Comefonal acne treatment using retinol. Any suggestions?

Hi..my doctor has prescribed 0.025 retino alternate day and nexna tab every day for acne..nexna i started 2 days back..can you please help if nexna has any side effects??Also after using retino for 2 months my face was clearing up but now i see more comedones on forehead...should i continue with the medicine or is the medicine loosing its effect

No doctor answers yet