Rev3 Energy Surge Pack By USANA Overview & Drug Interactions

Calcium is a vital nutrient found in various foods such as dairy products, certain vegetables, and many fortified items. Over 99% of the body's calcium is stored in the bones and teeth, predominantly as hydroxyapatite. The remaining calcium circulates in the blood, extracellular fluid, muscles, and other tissues, where it is essential for processes like nerve signaling, muscle contraction, vascular activities, glandular secretion, and maintaining cell membrane and capillary permeability. It also plays critical roles in enzyme reactions, respiration, kidney function, and blood clotting, and is involved in neurotransmitter and hormone release, amino acid uptake, vitamin B12 absorption, and gastrin secretion. Calcium balance changes with age: it is positive during periods of growth, stable in adulthood, and tends to become negative in older age. Calcium loss occurs through feces, urine, sweat, and shedding skin cells. In women, reduced estrogen levels decrease calcium absorption and retention, increase bone turnover, and lead to lower bone mass. Calcium supplements come in various forms, including citrate and carbonate, which differ mainly in their calcium content and absorption rates. Calcium citrate is easily absorbed and can be taken without food, making it suitable for older adults or those with low stomach acid. In contrast, calcium carbonate, which contains a higher percentage of calcium, is best absorbed when taken with meals.

Rhodiola is a type of plant native to the Arctic regions of Europe and Asia. It is also known as "golden root" or "arctic root." The roots and rhizomes of Rhodiola are commonly used in dietary supplements for their purported effects as an 'adaptogen', which are used to improve physical and mental performance, reduce fatigue, and enhance the ability to cope with stress. Rhodiola is believed to work by increasing the production of certain chemicals in the brain (e.g., serotonin, dopamine, and norepinephrine) that are involved in mood and energy regulation. Rhodiola supplements are often standardized to a specific amount of their rosavin and salidroside content.

Malic acid is a naturally occurring organic compound found in various fruits, particularly apples. It contributes to the sour or tart taste of these fruits and is commonly used as a food additive to enhance flavor. In addition to its role in the food industry, malic acid is utilized in the production of beverages, candies, and skincare products for its acidulant properties. Some studies suggest that malic acid may have potential health benefits, such as supporting muscle function and alleviating symptoms of conditions like fibromyalgia.