Probiotic Acidophilus By Rexall 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.

Lactobacillus acidophilus is a type of lactic acid-producing bacteria that is commonly found in the human gut, as well as in other areas of the body such as the mouth and vagina. L. acidophilus can also be found in fermented foods such as yogurt and kefir. It is commonly utilized in probiotic dietary supplements as it is considered a "friendly" or "beneficial" bacteria because it helps to maintain the balance of microorganisms in the body, and is purported to help improve digestion and boost the immune system. Some studies have suggested that L. acidophilus may also have a role in preventing and treating certain conditions such as diarrhea, vaginal yeast infections, and eczema.