FAB IRON + Vitamin B Complex & Zinc Oral Capsules is an iron and Vitamin B complex supplement to meet your daily requirement, while being gentle on the stomach. FAB IRON + Vitamin B Complex & Zinc Oral Capsules is an iron and Vitamin B complex supplement to meet your daily requirement, while being gentle on the stomach. FAB IRON is a combination of easy to absorb iron, energy boosting B group vitamins and zinc to help restore energy and support your immune system. Specially formulated for vegetarians and vegans and also suitable for women and teenage girls. The capsules are derived from vegetable origin.