P-91 is a hybrid that is a Northern Lights, Thai and Afghani mixture. P-91 has a smell that is easy going and mellow. P-91 is mostly sativa, and can possibly cause some to experience psychoactive effects. P-91 is a fast acting medication and doesn't tend to last very long. P-91 works best for those that suffer from moderate pain to help them quickly and effectively. This strain comes of quickly and lasts, causing it to meet many pain needs.