Sounds like 8 drops is a big dose for a dog. If the Arthritis isn't caused by pathogens Miracle-Mineral-Supplement won't help. Because Miracle-Mineral-Supplement is an oxidizer it could possibly lower the collagen levels. MSM would probably be a better supplement as it increases collagen levels and helps with inflammation. Pets do well on ionic silver also. I wonder how they might do on LugolsIodine supplementation?