5. Olive leaf extract
An active substance in olive leaf extract, oleuropein, is thought to have antifungal, antimicrobial, and immune-boosting abilities.
You can apply olive leaf salve directly to nail fungus or ingest in capsule form.
According to a 2012 review, taking one to three olive leaf capsules with meals twice daily is more effective than olive leaf salve in treating toenail fungus. It’s recommended that you drink plenty of water throughout this treatment.