Cammells Manuka Honey UMF 15+ is sourced from the Manuka Shrub found in New Zealand’s pristine bush area. This product has been extensively laboratory tested, and contains a level of UMF 15+. Top Manuka Honey uses: SIBO, Low Stomach Acid, Acid Reflux. Acne and Eczema. Staph Infections (MRSA) Burns, Wounds & Ulcers. Tooth Decay & Gingivitis. IBS and IBD. Sore Throats and Immunity. Allergies and Sinusitis.