeine consumption. Pharmacol Rev. 2018;70(2):384-411.