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    1. Melatonin Hormone that regulates sleep, sold as a supplement
    2. Neem Oil Oil from the neem tree, used in traditional remedies
    3. Vitamin D Vitamin made in the skin from sunlight, also taken as a supplement
    4. Biotin B vitamin, often sold as a hair supplement
    5. Rapamycin Immune-suppressing drug, also called sirolimus