FREQUENTLY ASKED QUESTIONS ABOUT
GLUTATHIONE RAPID BOOST®+ GRB®+

Answers to common questions about GRB®+.

What is the daily suggested use for GRB®+?

When you need an additional boost of energy, focus, endurance and overall immune support simply combine 1 level scoop of GRB®+ to 12-16 ounces of water. Mix well, drink and enjoy!

What are the main ingredients in GRB®+?

RKMD Glutathione Sports Drink ingredients

N-Acetyl Cysteine (NAC) - an amino acid essential to the cellular production of the body's most important antioxidant: Glutathione.

L-Citrulline - a natural nitric oxide precursor that supports improved physical and mental performance.

Taurine - an amino acid that helps maintain proper hydration and electrolyte balance, regulates immune system health and maximizes antioxidant function.

L-Theanine - an amino acid naturally found in green tea. Supports improved memory and mood.

Theobromine - supports improved athletic endurance. Has a mild stimulating effect similar to caffeine but without the negative side effects because it does not affect the central nervous system. This beneficial alkaloid is found in tea and dark chocolate.

Vitamin C - an antioxidant vital to the transport of NAC into the cells.

Vitamin B-12 - boosts mood, energy, concentration and immune system function.

Quercetin - is a powerful antioxidant, neutralizing free radicals that cause cellular & DNA damage.

Milk Thistle - functions as an antioxidant and liver detoxification agent.

L-Theanine - is an amino acid naturally found in green tea that supports improved memory and mood.

Theobromine - is a beneficial alkaloid found in tea and dark chocolate that supports improved athletic endurance. Has a mild stimulating effect similar toaffeine but without the negative side effects because it does not affect the central nervous system.

What is the difference between GRB®+ and OGF®?

GRB®+ was designed as an enhancement to OGF®. For optimal health benefits, take OGF® daily. Drink GRB®+ when you need an additional boost of energy, focus, immunity or endurance.

Can I take GRB®+ every day with my 6 OGF® capsules?

Yes, we suggest your take OGF® every morning, then have GRB®+ as a pre/post workout drink, for an energy boost when you’re tired, or to boost your immune system when you feel run-down.

What is Nitric Oxide and how does it help my body with Glutathione?

In the body, the amino acid arginine changes into nitric oxide (NO). Nitric oxide is a powerful neurotransmitter that helps blood vessels relax and also improves circulation. Some evidence shows that arginine may help improve blood flow in the arteries of the heart.

What is Glutathione?

Glutathione is a super antioxidant and antitoxin. Increasing Glutathione helps to boost your immune system, promote anti-aging and improve cellular function.

What is L-Citrulline?

L-Citrulline is a natural nitric oxide precursor that supports improved physical and mental performance.

What should I expect to feel?

GRB®+ provides a steady release of energy and is a great alternative to high sugar, caffeinated energy drinks that can make you feel jittery and result in an energy crash. When you drink GRB®+ you will feel more alert and more focused. You will experience improved mental and physical performance, and you will benefit from the immune boosting ingredients.

Does GRB®+ contain caffeine?

No, GRB®+ is caffeine-free.

Does GRB®+ contain sugar?

No, GRB®+ is sugar-free. It has a fruit punch flavor and is naturally sweetened with Stevia.

Why should I drink GRB®+ instead of sports and energy drinks?

GRB®+ is a healthy alternative to sports and energy drinks. GRB®+ provides a boost of energy, focus and immunity and increases endurance. Unlike typical energy drinks that rely on stimulants like caffeine and sugar, GRB®+ provides a natural energy boost without caffeine and the sugar crash. GRB®+ contains scientifically proven ingredients that support overall health and energy production, making it a healthier choice for sustained energy.

Can I take GRB®+ at night?

GRB®+ does provide a natural boost of energy. To get a good night's sleep, we suggest drinking GRB®+ in the morning or afternoon.

Can I mix my GRB®+ in the morning and drink it in the afternoon?

Yes! And, like many other drink mixes, GRB®+ tastes best chilled or mixed with cold water.

Does GRB®+ contain electrolytes?

GRB®+ does not contain any electrolytes. However, GRB®+ does contain taurine, a powerful electrolyte balancer that helps your body regulate how and when electrolytes are used.

Why was GRB®+ changed from individual serving packets to a jar?

We have doubled the number of servings per container to 30, added taurine and reduced the cost per serving.

Can GRB®+ be taken with other supplements?

Dr. Keller formulated all RKMD supplements to work synergistically. So when taken together, they provide increased health benefits. When adding a new supplement to your daily regimen, it is suggested that you check with your healthcare provider.

How should GRB®+ be stored?

The recommendation is to store GRB®+ in a cool, dry place where it can avoid moisture and oxidation from light and heat.

Is GRB®+ tested for quality and purity?

All RobKellerMD™ products are manufactured and prepared in the USA by a GMP certified facility in strict conformance with industry and governmental standards. Purity and potency guaranteed. The products have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure or prevent any disease.

This product has been manufactured and prepared in the USA by a GMP certified facility in strict conformance with industry and governmental standards. Purity and potency guaranteed. The statements on this page have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.