ซื้อdextromethorphan 15 mg capsule, hard, 1 capsule (51.99.99.99 -293175),amitriptyline 25 mg prolonged-release capsule, hard, 1 capsule (51.99.99.99 -438027),bisacodyl 5 mg capsule, hard, 1 capsule (51.99.99.99 -329896) โดยวิธีตกลงราคา