


Tesamorelin 20
A growth-hormone-releasing factor analogue in a 20 mg pen, studied for visceral-fat research.Each click delivers67 µgfrom a 3 mL · 300-click pen.
≈ £6.58a week across a 12-week protocol
Featured in these stacks: Muscle Growth, Advanced Lean Stack.


how many clicks
for your dose?
ThisTesamorelin 20pen holds20 mgacross 300 clicks, so each click delivers67 µg. Tap a dose or turn the dial; we'll count the clicks. For research reference only.
why123researchers chose this pen
chose it for the click dosing, no syringes, no unit maths.
verified purity, checked against the public COA before first use.
precise clicks in every 3 mL pen, the whole protocol in one barrel.
re-order or refer a colleague within three months.
about the
Tesamorelin 20pen
Tesamorelin is a stabilised growth-hormone-releasing-hormone analogue, supplied in a 3 mL / 300-click pen for research.
"Counted my clicks, done in ten seconds. No syringes, no unit maths, the dosing card lives on my desk now."
"Checked the batch number against the public COA before first use, matched to the decimal. That's why I switched."
"Arrived cold, packed like something precious. Temperature strip still green on arrival. Genuinely impressed."
why a pen beats
a vial & syringe
Traditional research peptides arrive as lyophilised powder that must be reconstituted, drawn into insulin syringes, and converted from milligrams to units by hand, every step a chance for a dosing error.
A multi-dose pen removes the whole failure chain. The peptide arrivesalready dissolved and calibrated. Attach a fresh needle, turn the dial until you count your clicks, and you're done, the same audible-click mechanism trusted in insulin and GLP-1 pens worldwide.
Pens travel and store better, too: no open vials, no bent needles, no septum contamination after repeated draws. One sealed barrel, ten sterile needles, one dosing card.
how to buy
peptides safely
The peptide market has a purity problem: independent surveys routinely find underdosed, mislabelled or contaminated product sold online. The only reliable defence isthird-party verification you can check yourself, not a supplier's own claims.
Before buying any peptide pen, ask three questions. Is every batch tested by an independent lab? Is the certificate of analysis available, so you can check your exact lot before first use? And does it ship cold-chain, insulated and gel-packed, so what was tested is what arrives?
Veyvora answers yes on every order, independent assay, a COA on request against the batch number, and cold dispatch within 24 hours, paperwork packed inside.


