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Caroline started helping in Facebook cancer groups, including "Fenbendazole for Cancer" and "Fenbendazole and Other Alternative Choices." She then focused on "Fenbendazole Cancer Support," a smaller group with one leader. The "Fenbendazole Cancer Support" group has grown to over 100k+ members during the last 6 years.

Caroline Williams developed the products “Fenben Bio,” a bioavailable version of fenbendazole, and a patent for a fenbendazole nasal delivery system proposed for brain cancer treatment research and development (R&D).

In 2017, Caroline Williams introduced the first fenbendazole product on the market for alternative usage and trademarked the name “Fenben®”.

Caroline’s journey from despair to renewed health inspired her to want to give others the same hope for healing. The Fenbendazole Foundation was born from that desire.