• 薬局やっきょく — pharmacy
• 薬品やくひん — chemical
• 服薬ふくやく — taking medicine
• 薬草やくそう — medicinal herbs
• 漢方薬かんぽうやく — Chinese herbal medicine
• 風邪薬かぜぐすり — cold medicine
• 睡眠薬すいみんやく — sleeping pill

The kanji 薬 combines the radical 艹 (grass, herbs) with the phonetic element 楽 (ease, comfort). It originally referred to herbs that bring relief or healing. Today it broadly covers all forms of medicine, from traditional remedies to modern pharmaceuticals.