Prescription compounding improves peoples' health, by making medicine easier to take. Compounding allows specially trained pharmacists to "custom make" medications for an individual patient (human or animal), based on that patient's unique needs and symptoms. 
A compounding pharmacist uses raw chemicals, powders, liquids and special equipment to make medications. This results in a customized medication made by a pharmacist, according to a doctor's directions, to meet an individual patient need.
Compounding is fundamental to the profession of pharmacy, and pharmacists are the only health care professionals that have studied chemical compatibilities and who can prepare alternate dosage forms.