🧴 Promethazine 3 mg + Codeine 4 mg per 5 mL Syrup Pharmaceutical-Grade Research Solution

Buy promethazine & codeine syrup. Promethazine 3 mg + Codeine 4 mg per 5 mL is a pharmaceutical-grade dual-action formulation widely referenced in medical, pharmacological, and academic studies exploring cough suppression, antihistamine activity, and CNS modulation.
This precisely balanced syrup combines the antihistaminic and anti-emetic effects of Promethazine with the centrally acting cough-relief properties of Codeine, making it ideal for controlled research use and formulation reference.

All batches from Global Research Chem are ISO / GMP certified, HPLC verified, and sealed in laboratory-safe bottles to preserve purity and integrity for reliable experimental data.

🔬 Research Applications

• Respiratory pharmacology and cough-control modeling

• Antihistamine-opioid combination synergy studies

• CNS depressant interaction analysis

• Formulation stability and bioavailability evaluation

• Analytical chemistry calibration of dual-component syrups

🧠 Mechanism of Action

• Promethazine blocks H₁-histamine receptors, reducing histaminic stimulation in the CNS.

• Codeine activates µ-opioid receptors in the medulla, suppressing the cough reflex.
  Combined, they provide a sedative, antitussive, and antihistaminic research model valuable for studying respiratory and neurological pathways.

🌍 Key Benefits
Buy promethazine & codeine syrup

✅ Pharmaceutical-grade purity (≥ 99 %)
✅ ISO / GMP certified production
✅ Long-term stability at 2 – 8 °C
✅ Perfect ratio for dual-action research
✅ Fast global delivery and secure packaging

⚠️ Safety & Handling

For research use only. Not for human or veterinary consumption.
Handle under standard laboratory protocols:

• Wear PPE (gloves, goggles, lab coat).

• Avoid ingestion or skin contact.

• Store sealed, cool, and away from direct light.

🧴 Packaging & Storage

| Packaging Type | Amber pharmaceutical bottle |
| Volume Options | 60 mL / 120 mL / 500 mL |
| Storage | 2 – 8 °C ; Dry, dark place |
| Shelf Life | 24 months (unopened) |