The Best Olive Leaf Extract Supplements in 2022 - GoodnessMe Comvita Olive Leaf Lozenges. Delivering so much more to your throat than just sugar, Comvita's unique lozenges combine Olive Leaf Extract (fresh from their Queensland farm) with UMF10+ Manuka Honey, a sore throat's BFF. These are a great way to get your olive leaf in if you struggle to get the capsules or liquid down. Kid-friendly, too.