Dog multivitamins and supplements are typically offered as liquids, soft chews, and powdered formulas.
Most listings indicate suitability for all life stages and all breed sizes, commonly labeled “Pet Lifestage: All Ages” and “Breed size: All Sizes.”
Common active ingredients include glucosamine for joints; omega-3s (EPA/DHA) for skin and heart health; probiotics and prebiotics for digestion; taurine and biotin; colostrum; herbs such as astragalus; and multi-mushroom blends used in immune-support formulas.
Dosages are shown in several formats: liquids may list servings per carton (for example, 8 servings for a 50 lb dog), mushroom powders use scoop-based dosing by weight (e.g., one scoop under 25 lb, two for 26–75 lb, three for over 75 lb), and some oils use a pump dispenser.
Many formulas include omega-3 fatty acids or fish oil and other nourishing ingredients specifically to promote healthy skin and a shiny coat; several products explicitly list skin and coat health as a targeted benefit.
Supplements are often used as meal toppers or mixed into food: ready-to-serve broths are poured over meals, powders are sprinkled by scoop, and oils or liquid toppers are dispensed with a pump into the dog’s food.