ซื้อhydroxyzine hydrochloride 10 mg/5 mL oral solution, 60 mL bottle (51.99.99.99 -616393),ASIABRON (guaifenesin 30 mg/5 mL + theophylline 50 mg/5 mL) oral solution, 60 mL bottle (51.99.99.99 -639754),guaifenesin 100 mg/5 mL oral liquid, 60 mL bottle (S60/0420) โดยวิธีตกลงราคา