These drugs target bacteria; they cannot kill the viruses that cause colds.

The development of antibiotic resistance in particular stems from the drugs targeting only specific bacterial proteins.

Some drugs indirectly target testosterone as a way of treating certain conditions.

Antiviral drugs directly target the viruses responsible for influenza infections.

Other drugs in the works specifically target histamine.

Other antiviral drugs target different stages of the viral life cycle.

This phase of treatment uses drugs to target and kill any remaining cancer in the body.

Do such drugs actually target any "psychiatric condition"?

All drug and many device trials target a subset of the population, meaning not everyone can participate.

The reason: Because these powerful drugs target bacteria in general, they can disrupt populations of beneficial microbes.