I bought this product together with my 17 year old son, who has suffered from chronic bouts of pleurisy for the last 5 years. My son saw black cumin seed oil on the Internet as an alternative remedy for pleurisy, and decided to try it. He takes 1-2 capsules daily as a preventative. He started to get a flareup just recently, took 1 pill every hour or so, and the flare up passed within half a day,(they would last AT LEAST 36 hours) and with NONE of the excruciating pain that only oxycodone would relieve in the past. We are both so grateful, and highly recommend the product.