Sonoin-E Gel 0.5mg + 20mg – Isotretinoin and Erythromycin for Acne TreatmentSonoin E Gel 0. 5mg + 20mg Acne Treatment with Isotretinoin and Erythromycin Sonoin E Gel is a potent topical treatment for acne, combining the effectiveness of Isotretinoin 0. 5mg and Erythromycin 20mg. Isotretinoin, a powerful form of Vitamin A, works by reducing the production of sebum (skin oil), preventing clogged pores, and reducing acne causing bacteria. Erythromycin, an antibiotic, works in tandem to control bacterial growth, aiding in faster