💉 Peptide Delivery Systems: Spotlight on Nasal Sprays

When it comes to peptide research, one of the most important variables isn’t just the compound itself — it’s how you deliver it.

📦 Common Delivery Systems

Subcutaneous (SubQ) injection – the most popular method for many peptides, offering steady absorption.
Intramuscular (IM) injection – delivers deeper into muscle tissue, sometimes used for faster or stronger uptake.
Oral capsules – rare for peptides due to breakdown in the digestive tract, though a few analogues are being developed.

👃 Why Researchers Use Nasal Sprays

Nasal sprays have become increasingly popular for certain peptides (like Semax and Selank) because:

⚠️ Considerations

Peptide stability in solution is lower than in lyophilized form → small batches are best.
Proper reconstitution, sterile handling, and labeling are key to maintain integrity.
Not all peptides are suitable for nasal delivery — this depends on molecular size, stability, and supporting research.

📄 I’ve also prepared a step-by-step SOP for making research nasal sprays from lyophilized powders (Semax / Selank).

👉 See the attachment for details.

🧪 For laboratory research use only. Not for human use

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