咳嗽[gaisou] coughing
含嗽薬[gansouyaku] gargle medicine
嗽ぐ[kuchisusugu] to gargle

含嗽剤[gansouzai] mouthwash
嗽薬[ugaigusuri] mouthwash

胃薬[igusuri] stomach medicine
医薬[iyaku] medicine
医薬品[iyakuhin] medical supplies
医薬分業[iyakubungyou] separation of medical and dispensary practice (practise)
飲薬[nomigusuri] oral medicine

下し薬[kudashigusuri] laxative
下ろし薬[oroshigusuri] an abortive
下薬[geyaku] laxative
加薬[kayaku] spices
火薬[kayaku] gunpowder