I applied ointment to the scrape.
This wound medicine works well.
塗り薬 is a general term for topical medicine, not limited to wounds; 傷薬 specifically targets injuries.
Standard kanji spelling for 'wound medicine'.
Rare kanji form using 疵 for 'wound'; it is rarely used.
Compound of 傷 (kizu, 'wound') and 薬 (kusuri, 'medicine'), with rendaku voicing of くすり to ぐすり.