Advanced Lean Stack

This page sets out what the Advanced Lean Stack contains, what each of its three pens is studied for, how its composition differs from Veyvora’s two-pen Lean Stack, 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 for in-vitro laboratory research 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.
• Retatrutide 40 is a triple GIP/GLP-1/glucagon agonist, NAD+ 1000 a metabolic coenzyme for cellular-energy research, and Tesamorelin 20 a stabilised growth-hormone-releasing factor analogue used in visceral-fat research; all three are supplied for in-vitro laboratory research.
• Confirm the exact GBP bundle price 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 how the purity figure is measured and how it relates to the identity and endotoxin lines, see what HPLC purity does and does not prove, 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 presents batch-specific CoAs and cold-chain dispatch as the two assurances that travel with every pen [1].

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

Every pen in the Advanced Lean Stack is supplied by Veyvora for in-vitro laboratory research, such as receptor-signalling and cellular-energy assays in cell culture and use as an analytical reference material [1][2][3]. Not for human or veterinary use. The week-by-week click schedules in Veyvora’s dosing guide are research titration references for in-vitro work [1].

Before committing any pen to laboratory use, verify your batch against its CoA to confirm the batch number matches the independently assayed certificate. For how the HPLC purity figure above 98% is measured and reported, 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 →.