Acne has multiple cause and there are many forms of treatments. Topical antibiotics can help as it is a bacterial condition. Some agents that improve exfoliation can also help. Oral medications like antibiotics also may be needed, but this will depend on the particular patient.
With all medications, they should never be taken without the supervision of a dermatologist. Remember – what works for someone else may not work for you, and may actually do more harm than good.
Self-medication can be harmful for your skin and health, and a qualified doctor will be able to understand your particular skin and body type, lifestyle, and therefore whether isotretinoin will be suitable for you.