Suggest Treatment For Severe Acne

I have a sensitive skin and I have acne problem I had used facelin gel before 4 years and it was cured also given a good glowing skin now again I am stuck with this same problem and I consulted our family doctor.this time he prescribed sebonac gel.am very confused should I use this or continue with facelin.why he gave me another gel like sebonac
Thank you
Amrin vk