Methylene Blue USP Grade Bottle Dropper 4oz Two Pack

✨ Pure and Safe: USP Grade Methylene Blue — 4oz Liquid Drops, Twin Pack (2 x 4oz) NeuroBlue Methylene Blue Liquid Drops, now in a convenient twin pack — two 4oz bottles of USP pharmaceutical-grade, third-party lab-tested Methylene Blue. Made in the USA in a facility held to the highest quality standards, giving you extra supply and better value without compromising purity. ✨ Maximum Purity: UV-verified at 99.9–100.4% purity — the same pharmaceutical-grade quality in every bottle of this twin pack. 🇺🇸 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. 🧴 Two 4oz Amber Glass Bottles: Each bottle is 4 fl oz (118mL) amber glass with its own built-in dropper — ideal for keeping one at home and one on the go, or sharing between two users. 🔬 Precise, Reliable Dosing: Every 1mL (20 drops) delivers 10mg of 1% Methylene Blue — about 0.5mg per drop. With two 4oz bottles, you get roughly 236mL combined — a long-lasting supply split across two convenient containers. 🌱 Easy Clean-up: Spills happen — lift stains fast with lemon juice, lime juice, or ascorbic acid. Why choose the twin pack? Two individually sealed 4oz bottles mean a backup is always on hand, fresher use with less exposure per bottle once opened, and better value per mL than a single 4oz purchase.