Antibiotics aren’t harmless … they come with some long term side effects. What most people don’t realize is that antibiotics can seriously damage your dog … forever. While antibiotics may knock out an infection, they’ll also do permanent harm to your dog’s gut health. Along with the bad bacteria from the infection, antibiotics also kill the good bacteria. Your dog needs these to support his digestive health and immune system. When antibiotics damage your dog’s gut bacteria, they don’t just cause digestive issues. About 90% of your dog’s immune system is in his gut, so an unhealthy gut means lowered disease resistance. That’s a good reason to use antibiotics only as a last resort. Research shows it’s better to use olive leaf as a safe, natural option that does not kill good bacteria.