The D isn't prescription but is in gel capsules and is D-3. I didn't know that about not being able to break down the gel capsules. Blood work shows my protein level is good. I don't eat sugar, hardly no fats at all. I'm watching my carbs because I have blood sugar problems. I've seen a dietitian so my eating seems to be on track. I have bad knees and was walking 2 1/2 miles everyday but had to stop because of the pain. I had injections in them (hyaluronan). I am better in the knees but I have other problems. When I had my bypass surgery they had to open me up and I had 2 emergency surgeries afterward because of an infection. I was in the hospital for 54 days. I have a hernia now in my abdomen. I wear a binder to hold everything in. I am in constant pain because of the hernia pulling on my shoulder muscles. I hurt in my collar bones, shoulders and upper back. I have been working out just recently on the bowflex....simple things. I have started walking again....only one mile a day. So, I am trying. I do need to try harder. I'm having surgery in June to repair the hernia. I work for a school district and will wait until school is out. Thank you so much for the information and for answering my post.