Tryptyr is part of the TRPM8 Receptor Agonists class and treats Dry Eye. TRPM8 Receptor Agonist are used to treat dry eye. They work by binding to the TRPM8 receptors and activating them, which triggers a series of intracellular events that result in the sensation of cold. This cooling sensation can can counteract the sensation of pain or discomfort..It also activates cold-sensitive receptors on the eye's surface, which increases tear production. Tryptyr is only available as a brand name drug.

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