One of the primary uses of colloidal silver for pets is as a substitute for prescription antibiotics. It can be added to water or given directly into a pet's mouth, to help fight off infections. Colloidal silver is a broad-spectrum antibiotic, with activity against many types of bacteria as well as viruses and fungi.
Its antifungal property makes it effective as a treatment for ringworm, which is normally treated in humans and pets with over-the-counter or prescription antifungal drugs. It can be applied several times per day directly to affected sites on a pet's skin, as well as added to pets' water for additional support. Some people prefer combining it with a powder such as neem powder and using it as a paste, rather than just applying it to the skin in liquid form.
In addition to ringworm, topical application of colloidal silver can help with other skin conditions and infections. Use it to flush wounds prior to other treatment and bandaging to reduce infection.
Colloidal silver is also effective as an eyewash or earwash. One drop per eye usually suffices for pets' irritated eyes, and administered several times a day can relieve and heal eye infections.
Used on teeth and gums, colloidal silver can help relieve irritated gums and improve gum health. It can be placed directly in a pet's mouth, or added to homemade tooth powder or tooth paste and used for brushing.
One expert uses colloidal silver with her horses, and has found it effective in dealing with an infected lymph system in one horse's leg. She sprays the exposed infected area with silver topically.
As with prescription antibiotics, natural antibiotics can disrupt good internal bacteria as well as bad. With internal use of colloidal silver, it is best to also provide your pet with a good probiotic, to ensure that healthy gut flora continue to thrive.