Check the listing for details. PetAlive Muscle and Joint Support-S 2 Pack. Color: Muscle Joint Support-S 2Pk, Condition: New, Made in CN. Listed at 86.64 USD. Muscle & Joint Support-S is a safe and effective, non-addictive natural herbal supplement. Formulated by our team of experts in natural medicine to promote muscle and joint health in dogs and cats, Muscle & Joint Support-S promotes skeletal system health and supports healthy cartilage. Muscle & Joint Support-S contains a scientifically chosen selection of herbs known to support joint health and ease of movement. Using a unique therapeutic blend of natural and herbal ingredients including devil's claw, spirulina, yucca, and glucosamine sulfate in a concentrated capsule, Muscle & Joint Support-S provides support for healthy muscles, joints and bones. Joints allow your pet's limbs to perform everyday actions like walking, sitting, jumping and running. All joints are cushioned by cartilage,.