To cut down on competition, the government passed price controls on prescription drugs.为减少竞争，政府通过了处方药价格控制方案。Are you taking any other medicines whether on prescription or bought over the counter?你在服用其他什么处方药或非处方药吗？Some drugs are only available by / on prescription.有些药物只有凭医生的处方才能买到。The drug is available on prescription only.这种药只能凭处方购买。