What is Methylene Blue Injection?
Methylene Blue Injection is a purified aqueous solution of methylene blue (methylthioninium chloride), a well-established medication with a wide range of clinical and diagnostic applications. Each milliliter contains 10 mg of methylene blue, formulated for intravenous administration under medical supervision.
Key Uses & Indications
- ✅ Methemoglobinemia Treatment — Rapidly converts methemoglobin back to functional hemoglobin
- ✅ Urinary Tract Antiseptic — Helps manage mild urinary tract infections
- ✅ Surgical Marker — Used to identify tissues, fistulas, and sentinel lymph nodes during surgery
- ✅ Cyanide & Carbon Monoxide Poisoning — Adjunct therapy in poisoning cases
- ✅ Ifosfamide-Induced Encephalopathy — Supportive treatment in chemotherapy complications
- ✅ Diagnostic Imaging Aid — Assists in visualizing anatomical structures during procedures
Product Highlights
| Feature | Details |
|---|---|
| Generic Name | Methylthioninium Chloride |
| Concentration | 10 mg/mL |
| Route of Administration | Intravenous (IV) |
| Available Pack Sizes | 5 mL, 10 mL vials |
| Storage | Store below 25°C, away from light |
| Shelf Life | As per manufacturer labeling |
| Prescription Required | Yes |
How It Works
Methylene blue acts as an electron carrier, activating the enzyme NADPH-methemoglobin reductase. This process reduces methemoglobin — an abnormal form of hemoglobin that cannot carry oxygen — back to its functional form, restoring the blood’s oxygen-carrying capacity quickly and effectively.
Dosage & Administration
⚠️ For use by or under the supervision of a licensed medical professional only.
- Standard Dose: 1–2 mg/kg body weight administered intravenously over 5–30 minutes
- Repeat dosing may be required depending on clinical response
- Dosage adjustments required for patients with renal impairment or G6PD deficiency
Safety Information & Precautions
- ❌ Contraindicated in patients with G6PD deficiency (may cause hemolytic anemia)
- ❌ Avoid in patients with known hypersensitivity to methylene blue
- ⚠️ Serotonin Syndrome Risk — Do not use with serotonergic drugs (SSRIs, SNRIs, MAOIs)
- ⚠️ Pregnancy Category X in high doses — Use with caution
- 🔵 May cause blue-green discoloration of urine and skin temporarily — this is normal
Side Effects
Common:
- Blue discoloration of urine and skin
- Nausea or vomiting
- Headache or dizziness
Serious (Seek Immediate Medical Attention):
- Chest pain or shortness of breath
- Signs of serotonin syndrome (agitation, rapid heart rate, high fever)
- Hemolytic anemia in G6PD-deficient patients
Why Choose Our Methylene Blue Injection?
- 💊 Pharmaceutical-grade purity — manufactured under strict GMP standards
- 🏭 Trusted by hospitals and clinics worldwide
- 📦 Tamper-proof packaging for safety and sterility
- 🔬 Batch-tested for potency, sterility, and safety
- 🚚 Reliable supply chain for healthcare institutions
Frequently Asked Questions
Q: Is methylene blue injection available over the counter?
No. It is a prescription-only medicine and must be administered by a healthcare professional.
Q: How quickly does methylene blue injection work?
In cases of methemoglobinemia, improvement is typically seen within 30–60 minutes of administration.
Q: Will methylene blue change the color of my urine?
Yes. Temporary blue-green discoloration of urine is a normal and expected effect.
📌 This product is intended for professional medical use only. Always consult a licensed physician before use.

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