Question

the substance which is used as an antiseptic as well as analgesics?

Answer 1

Clove is the naturally occuring substance that can be used as antiseptic and analgesic effects.
In Drugs , Phenol solution is used as an antiseptic and disinfectant.
Aspirin (Acetyl salicylic acid) is a chemical substance which lowers body temperature and reduces pain as well so it acts as analgesic as well as antipyretic.