Herbs and natural medicine are very useful and usually very safe unlike prescription drugs which use to be the fourth largest killer in north America behind strokes, heart attacks, & all cancers. Now doctor administered drugs kill more than cancers they are the 3rd leading killer but everybody wants the magic pill even if it kills them the drug companies don't want to cure you they want to give you something for the symptoms for a hundred dollars a month for 20 years even if it kills you. For joint problems anti-inflammatory aren't effective for long term use they damage the whole digestive system doing little good. Vitamins C can help arthritis but should be used with a B-complex and Glucosomine Chondroditen MSM taken twice a day liquid form is best this will help rebuild cartilage and surrounding tissue helping Dogs & People better than any prescription. They helped me and many people I know you don't have to take it for long to see lasting results I haven't in years. This is the dosage I would give to people or dogs over 100 pounds 1000mg of Ester-c twice a day 2000mg total given in small doses to build up to that level if the stools are loose back off the amount given till stools firm up that is the most they can use they can make there own Vit C but can use more. A good B vitamin complex one pill twice a day with added vit D. A liquid form of Glucosomine/Chondroditen/MSM Webber makes a good one taken twice a day for a total of 2000mg of each nutrient if you can't find a liquid soft capsules or powder are better than hard pills and hydrochloride is 50% more usable than sulfate. These things work for everybody that I have given it to and have been proven to work in people & dogs.