Lindens Zinc, Magnesium & Vitamin B6. Lindens® Zinc Magnesium and Vitamin B6 tablets are a formulation of 3 vital nutrients in one convenient tablet. Just one convenient, easy to swallow tablet provides 64.5% NRV of zinc, and 100% NRV of both Magnesium and Vitamin B6 (NRV is Nutrient Reference Value), so even when you're on the go, you needn't leave nutrition behind.