I was having hip and joint pain before diagnosed with low vitamin D. I would wake up in the morning and my hands would be cramped. It was hard to exercise because of the hip pain. After supplementing for years, I found it greatly helped the arthritis and also my shoulder pain due to Bursitis. I usually have good success with Solgar products so maybe this was just an off seller or off batch. My hands have been cramping again and my shoulder has been hurting. I feel like this product is doing nothing to help! I finally decided to switch brands and I hope it will make a difference. Sorry, Solgar, you lost my business on this and I won't be purchasing D3 from you again