OTCalso: オーティーシーFreq.FrequencyTop 100,000Meanings1nounover-the-counter drug; OTC medicineRefers to non-prescription medicines available at pharmacies and drugstores.この薬くすりはOTCなので、処しょ方ほう箋せんなしで買かえます。This medicine is OTC, so you can buy it without a prescription.