Peptide Dosage Calculator

The free, fast, and accurate online tool to calculate your peptide dose.

Free Educational Resources for the Peptide Research Community

Frequently Asked Questions about Peptides

Does shaking the vial during after reconstitution damage the peptide?

This keeps coming up, and it’s inaccurate. Gentle shaking to help a peptide go into solution does not harm typical research peptides. The “swirl, don’t shake” warning was borrowed from older protein‑handling practices for very large, fragile biologics, and it doesn’t apply the same way to the short‑chain peptides most labs are using.

If you prefer a lab source: Janoshik Analytical has addressed this several times in their videos. They perform third‑party HPLC testing on these materials as their core business, and their position is clear—normal shaking during reconstitution is acceptable.