Quercetin
This bioflavonoid occurs in many plant foods. Quercitin balances histamine levels and has a synergistic effect with bromelain.
See: Quercetin/Bromelain

RDA
Recommended daily allowance. The amount of a vitamin or other nutrient that should be consumed daily in order to prevent nutritional deficiency, not the amount needed for optimal health.

Retinol
A vitamin with antioxidant properties important for eye protection and bone growth, protein and hormone synthesis, and supporting tissue maintenance. Helps reduce susceptibility to infection. Essential for healthy skin, good blood, strong bones and teeth, kidneys, bladder, lungs and membranes.

Rheumatoid Arthritis
A chronic disease with painful swelling of joints, often leading to deformity.

Riboflavin (Vitamin B-2)
A vitamin which helps with energy production and amino acid production. Helps body obtain energy from protein, carbohydrates, and fats. Helps maintain good vision and healthy skin. See: Vitamin B-2

Rickets
Disease characterized by a softening and often bending of the bones.