An automatic method for the determination of amylocaine and bromhexine hydrochloride by atomic absorption spectrometry (AAS) is proposed. The drugs were determined indirectly by formation of reineckates, extraction into 1,2-dichloroethane and measurement of chromium in the organic phase. The chemical conditions and experimental variables influencing the performance of the flow system of the liquid-liquid extractor were established. The proposed method allows the determination of amylocaine and bromhexine at concentrations between 3 and 120 micrograms ml-1 with a relative standard deviation of 1 and 3%, respectively, even in the presence of other synthetic drugs.