Add to Cart Quick view Quinine Bark 1 kg. Bulk Powder $50.00 $42.00 Quinine or Red Cinchona (Cinchona officinalis) bark – 32 oz. (1 kg.) bulk powder. Bulk orders are prepared once a week. Each order is prepared in the order it is received. Cut-off time for bulk orders is each Thursday at 10 AM EST... $50.00 $42.00 Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: $50.00 $42.00 Subtotal: Add to Cart