Amazon with Apex Nutrition has the 90-count Zahler Certified Kosher 25mg Chewable Zinc Lozenges Tablets with Elderberry for Kids and Adults for $6.95 - 25% off coupon (clip coupon) - 10% off with Subscribe & Save (can cancel at any time) - 40% off with coupon code ZINCELDER40 at checkout = $1.73 with free shipping on $35+ or with Prime.