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Verified Lab Results
Finished in the USA
Research Use OnlyMetabolic Peptides · Mitochondrial Peptides
$72.00$36.00Save 50%
SHB (Endure) is a nine-compound amino acid research blend that combines L-arginine, L-ornithine, L-citrulline, L-lysine, L-glutamine, L-proline, L-taurine, L-carnitine and NAC in a single vial, and it has been examined in preclinical models covering nitric oxide pathway activity, recovery, vascular and antioxidant signaling research. It is a laboratory chemical blend finished in the USA, not a drug, supplement or cosmetic.
Real Peptides supplies SHB Endure in the vial format and component quantities listed on this page. Every batch is tested by an independent laboratory, and the certificate of analysis for the current lot is published on the lab results page so it can be reviewed before purchase. Orders ship from Florida and California facilities within 24 hours, strictly for research use.
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$36.00
SHB (Endure) · Default
$36.00$72.00
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For Research Use Only. Not for human consumption or therapeutic treatment.
Finished in the USA
Endure is a 9-compound amino acid research blend studied in preclinical models for nitric oxide pathway activity, recovery, vascular research, and antioxidant signaling. Each vial contains the following actives:
✓ L-Arginine 110mg — nitric oxide synthesis substrate
✓ L-Ornithine 110mg — urea cycle and ammonia clearance
✓ L-Citrulline 120mg — sustained NO substrate via arginine recycling
✓ L-Lysine 70mg — collagen synthesis amino acid
✓ L-Glutamine 40mg — recovery and intestinal cell research
✓ L-Proline 60mg — collagen and connective tissue research
✓ L-Taurine 60mg — antioxidant and cellular hydration
✓ L-Carnitine 220mg — mitochondrial fatty acid transport
✓ NAC (N-Acetyl Cysteine) 75mg — glutathione precursor, antioxidant pathway
Each batch is third-party tested, and formulated for laboratory research.
Endure is a 9-amino-acid research blend formulated around three coordinated pathway groups: nitric oxide research substrates (arginine, ornithine, citrulline), collagen synthesis substrates (lysine, proline), and recovery and antioxidant cofactors (glutamine, taurine, NAC, L-carnitine). Endure combines these into a single research blend supplied in a 10ml vial, giving researchers a multi-pathway tool across vascular, recovery, structural protein, and antioxidant research models.
Researchers choose Endure when studying nitric oxide signaling, vascular research models, collagen synthesis, recovery pathways, and antioxidant cofactor activity. Rather than sourcing nine individual amino acids and compounding them, Endure delivers a pre-formulated, third-party-tested blend in vial format. with batch-specific testing, Endure provides consistent, reproducible substrate availability across performance and recovery research designs.
Most amino acid research blends focus on a single pathway — either NO substrates or recovery aminos or collagen substrates. Endure combines all three pathway groups into one formulation, plus adds NAC for glutathione research and 220mg of L-carnitine for mitochondrial energy research. That makes Endure one of the most comprehensive amino acid research blends available, designed for multi-endpoint study protocols rather than single-pathway research. Often paired with Radiance for combined amino-substrate plus cofactor research designs.
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