If your dog refuses to take supplements, there are several strategies you can try to encourage them to consume the supplements. You can try mixing the supplements with their food or a treat to mask the taste and smell. Alternatively, you can try offering the supplements in a different form, such as chewable tablets or liquid formulas. It may also help to gradually introduce the supplements into your dog's routine and offer plenty of praise and rewards for cooperation. If your dog continues to refuse the supplements, consult with your veterinarian for alternative options or recommendations.