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White pre-filled Semaglutide 4mg injection pen with cobalt base ring on warm creamCold-chain dispatch
Semaglutide 12mgTirzepatide 30mgRetatrutide 30mg
GLP-1 injection pen · ready-mixed

Semaglutide 4mg

Pre-filled pen · 99% purity

A ready-mixed Semaglutide pen at the 4 mg strength — the usual entry point for a titration protocol. Semaglutide is a GLP-1 receptor agonist, the most widely studied compound in the weight-management category. The pen arrives filled and sealed: click the dose, attach a needle, done.

What it does

  • GLP-1 receptor agonist — the most-studied molecule in the category
  • 4 mg strength — the standard starting point before stepping up
  • Ready-mixed: no vials, no bacteriostatic water, no maths
  • Dose window confirms every click before you press
  • 99% purity, batch-tested — COA available per batch

How it's delivered

4 mg pre-filled pen. Weekly subcutaneous dosing, titrated. Ships cold-chain in an insulated pack.

Price on request
4 mg pre-filled pen · starter box included
Enquire about Semaglutide 4mg

Pricing is confirmed directly with our team.

Open white SummerPeptides starter box holding a Semaglutide 4mg pen and four needle tips
The starter box

Everything for Semaglutide 4mg,
boxed and ready.

Each pen ships in its own box, printed for that molecule and that strength — so what arrives is unmistakably the thing you ordered. Inside: the pen in a foam cradle, needles, swabs and a dosing card.

  • 1× Semaglutide 4mg pre-filled pen
  • 4× LiteTouch pen needles
  • 1× alcohol swab set
  • Printed dosing and storage card

Shipped cold-chain in an insulated pack with The Courier Guy, tracked door to door.

The rest of the pen range

White pre-filled Semaglutide 12mg injection pen with cobalt base ring on warm cream

Semaglutide 12mg

The maintenance strength. Fewer reorders, same simple pen.

White pre-filled Tirzepatide 30mg injection pen with cobalt base ring on warm cream

Tirzepatide 30mg

Dual-agonist. A full protocol in a single pen.

White pre-filled Retatrutide 30mg injection pen with cobalt base ring on warm cream

Retatrutide 30mg

Triple-agonist. The newest molecule in the category.

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