I can't say enough praise for this product It came in on time and in excellent condition. As far as how it works Well I hope I can give hope to some of my Post Polio comrades. I'm 62 yrs old I contracted polio at around 1yr. About 1954. Lately I've had issues with terrible pain in my legs upon waking. Since taking the black cumin seed oil. I have to say that pain has almost completely gone away.
Disclaimer: results may vary based on individual experience.