Homeopathic. Zinc; Gluconate; Glycine. Great tasting flavor! Shorten your cold! Get better faster! 50% More lozenges free. 27 Lozenges for the price of 18. Clinically proven Cold-Eeze cuts colds almost in half. Effectiveness: Cold-Eeze, the original Zinc Gluconate Glycine formula, shown to be safe and effective in reducing the severity of symptoms by 42% and duration by 3 to 4 days in two double blind placebo controlled clinical studies. This product has no expiration date. No. 1 Pharmacist recommended zinc cold remedy lozenge (Pharmacy Times: Survey of Pharmacists recommended Zinc cold remedy lozenges). Non-drowsy formula. Made in USA.