Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him)
How do we help people who accept Islam but struggle with drug addiction?
We should be overjoyed by the fact that they have accepted Islam. Those who have strong determination will very quickly deal with these addictions, although they are a minority. We should use different means to deal with these addictions such as natural remedies, moving them from bad environments to good environments and developing their love and veneration for Allah and His Messenger ﷺ and the afterlife.