A rapid glutathione boost anytime you need it!

Just add to your water bottle for a great tasting pre, post or during workout drink. Also a great afternoon energy boost at the office!

Improve performance

Increase Energy

Reduce Brain Fog

Save and additional $10 with monthly auto-ship from RobKellerMD and get $15 off your first bottle – call for details or go to and enter coupon code RKMD-77566 at checkout.

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As an athlete, you need to hydrate with a drink that fuels your body and improves your performance. The ingredients in GRB® formula work in combination with each other to increase Glutathione and activate Nrf2 pathways. GRB® Glutathione Rapid Boost® is a technologically advanced sports drink that can dramatically improve your athletic performance.

Increase Glutathione:

This patented formula increases intra cellular and plasma Glutathione – arguably the most powerful antioxidant. Scientific studies support the many health benefits of maintaining adequate Glutathione levels. However, during exercise, Glutathione is rapidly depleted, which can cause inefficiencies in cell function.

There is a body of scientific evidence that maintaining Glutathione levels will increase the ability of your cells to produce energy, decrease recovery time and assist your cells to perform at an optimal level for a longer time.

Supports improved athletic endurance. Stimulating effect without caffeine.

Shown to  increase exercise capacity and reduce exercise fatigue.

Shown to minimize breakdown of muscle and improve muscle recovery.

Activate Nrf2 Pathways:

GRB™ Glutathione Rapid Boost® has ingredients that activate Nrf2. When Nrf2 is activated it tells your cells to produce Catalase, Superoxide Dismutase (SOD) and Glutathione. During exercise the body naturally produces free radicals.

Activating Nrf2 pathways helps your cells neutralize these free radicals. Eliminating free radicals reduces oxidative stress and inflammation allowing your cells to perform more efficiently.

Usage: We use 1/2 packet in 24 oz of water.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Additional information

Weight 0.25 lbs


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