okay to take both grapefruit seed extract and oregano
For allergies: Quercetin combined with Vitamin C, and nettle tea.....all three have anti-allergenic (anti-histamine) properties. For microbes....you don't need colloidal silver. Oregano oil and Grapefruit seed extract are very potent antimicrobials.Take one or the other.Follow instructions on the bottle.or allergies: Quercetin combined with Vitamin C, and nettle tea.....all three have anti-allergenic (anti-histamine) properties. For microbes....you don't need colloidal silver. Oregano oil and Grapefruit seed extract are very potent antimicrobials.Take one or the other. Follow instructions on the bottle.