To use this tear stain supplement powder, simply give it to your dog or cat as recommended. It's suitable for pets over 12 weeks old. Remember, it hasn't been proven safe for pregnant animals or those intended for breeding. If you're giving your pet other medications, there might be a delay in drug absorption. Keep an eye on your pet's condition. If it worsens or doesn't improve, stop using the product and talk to your vet. And always keep this product out of reach of children and other animals. In case of an accidental overdose, quickly contact a health professional.