Key Benefits: ✓ USP-grade, 1.3% concentration (30% stronger per drop than standard 1% formulas)✓ Independently tested for heavy metals and purity✓ Made in Australia, no fillers or additives What is this? Methylene blue is a long-established compound with a history in industrial and clinical settings, originally used as a laboratory dye. We sell it here as a raw, purity-tested ingredient. This listing does not make any therapeutic, cognitive, or anti-ageing claims — if you're considering using it, we'd recommend speaking with your healthcare provider first. Why this formula Purity matters more here than almost any supplement — industrial-grade methylene blue can carry unsafe impurities. This is USP-grade, at 1.3% concentration (30% stronger per drop than the more common 1% products), independently tested for heavy metals. Product overview A USP-grade methylene blue liquid in distilled water, at 1.3% concentration for a stronger per-drop dose than standard 1% formulas. No fillers, additives, or flavours. Made in Australia. Who it’s for New to methylene blue and wants a reputable, tested source to start with Wants a higher-concentration formula without needing more drops per dose Not currently taking antidepressants or other serotonergic medication What’s inside Methylene Blue (1.3% USP grade), Distilled Water, Grain-Free Alcohol (for shelf-stability and to reduce dropper contamination). No fillers or additives. How to use Start low and slow — 1–3 drops diluted in water or juice, gradually working up to 10–15 drops as tolerated. Citrus helps mask the naturally bitter taste. Can also be taken under the tongue for faster effect, though this will temporarily colour the tongue blue. Safety & Compatibility Do not use if pregnant, breastfeeding, or if you have G6PD deficiency.Not suitable for use alongside SSRIs, SNRIs, MAOIs, or other serotonergic medication. Speak with your healthcare professional before use if you're taking any medication.Will temporarily stain the tongue, teeth, and lips blue, and turn urine blue — both harmless and short-lived. If you have dentures or veneers, take extra care, as methylene blue can permanently stain non-organic materials.Store below 25°C, away from direct sunlight, with the lid tightly closed. Methylene blue is a potent pigment and will permanently stain clothing, fabric, carpet, and most surfaces on contact. Handle over a sink or protected surface, and wipe up any spills immediately.