Which of the Following Is NOT a Guideline to Medicating

Which of the following is NOT a guideline to medicating yourself safely?

A) Store your medication in a cool,dry place that is out of the reach of children.
B) Do not exceed the recommended dosage or length of treatment unless you discuss it with your physician.
C) Whenever possible,buy brand name products as they contain more effective ingredients.
D) Select medications with one active ingredient rather than an "all in one" product.