Optimal Vitamin C Plus by Seeking Health provides 2,600 mg of vitamin C in a great-tasting effervescent powder. 

• Vitamin C contributes to maintain the normal function of the immune system during and after intense physical exercise
• Vitamin C contributes to normal collagen formation for the normal function of blood vessels
• Vitamin C contributes to normal collagen formation for the normal function of bones
• Vitamin C contributes to normal collagen formation for the normal function of cartilage
• Vitamin C contributes to normal collagen formation for the normal function of gums
• Vitamin C contributes to normal collagen formation for the normal function of skin
• Vitamin C contributes to normal collagen formation for the normal function of teeth
• Vitamin C contributes to normal energy-yielding metabolism
• Vitamin C contributes to normal functioning of the nervous system
• Vitamin C contributes to normal psychological function
• Vitamin C contributes to the normal function of the immune system
• Vitamin C contributes to the reduction of tiredness and fatigue
• Vitamin C contributes to the regeneration of the reduced form of vitamin E
• Vitamin C increases iron absorption
• Magnesium contributes to a reduction of tiredness and fatigue
• Magnesium contributes to normal muscle function
• Magnesium has a role in the process of cell division
• Magnesium contributes to normal psychological function
• Magnesium contributes to normal protein synthesis
• Magnesium contributes to the maintenance of normal bones
• Magnesium contributes to the maintenance of normal teeth
• Magnesium contributes to normal energy-yielding metabolism
• Magnesium contributes to electrolyte balance
• Magnesium contributes to normal functioning of the nervous system
• Calcium is needed for normal growth and development of bone in children.
• Calcium contributes to normal blood clotting
• Calcium contributes to normal energy-yielding metabolism
• Calcium contributes to normal muscle function
• Calcium contributes to normal neurotransmission
• Calcium contributes to the normal function of digestive enzymes
• Calcium has a role in the process of cell division and specialisation
• Calcium is needed for the maintenance of normal bones
• Calcium is needed for the maintenance of normal teeth
• Calcium helps to reduce the loss of bone mineral in post-menopausal women. Low bone mineral density is a risk factor for osteoporotic bone fractures

Optimal Vitamin C Plus features bioflavonoids quercetin and luteolin. These are naturally occurring bioflavonoids found in citrus fruits. Quercetin is also found in red wine and tea. It is sweetened with monk fruit extract, without fructose or other undesirable sweeteners. When added to water, the powder turns into a delicious fizzy drink, making it easy for kids or others with finicky palates to use.