Methylene Blue USP Grade 4oz Bottle Dropper

✨ Pure and Safe: USP Grade Methylene Blue — 4oz Liquid Drops NeuroBlue Methylene Blue Liquid Drops in a 4oz bottle — USP pharmaceutical-grade, third-party lab-tested Methylene Blue in our most popular mid-size format. Made in the USA in a facility held to the highest quality standards, so you know exactly what you're getting, every drop. ✨ Maximum Purity: UV-verified at 99.9–100.4% purity — pharmaceutical-grade quality you can trust. 🇺🇸 Made in the USA: Manufactured domestically with a proven track record of strength and consistency — about 85% of our customers come back for more. 🔒 Heavy Metal Free: Independently tested and certified free of heavy metals. 🔒 Formaldehyde Free: No formaldehyde, no harsh preservatives, no fillers — just clean, simple formulation. 🧴 Amber Glass Bottle: 4 fl oz (118mL) amber glass bottle with a built-in dropper for precise, mess-free dosing. 🔬 Precise, Reliable Dosing: Every 1mL (20 drops) delivers 10mg of 1% Methylene Blue — about 0.5mg per drop, so you always know exactly how much you're taking. 🌱 Easy Clean-up: Spills happen — lift stains fast with lemon juice, lime juice, or ascorbic acid. Why choose the 4oz size? Twice the supply of our 2oz bottle at a better cost-per-mL, without committing to a bulk 8oz size — ideal for regular use.