We all want to do our best by our furry kids. But it’s easy to unwittingly take it to an extreme.

Some folks supplement their pet’s diet with a slew of products, including vitamins, minerals, joint supplements and herbs. Certain supplements have no proven efficacy, while others can have potently adverse effects. For example, overlapping supplements that contain vitamin D and calcium can result in dangerously high blood calcium levels.

So, always consult your veterinarian before supplementing your pet’s diet. Commercial diets are virtually always complete, so additional vitamins and minerals are unnecessary. On the other hand, homemade diets require supplementation as recommended by a veterinary professional. And always compare supplement labels to avoid products with redundant ingredients.