Due to change of insurance, i can no longer afford clindamycin phosphate benzoyl peroxide gel and tretinoin cream. is there is any compatible octs?

No: there is a generic form of this combination med in the US, but it is also a prescription med.For those who have gone through the various strengths of OTC benzoil peroxide and not gained control, the prescribed meds remain the best alternative available.

Acne: You can try Benzoyl Peroxide which is available over the counter. Two strengths are available - 5% and 10%. It comes as a face wash and topical cream. It may show effects in about 4-6 weeks, If the acne has pustular appearance then you may tray oral antibiotic as well which again is a prescription only.