accutane is by far the strongest by there are some fucked up side effects that can come with it so i stay away.
i've used many different scripts for acne and by far the best with least side effects, IMO was doryx for a pill and differin or retin-A for a cream.
*Oral contraceptives may be less effective for people than the gels/lotions.
Clindamycin can be found in other acne fighting scripts such as Benzaclin and Cleocin T.
I've used the Cleocin T (the liq sol. with an applicator and the lotion) - dried my face, ance cleared slightly. Felt the lotion worked better, also it is available in pledgets (1mL soln/pad) and a gel.