This is a test of commonsense. Complete the next sentence:

How to choose acidophilus
Talk to your doctor about taking acidophilus.
Your doctor will instruct you on how much of the supplement you need. Acidophilus is measured in cfus (colony-forming units) and typically comes in 2 billion cfus per gram.
A typical recommendation for dosage is 1 to 2 billion cfus daily. Children's dosages are based on weight and age of the child.