FBlock By Absolute Nutrition Overview & Drug Interactions

Chitosan is a biopolymer derived from chitin, a natural substance found in the shells of crustaceans like shrimp and crabs. It is renowned for its versatile properties, including biodegradability and biocompatibility. Due to its positive charge, chitosan is often utilized in various applications such as water treatment, wound healing, drug delivery, and dietary supplements. Its ability to interact with molecules and surfaces makes it valuable in industries ranging from pharmaceuticals to agriculture. Additionally, chitosan is commonly used in dietary supplements for its potential to aid in weight management by binding to dietary fats and potentially reducing their absorption in the digestive system.

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.