Your dog does a lot to keep you and your family, and as a pet parent, you want a multivitamin that will do just as much as he does.. 4-In-1 Support - 120 Chews It doesn’t matter if your canine companion is a young pup or an old timer—Chew and Heal All In 1 Vitamin Dog Supplement is safe and effective for dogs of all ages. By providing your dog with supplemental glucosamine and chondroitin, this tasty chew aids in the health of his joints, hips, muscles, bones and cartilage, while the blend of omega fatty acids will have his coat looking Westminster-ready.