Advanced Lean Stack

This page sets out what the Advanced Lean Stack contains, how its three-pen composition differs from Veyvora’s lower-tier bundles, and what to confirm before ordering.

View the Advanced Lean Stack on Veyvora.com and add it to your cart →.

Veyvora’s Advanced Lean Stack is a fixed three-pen research bundle comprising Retatrutide 40, NAD+ 1000, and Tesamorelin 20, supplied strictly for in-vitro laboratory research use only and available through Veyvora’s Metabolic & Weight category, with a stated saving of 12–15% against individual pen prices [1].

The Advanced Lean Stack sits at the highest tier of the Metabolic & Weight range, above the two-pen Lean Stack (Tirzepatide 40 plus NAD+ 1000), because it adds Retatrutide 40, a triple GIP (glucose-dependent insulinotropic polypeptide)/GLP-1 (glucagon-like peptide-1)/glucagon agonist that the two-pen configuration does not include [1]. Each pen is independently assayed, shipped cold within 24 hours in gel-packed insulated cartons, and accompanied by a batch-specific certificate of analysis (CoA) on request [2][3].

Key Takeaways

• The Advanced Lean Stack bundles three independently assayed pens, Retatrutide 40 mg, NAD+ 1000 mg, and Tesamorelin 20 mg, at 12–15% below the combined individual prices.
• All three compounds are supplied for in-vitro laboratory research only; none holds an MHRA marketing authorisation for human use.
• The exact GBP bundle price is not shown in publicly accessible content and must be confirmed on the Veyvora product page before ordering.
• Each pen ships cold within 24 hours with a temperature-indicator strip; verify the batch number against its CoA before any laboratory use.

The Advanced Lean Stack Research Bundle contains three independently assayed multi-dose pens, Retatrutide 40 mg, NAD+ 1000 mg, and Tesamorelin 20 mg, each supplied as a sealed 3 mL barrel with 300 audible clicks, 10× 31G 6 mm pen needles, a printed dosing card, and a CoA available on request [1][2][3].

Retatrutide 40 is a triple GIP/GLP-1/glucagon agonist and the newest generation of incretin-class metabolic research peptides [1]. NAD+ (nicotinamide adenine dinucleotide) 1000 delivers high-dose substrate for cellular-energy and longevity research at 3.33 mg per click [2]. Tesamorelin 20 is a stabilised growth-hormone-releasing factor analogue used in visceral-fat research at 67 µg per click [3].

The shared click-pen format removes the need for manual reconstitution and syringe-based unit conversions, which cuts a common source of preparation error in laboratory settings. For correct storage conditions prior to in-vitro use, consult Veyvora’s research-peptide storage and stability handling guidance.

Every pen in the Advanced Lean Stack ships with a batch-specific CoA reporting identity and HPLC (high-performance liquid chromatography) purity. Veyvora states that purity is verified above 98% using HPLC, mass spectrometry, and endotoxin assay before dispatch (Veyvora testing specification, 2026) [1]. Match the batch number printed on each pen against its CoA before beginning any in-vitro work. For a precise account of what HPLC purity does and does not prove, including its limits as an identity or sterility test, consult Veyvora’s dedicated assay explainer.

Cold-chain handling follows a consistent specification across the NAD+ 1000 and Tesamorelin 20 pages: pens are dispatched within 24 hours in gel-packed, insulated cartons using 2–8 °C mailers fitted with a temperature-indicator strip [2][3]. A green strip on arrival confirms the cold chain held; a tripped strip is grounds to query the order before use. The Metabolic & Weight category page frames batch-specific CoAs and cold-chain dispatch as the primary safeguards against underdosed or mislabelled product, a documented risk in the research-peptide market that Veyvora identifies explicitly [1].

CoA availability is listed as “on request” on the NAD+ 1000 and Tesamorelin 20 individual pages. Whether Veyvora includes CoAs in the box or issues them digitally for the Advanced Lean Stack bundle specifically should be confirmed before ordering [2][3]. Full research-peptide storage and stability handling guidance, covering temperature ranges, light exposure, and post-receipt shelf life, is available separately and should be reviewed before pens are logged into a laboratory inventory.

Every pen in the Advanced Lean Stack is supplied by Veyvora strictly for in-vitro laboratory research use only and carries no approval for human or veterinary consumption [1][2][3]. Retatrutide, tesamorelin, and NAD+ sold as research peptides do not hold MHRA marketing authorisations and are not licensed for human medicinal use in the United Kingdom as of 2026, which distinguishes them from prescription-only medicines such as licensed tirzepatide, regulated under the Human Medicines Regulations 2012 [4].

No content on the Advanced Lean Stack product pages constitutes dosing guidance, medical advice, or a treatment protocol. The week-by-week click schedules referenced in Veyvora’s dosing guide are framed explicitly as research titration references, not clinical recommendations [1]. Procurement of this bundle is appropriate only where the buyer can confirm an in-vitro research application and institutional compliance with applicable regulations.

Before committing any pen to laboratory use, verify your batch against its CoA to confirm the batch number matches the independently assayed certificate. To understand what HPLC purity above 98% does and does not establish about a compound, see what HPLC purity does and does not prove.

To confirm current bundle pricing, UK delivery terms, and distributor eligibility, contact Veyvora directly at info@veyvora.com, Monday to Friday, 09:00–18:00 GMT, or add the Advanced Lean Stack to your cart on Veyvora.com →.