Primary Digest By Vinco's 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.

Papain is a proteolytic enzyme that is extracted from the papaya fruit. It is also known as papaya proteinase. Proteolytic enzymes are enzymes that break down proteins into smaller peptides and amino acids. Papain specifically breaks down proteins by hydrolyzing the peptide bonds that link amino acids together. Papain is used in a variety of applications, including food production, medicine, and biotechnology. Medically, papain can be used to remove dead tissue from wounds and to treat certain skin conditions. It has also been used to treat sports injuries, such as sprains and strains. Additionally, it is a common ingredient in digestive enzyme dietary supplements to aid in the digestion of proteins.