Over-the-counter multivitamins are available in drop form for infants. Beginning in the first two months of life, a minimum of 200 IU of vitamin D per day promotes optimal baby development, Greer tells WebMD. This should continue throughout childhood and adolescence.
A kidney stone, also known as a renal calculus or nephrolith, is a solid piece of material which is formed in the kidneys from minerals in urine.Kidney stones typically leave the body in the urine stream, and a small stone may pass without causing symptoms.rinary stones are typically classified by their location in the kidney (nephrolithiasis), ureter (ureterolithiasis), or bladder (cystolithiasis), or by their chemical composition (calcium-containing, struvite, uric acid, or other compounds).
Each one can produce a stone. A kidney stone is a solid mass made up of tiny crystals from the minerals calcium, oxalate and uric acid. Gallstones are hard, pebble-like cholesterol or pigment deposits that form inside the gallbladder. They can be as small as a grain of sand or as large as a golf ball.