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Specimen Atlas of Research Peptides81 plates · MIT
Side-by-side · Research reference

KPVvsVIP

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

AAnimal-StrongAUTO-DRAFTED13/39 cited
BPhase 3HUMAN-REVIEWED9/42 cited
KPV
α-MSH C-terminal · Anti-inflammatory
200–500 mcgDaily doseDalle-Pang 2024
AnimalEvidence levelDalle-Pang 2024
HoursHalf-life (est)
SQ / oral / topical · Local · Daily or 2-3×/week
VIP
Neuropeptide · VPAC1/VPAC2 Agonist · Emergency Use Authorization (COVID-19 ARDS)
IntravenousPrimary routeBrown 2023
ARDSLead indicationUdupa 2025
Phase 3Development stage
IV infusion · Inhaled (investigational)Brown 2023Boesing 2022

01Mechanism of Action

Parameter
KPV
VIP
Primary target
Intracellular targets bypassing melanocortin receptors (proposed)Dalle-Pang 2024
VPAC1 and VPAC2 G-protein-coupled receptorsUdupa 2025
Pathway
NF-κB inhibition + cytokine modulation (TNF-α, IL-1β, IL-6) → reduced inflammationDalle-Pang 2024
VIP → VPAC1/VPAC2 activation → cAMP elevation → Pulmonary vasodilation + epithelial protection
Downstream effect
Anti-inflammatory action without α-MSH pigmentation effects; gut barrier protectionDalle-Pang 2024
Anti-inflammatory cytokine modulation, alveolar-capillary membrane stabilization, pulmonary smooth muscle relaxation, reduced neutrophil infiltration
Feedback intact?
No melanocortin receptor binding
Yes — exogenous VIP acts as physiological agonist
Origin
Synthetic tripeptide; the C-terminal Lys-Pro-Val residues of α-MSH (residues 11-13)Dalle-Pang 2024
Endogenous 28-amino-acid neuropeptide; synthetic analogue (aviptadil) identical to natural VIP
Antibody development

02Dosage Protocols

Parameter
KPV
VIP
Standard dose
200–500 mcg / day SQ or oralDalle-Pang 2024
Frequency
Daily or 2–3× per week
Lower / starter dose
100 mcg / day
Evidence basis
Animal-strong + emerging clinical data in IBDDalle-Pang 2024
Phase 3 RCT (TESICO)Brown 2023
816-patient randomized controlled trial in COVID-19 ARDS.
Duration
4–8 weeks per cycle
Reconstitution
Bacteriostatic water (SQ form)
Lyophilized powder reconstituted with sterile diluent per protocol
Timing
No specific time; often taken with / before meals (oral)
Half-life
Hours (estimated; rapid tissue uptake)
~2 minutes (plasma)
Rapid clearance necessitates continuous infusion.
Intravenous (ARDS protocol)
60–90 mcg/kg/day via continuous infusion
TESICO trial protocol for COVID-19 ARDS.
Infusion duration
12-hour continuous IV infusion dailyBrown 2023
Inhaled (investigational)
Variable dosing under clinical trial protocolsBoesing 2022
Delivered via nebulizer for direct pulmonary deposition.
Treatment duration
3–14 days (acute ARDS)

04Side Effects & Safety

Parameter
KPV
VIP
Injection site reaction
Mild irritation
GI symptoms
Rare nausea (oral form)
Nausea, diarrhea (VIP is endogenous GI peptide)
Pigmentation
None (unlike full α-MSH)Dalle-Pang 2024
Long-term safety
Limited human data
Pregnancy / OB
Avoid — insufficient data
Hypotension
Transient vasodilation-related blood pressure drop
Tachycardia
Reflex tachycardia secondary to vasodilation
Infusion site reactions
Erythema, phlebitis (IV administration)
Overall tolerability
Well-tolerated in Phase 3 trials; adverse event profile comparable to placebo
Absolute Contraindications
KPV
  • ·Pregnancy / breastfeeding
VIP
  • ·Known hypersensitivity to aviptadil or formulation components
Relative Contraindications
KPV
  • ·Active autoimmune disease (theoretical)
VIP
  • ·Severe hypotension or shock states (monitor blood pressure)
  • ·Pregnancy — insufficient safety data

05Administration Protocol

Parameter
KPV
VIP
1. Reconstitution
Add 1 mL bacteriostatic water to vial per labelling.
Reconstitute lyophilized aviptadil powder with sterile diluent per manufacturer protocol. Inspect solution for particulates — should be clear and colorless.
2. Form
SQ injection (acute), oral capsule (chronic / gut), topical for skin indications.
Administer as continuous 12-hour intravenous infusion via central or peripheral line. Use infusion pump for precise dosing (60–90 mcg/kg/day divided over infusion duration).
3. Timing
Morning preferred; oral form taken with / before meals.
Monitor blood pressure, heart rate, and oxygenation continuously during first infusion. Assess for hypotension and adjust infusion rate if needed.
4. Storage
Lyophilised: room temp, light-protected. Reconstituted: refrigerate ≤30 days.
Deliver via jet or mesh nebulizer per clinical trial protocol. Patient seated upright, normal tidal breathing for 10–15 minutes.
5. Needle
29–31G insulin syringe (SQ form).
Store lyophilized powder at 2–8 °C, light-protected. Reconstituted solution: use immediately or within 24 hours if refrigerated.

06Stack Synergy

KPV
+ BPC-157
Strong
View BPC-157

KPV (NF-κB inhibition, cytokine reduction) + BPC-157 (VEGF-driven angiogenesis, tissue regeneration) form the classic gut-healing stack. KPV reduces inflammatory drive; BPC-157 promotes mucosal repair. Anecdotally favoured for IBD, ulcerative colitis, and post-surgical gut recovery.

KPV
200–500 mcg oral · daily
BPC-157
250–500 mcg oral or SQ · daily
Primary benefit
Combined anti-inflammation + mucosal repair for gut conditions
VIP
— no documented stacks