Terranova Zinc 15mg (50). Terranova Zinc 15mg Complex contains zinc in a bisglycinate form which is easily absorbed. The whole food base contains foods which are naturally rich in zinc. Zinc may help to support the immune system and help with colds and flu.. Stabilized Rice Bran 250mg. Spirulina [Spirulina platensis ORGANIC] 75mg. Pumpkin Seed [Cucurbita pepo] 50mg. Acai Berry [Euterpe oleracea] (fresh freeze dried ORGANIC) 25mg. Zinc (as bisglycinate) 15mg