Pharmaceutical preparations Taken (µg/mL) Found (µg/mL) Mean % Rec Erythrocin 100 mg 15 15.03 100.45 19 18.98 99.82 23 23.14 100.84 Rulid® 50 mg 8 8.23 101.82 12 12.37 101.86 16 15.82 99.40 Claritek 250mg 24 23.96 99.49 28 27.81 99.37 32 31.97 99.72

Table 3: Recovery of macrolides in pharmaceutical formulations by the proposed method.