Directions for Use

PreHistin® is safe and easy to use. For best results, simply dissolve one cherry flavored lozenge under your tongue and swallow, twice a day for 30 days.

PreHistin® works by rebalancing your immune system to maintain normal response to allergens. PreHistin® helps to build up your immune system when taken as directed. For best results, continue taking PreHistin® year round. You can begin taking PreHistin® at any time, but it generally requires several weeks to see optimal results.  So the sooner you start, the sooner you will see results.

PreHistin® is effective for both indoor and outdoor allergens, and safe for long-term use year round.