VLS vs SerenQ: Comparing the Pen Ranges

📅 August 18, 2026 ⏱️ 2 min read ✍️ Team TPS

VLS and SerenQ both make pre-filled peptide pens. The difference is breadth, not format.

The ranges

VLS makes GLP-1 pens: tirzepatide and retatrutide. Narrow and focused.

SerenQ covers the GLP-1s plus repair peptides, GH and secretagogues, cosmetic peptides and cellular energy compounds, tirzepatide, BPC-157, HGH, blends and more.

What is the same

The format proposition is identical. Both arrive pre-filled and in solution, so there is no reconstitution, no bacteriostatic water, no concentration decision and no drawing by eye.

Both dial in units of volume rather than milligrams, which is the error people actually make. See how to read a peptide pen dial.

Handling is the same for both: fresh tip, prime to a droplet, refrigerate, never freeze.

What differs

Breadth. If you want anything other than a GLP-1 in pen form, SerenQ is the range that has it.

Verification. SerenQ pens carry a serial and a QR code resolving to the manufacturer’s own record, which is a check you can run yourself. See verifying a SerenQ pen and spotting counterfeits.

Strengths available. Both offer more than one strength on the GLP-1s, which matters because these compounds step up gradually rather than starting at the target amount.

Comparing on price

Do not compare on the milligram figure. What matters is cost per dose at the amount you actually intend to use, and that depends on concentration and how the dial divides the cartridge, how many doses are in a pen works through it.

Choosing

For a GLP-1 alone, either range does the job and it comes down to price per dose and what is in stock. For anything beyond a GLP-1, or if manufacturer-side verification matters to you, SerenQ is the broader and more traceable option.

See the VLS range and which peptide to start with.

Supplied for research purposes only.