Answer:
prodrug
Explanation:
Prodrug is an inactive form of a drug that is administered to a patient, that needs to be metabolized through normal body metabolism by the action of enzymes or chemicals. The drug becomes an active biological compound after conversion at the site of action.
Prodrugs are often employed to improve on the efficiency of drugs in delivering the drugs to specific tissues or cells and in some cases, to decrease toxicity.
Examples of prodrugs include fluorouracil, chloramphenicol, sulfasalazine, cyclophosphamide, codeine etc.
