Maxitech Dimed-G Betamethasone Gentamicin Cream 15gMaxitech Dimed G Betamethasone & Gentamicin Topical Cream 15g Dimed G Cream by Maxitech is a dual action prescription topical cream combining betamethasone dipropionate (corticosteroid) and gentamicin sulfate (aminoglycoside antibiotic). It is indicated for skin conditions where both bacterial infection and inflammation are present. Prescription required. Betamethasone reduces redness, swelling and itching by suppressing the inflammatory response.