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).
Knowing the type of kidney stone helps determine the cause and may give clues on how to reduce your risk of getting more kidney stones. Types of kidney stones include: 1  Calcium stones. 2  Most kidney stones are calcium stones, usually in the form of calcium oxalate.3  Oxalate is a naturally occurring substance found in food. 4  Some fruits and vegetables, as well as nuts and chocolate, have high oxalate levels.5  Your liver also produces oxalate. Cystine stones. 2  These stones form in people with a hereditary disorder that causes the kidneys to excrete too much of certain amino acids (cystinuria). 3  Other stones. 4  Other, rarer types of kidney stones also can occur.