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J Popul Ther Clin Pharmacol



Comparison of the effects of ivermectin, permethrin, and gamma benzene hexachloride alone and with that of combination therapy for the management of scabies.


The present study compared three scabicidal agents alone or with combination, the currently considered medicine of choice permethrin, oral ivermectin, and gamma benzene hexachloride in the local population of India. A total of 120 patients were studied. They were randomly divided into four groups -Group A, Group B, Group C, and Group D. Group A received topical 5% permethrin and oral placebo. Group B was given topical placebo cream and oral ivermectin in two dose regimen. Group C received topical 1% gamma benzene hexachloride with oral placebo, and Group D was given topical 5% permethrin and oral ivermectin. The improvement of lesions and pruritus were assessed in the next three follow-ups, i.e., on the 7th day, 14th day, and 28th day along with any adverse drug reactions (ADRs). It was found that Group A had 83%, 90%, 97%, and Group B had 70%, 81%, and 91% improvement of lesions in the three follow-ups respectively. Group C showed 57%, 70%, 86%, and Group D had 82%, 90%, 97% efficiency to decrease lesion count (p>0.05) respectively. Again, Group A observed 77%, 88%, and 94% improvement in pruritus in subsequent follow-ups, while for Group B it was 63%, 76%, and 86%. Group C had 55%, 71%, 85% efficiency, and Group D had recorded 77%, 88%, and 94% improvement to decrease pruritus (p>0.05). The incidence of adverse effects was found to be less in Group B, Group C, and Group D when compared to Group A.