I again hadn't paid close enough attention. "Contra-indicated" would be used when any medication
might cause serious side effects based on patient's other problems. For instance, many drugs must
not be given to pregnant women. Patients with problems with blood clotting would not be given
aspirin. Alcohol can dangerously potentiate many medications. Lots and lots of contraindications.
I can't think of any other compound of "indication".