Holistica Oligophytum Zinc is a zinc supplement, an essential mineral for the immune system, skin and overall well-being. It contains zinc gluconate, an easily absorbable form of this mineral. Be sure to include this supplement in your daily routine to maintain adequate zinc levels in the body. Composition Water, zinc gluconate. Instructions for use Take 1 teaspoon per day, preferably during meals. Pharmaceutical advice Zinc is essential for immune system and skin health. Combine it with a diet rich in whole foods.