Zydus Cadila has received the Food and Drug Administration's approval for its generic Diovan (valsartan and hydrochlorothiazide tablets).The product will be available in dosage strengths of 80 mg/12.5 mg, 160 mg/12.5 mg, 160 mg/25 mg, 320 mg/12.5 mg, and 320 mg/25 mg.The product is the generic of Novartis’ Diovan HCT tablets. The drug is used to treat high blood pressure.