A basic and specific LC strategy is depicted for the assurance of Efavirenz and pyrazinamide measurements structures. Chromatographic partition was accomplished on a c18 segment utilizing portable stage comprising of a blend of Sodium di hydrogen phosphate cushion (KH2PO4 and K2HPO4) Acetonitrile (40:60v/v), with identification of 252nm. Linearity was seen in the range 100-500 µg/ml Efavirenz (r2 =0.99) and 100-500µg/ml for pyrazinamide (r2 =0.999) for the measure of medications assessed by the proposed strategies was in acceptable concurrence with the name guarantee. The proposed techniques were approved. The exactness of the techniques was evaluated by recuperation learns at three distinct levels. Recuperation tests showed the nonattendance of obstruction from usually experienced pharmaceutical added substances. The strategy was seen as exact as demonstrated by the repeatability examination, indicating %RSD under 2. Every single factual datum demonstrates legitimacy of the techniques and can be utilized for routine investigation of pharmaceutical measurement structure. 400 volumes of pottasium di hydrogen phosphate and Di potasium hidrozen phosphate support and 600 volumes of ACN were readied. The versatile stage was sonicated for 10min to evacuate gases. Keywords: Efavirenz, Pyrazinamide, RP‐HPLC, Simultaneous estimation.