Supplement Ear Infection Remedies. 1  Garlic oil ear drops: (2 warm drops in ear daily) Antibacterial and anti-inflammatory. 2  Zinc (10 mg 2x a day for those older than 2 years old) Zinc boosts immune function and promotes healing. 3  Vitamin C (1,000mg 3x a day for adults, 500 mg 2x daily for children 6-12 yoa)