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|  Routes of administration  | By mouth, topical | 
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| Formula | C22H14F3NO5 | 
| Molar mass | 429.351 g·mol−1 | 
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Funapide (INN; former developmental codes TV-45070 and XEN402) is a novel analgesic under development by Xenon Pharmaceuticals (formerly in partnership with Teva Pharmaceutical Industries) for the treatment of a variety of chronic pain conditions, including osteoarthritis, neuropathic pain, postherpetic neuralgia, and erythromelalgia, as well as dental pain. [1] [2] [3] [4] It acts as a small-molecule Nav1.7 and Nav1.8 voltage-gated sodium channel blocker. [1] [2] [4] Funapide was evaluated in humans in both oral and topical formulations, and as of July 2014, had reached phase IIb clinical trials. [1] [3] Development of the drug was discontinued in 2022. [5]