Alpha-GPC By BulkSupplements.com Overview & Drug Interactions

Alpha-GPC (alpha-glycerylphosphorylcholine) is a natural compound found in small amounts in foods such as soy lecithin, and is also available as a dietary supplement. It is a source of choline, a nutrient that is important for brain health and function. Alpha-GPC is particularly known for its potential to improve cognitive function, particularly in the areas of memory and learning. It is also being studied for its potential to improve symptoms of Alzheimer's disease and other forms of dementia. Alpha-GPC is likely better absorbed and utilized in the body than other sources of choline as it is known to cross the blood-brain barrier. The choline provided from Alpha-GPC is also a precursor to acetylcholine, an important neurotransmitter for cognitive functions such as attention, memory, and learning.

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.