Douglas Laboratories Corvalen Chews

by Douglas Laboratories

Douglas Laboratories Corvalen Chews are natural D-ribose chewable tablets clinically proven to help restore energy, support cardiac function and reduce muscle stiffness, soreness, and fatigue.

D-ribose is a natural pentose sugar that is designed for the support of cardiovascular health, fatigue, energy production, and mitochondrial function.*

Douglas Laboratories Corvalen chewable tablets are great tasting with natural orange/vanilla flavoring sweetened with xylitol and readily absorbed into the body.

Corvalen contains pure D-ribose, a safe and clinically researched ingredient that supports the natural way our bodies produce adenosine triphosphate (ATP), the energy currency of the cell.*

Ribose is the vital structural backbone of critical cellular compounds called purines and pyrimidines. Our bodies must have an adequate supply of purines and pyrimidines to form major cellular constituents such as our genetic material (DNA and RNA), numerous cofactors, certain vitamins, and, importantly, adenosine triphosphate (ATP). Ribose is the starting point for the synthesis of these fundamental cellular compounds, and the availability of ribose determines the rate at which they can be made by our cells and tissues.

D-ribose is indicated for sports and fitness activities because it helps to reduce the loss of energy during stress and accelerate energy and tissue/muscle recovery. Endurance athletes and strength training athletes will both benefit from the effects of Douglas Labs Corvalen Chews.

Unless our hearts have an adequate supply of ribose, they simply cannot satisfy their astonishing energy demand. Our bodies make ribose naturally, but in times of stress, the need is greater than our supply to satisfy the loss of energy from our cells. That is why supplementing with d-ribose can support proper heart function and helps maintain healthy stroke volume during and after high-intensity exercise.*

Douglas Laboratories Corvalen Chews are GRAS (generally recognized as safe), a determination that results only after considerable toxicology studies are performed and an expensive and time-consuming FDA process is completed.


Serving Size 1 Chewable Tablet

Amount Per Serving  ...... %DV


Total Carbohydrates …...2 g    <2%

Sugars ……….1.67 g

Sugar Alcohol………0.5 g

D-Rip0Se ............1.67 g

*Daily Value not established

Other Ingredients:

Xylitol, cellulose, hydroxypropyl cellulose, natural orange and vanilla flavors, citric acid, mannitol, vegetable stearate, stearic acid, natural palm wax (Copernicia prunifera), and silica.

Suggested Use:

Usual dosage: Take one chewable tablet one to three times daily with food.
Alternative dosage: 1-3 chewable tablets just before and just after exercise or physical activity.


Mild, transient hypoglycemia may occur if taken on an empty stomach. Insulin-dependent diabetics and pregnant women should consult their physician before use. Ribose may cause a transient increase in uric acid levels; therefore those that have chronic gout should consult their physician before use.

Side Effects:

No adverse effects have been reported.


Store in a cool, dry place, away from direct light. Keep out of reach of children.

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

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