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).
Kidney stones come in a variety of mineral types, including the most common type â calcium stones. The other mineral types of kidney stone are struvite, uric acid and cystine.Calcium stones are composed of both calcium and oxalate. Many people who form calcium-containing stones have too much calcium in their urine, a condition known as hypercalciuria. There are several reasons why hypercalciuria may occur.he other mineral types of kidney stone are struvite, uric acid and cystine. Calcium stones are composed of both calcium and oxalate. Many people who form calcium-containing stones have too much calcium in their urine, a condition known as hypercalciuria.