Gilliam Old-Fashioned Horehound Drops. Horehound is a member of the mint family that has been used for over a thousand years. Gilliam Horehound drops are made with 100% pure, natural horehound extract. The very mild herbal, but not too sweet flavor has been enjoyed for years by many people including airplane pilots and public speakers. They taste great and are sanded the old fashioned way. Each bag holds 4.5 Oz of naturally flavored horehound drops.