What do Cipro, Flonase, Prozac, Lipitor, and Crest toothpaste all have in common? 👀 💡 The answer is fluoride. Not just the kind in toothpaste — but fluorine, built into the chemical design of many medications. It’s added to make drugs stronger, last longer, and reach deeper, even into your brain. 🧬 Here’s why that matters: Fluoride can cross the blood-brain barrier and collect in areas that control memory, focus, and sleep— like the hippocampus, cortex, and pineal gland (which makes melatonin