What to do to get rid of pimples on my back?

Modern Rx: If this is acne, and they are abundant on the back, an initial trial of a topical agent such as Clindamycin long with either benzoyl peroxide or a retinoic acid derivative may be worth a try, but a systemic antibiotic that's right for you is generally required. If you're a lady and can and want to take the oral contraceptive pill, this is another option.