DefiningLife

Research Use Only · 21+

Everything supplied by DefiningLife is intended strictly for laboratory research. Not a drug, medicine, or dietary supplement — not for human or animal consumption.

By entering you confirm you are 21 years or older and purchasing solely for legitimate research purposes.

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The Full Catalogue

Vials and pre-dosed pens, one certified source.

Every vial is HPLC/MS tested and shipped sealed. Prices shown in GBP. Fill out the contact form or message us on LINE to order — we don't process payment online.

All
Accessories
Cognitive
Growth Hormone
Immune & Hormonal
Longevity
Metabolic
Recovery
Recovery DefiningLife BPC-157

BPC-157 10mg

Body Protection Compound — the reference standard for tissue-repair research.

£25 /vial
Recovery DefiningLife TB-500

TB-500 5mg

Synthetic fragment of Thymosin Beta-4, studied for soft-tissue repair pathways.

£25 /vial
Skin & Repair DefiningLife GHK-Cu

GHK-Cu 50mg

Copper peptide studied for collagen signalling and dermal regeneration research.

£25 /vial
Growth Hormone DefiningLife Ipamorelin

Ipamorelin 5mg

Selective GH secretagogue researched for its clean receptor-binding profile.

£25 /vial
Growth Hormone DL Tesamorelin

Tesamorelin 10mg

GHRH analog studied for its effect on growth-hormone signalling pathways.

£45 /vial
Growth Hormone DefiningLife CJC-1295

CJC-1295 5mg

Long-acting GHRH analog, a mainstay of endocrine signalling research.

£30 /vial
Growth Hormone DefiningLife CJC-1295 (DAC)

CJC-1295 (DAC) 5mg

DAC-modified variant researched for extended half-life in GHRH signalling studies.

£45 /vial
Growth Hormone DefiningLife IGF-1 LR3

IGF-1 LR3 1mg

Long-acting analog of IGF-1 studied in cellular growth-signalling research.

£40 /vial
Weight Management DefiningLife AOD-9604

AOD-9604 5mg

Synthetic hGH fragment (176–191), researched for lipolytic activity.

£35 /vial
Weight Management DefiningLife SLU-PP-332

SLU-PP-332 10mg

ERR agonist studied as an exercise-mimetic in metabolic research.

£40 /vial
Weight Management DefiningLife 5-Amino-1MQ

5-Amino-1MQ 5mg

NNMT inhibitor at the frontier of metabolic and longevity research.

£40 /vial
Metabolic DefiningLife MOTS-c

MOTS-c 10mg

Mitochondrial-derived peptide studied in metabolic and longevity research.

£25 /vial
Weight Management DefiningLife Retatrutide

Retatrutide 60mg

Triple-receptor agonist (GLP-1/GIP/glucagon) — the leading edge of metabolic research.

£180 /vial
Longevity DefiningLife Epitalon

Epitalon 10mg

Synthetic tetrapeptide studied in telomerase and cellular-ageing research.

£25 /vial
Longevity DefiningLife NAD+

NAD+ 1000mg

Coenzyme central to cellular energy metabolism and longevity-pathway research.

£60 /vial
Longevity DefiningLife Glutathione

Glutathione 1500mg

Master antioxidant studied for its role in oxidative-stress research.

£20 /vial
Longevity DefiningLife SS-31

SS-31 10mg

Mitochondria-targeted peptide studied in cellular-energetics research.

£30 /vial
Cognitive DefiningLife Semax

Semax 11mg

Nootropic peptide studied for neurotrophic and cognitive-pathway research.

£25 /vial
Cognitive DefiningLife Selank

Selank 11mg

Anxiolytic peptide studied for its effect on neuroimmune signalling.

£25 /vial
Cognitive DefiningLife DSIP

DSIP 10mg

Delta sleep-inducing peptide studied in sleep-regulation research.

£25 /vial
Immune DL Thymosin A-1

Thymosin Alpha-1 10mg

Thymic peptide with decades of immune-signalling research behind it.

£40 /vial
Immune DL Thymalin

Thymalin 10mg

Thymic extract peptide studied for its role in immune-system regulation research.

£30 /vial
Hormonal DL Kisspeptin

Kisspeptin 5mg

Neuropeptide studied for its role in reproductive-hormone signalling.

£35 /vial
Immune DefiningLife KPV

KPV 5mg

Tripeptide fragment of alpha-MSH studied for anti-inflammatory research.

£25 /vial
Hormonal DefiningLife PT-141

PT-141 10mg

Melanocortin receptor agonist studied in sexual-response research.

£25 /vial
Accessory DefiningLife Bacteriostatic Water

Bacteriostatic Water 10ml

Sterile bacteriostatic water for reconstituting lyophilized research peptides.

£5 /vial

No compounds match that search.

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Most pens are priced below. Retatrutide, Tirzepatide, Semaglutide and the generic Growth Hormone pen are priced on request — fill out the contact form or message us on LINE for a quote.
All
Blends
Growth Hormone
Immune & Hormonal
Longevity
Metabolic
Recovery
Weight ManagementPen DefiningLife Retatrutide pen

Retatrutide 20mg

Pre-dosed pen of the triple-receptor agonist (GLP-1/GIP/glucagon).

Enquire /pen
Weight ManagementPen DefiningLife Tirzepatide pen

Tirzepatide 40mg

Dual GIP/GLP-1 receptor agonist in a pre-dosed research pen.

Enquire /pen
Weight ManagementPen DefiningLife Semaglutide pen

Semaglutide 5mg

Long-acting GLP-1 receptor agonist, pre-dosed pen format.

Enquire /pen
Growth HormonePen DefiningLife HGH pen

HGH 50iu

Human growth hormone research pen.

90 /pen
Growth HormonePen DL

Growth Hormone Standard

General growth-hormone research pen.

Enquire /pen
LongevityPen DefiningLife SS-31 pen

SS-31 10mg

Mitochondria-targeted peptide, pre-dosed pen.

45 /pen
RecoveryPen DefiningLife BPC-157 pen

BPC-157 20mg

Body Protection Compound, pre-dosed pen.

55 /pen
RecoveryPen DefiningLife TB-500 pen

TB-500 20mg

Thymosin Beta-4 fragment, pre-dosed pen.

65 /pen
Skin & RepairPen DefiningLife GHK-Cu pen

GHK-Cu 100mg

Copper peptide, pre-dosed pen.

50 /pen
HormonalPen DefiningLife Melanotan II pen

Melanotan II 10mg

Melanocortin receptor agonist, pre-dosed pen.

45 /pen
MetabolicPen DefiningLife MOTS-c pen

MOTS-c 20mg

Mitochondrial-derived peptide, pre-dosed pen.

60 /pen
LongevityPen DefiningLife NAD+ pen

NAD+ 1000mg

Cellular-energy coenzyme, pre-dosed pen.

80 /pen
Growth HormonePen DefiningLife Tesamorelin pen

Tesamorelin 20mg

GHRH analog, pre-dosed pen.

95 /pen
Signature BlendPen DefiningLife Wolverine pen

Wolverine 10mg BPC-157 + 10mg TB-500

BPC-157 & TB-500 combined in one pre-dosed pen for recovery research.

75 /pen
Signature BlendPen DefiningLife KLOW pen

KLOW 10mg TB-500 + 10mg BPC-157 + 10mg KPV + 50mg GHK-Cu

TB-500, BPC-157, KPV and GHK-Cu combined for full-spectrum repair research.

95 /pen

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