VIP (Vasoactive Intestinal Peptide) — Dosing, Cycles, Half-Life & Side Effects
VIP (Vasoactive Intestinal Peptide) is a regulatory peptide with a half-life of 1-2 minutes (very short). Neuropeptide with anti-inflammatory, immunomodulatory, and vasodilatory properties. Investigated for chronic inflammatory conditions, mold illness (CIRS), and as a pulmonary vasodilator. This page is educational harm-reduction reference compiled from peer-reviewed literature — not medical advice, not an endorsement, not a recommendation to use. Consult a licensed clinician before any decision.
Quick Facts
| Class | Regulatory Peptides |
|---|---|
| Half-life | 1-2 minutes (very short) |
| Hepatotoxicity | None |
| Suppression | 0/10 |
Typical Dosing Ranges
Common dose range: 50mcg intranasal 4x/day
Cycle length: 4-12 weeks
Dose ranges are compiled from published pharmacokinetic studies and community-reported usage. Where a value is community-reported rather than clinically studied, this page and its structured data flag it. Lower end of any range is always the safer starting point.
Stacking Considerations
- No structural stacking blockers. Standard harm-reduction rules apply: minimize total androgen load, minimize oral exposure, and monitor bloodwork.
PCT Requirements
- Never stack two SERMs. Extend a single SERM (tamoxifen OR enclomiphene/clomiphene) rather than combining.
- Use the cycle planner to generate a full protocol based on your complete stack, not this compound alone.
Side Effect Profile
- Extremely short half-life
- Requires nasal spray or frequent injection
- Limited clinical validation
- Can cause flushing and headache
- Expensive
Known Interactions
No compound-specific interactions are catalogued in the current matrix. This does not mean no risk exists — it means there is no curated pairwise entry. Browse the full interaction matrix to cross-reference manually.
Related compounds
Monitoring (Bloodwork & Vitals)
- Comprehensive metabolic panel (baseline, mid-cycle, post-cycle)
- Lipid panel (total cholesterol, HDL, LDL, triglycerides)
- CBC (hemoglobin, hematocrit — watch for erythrocytosis)
- Sex-hormone panel (Total T, Free T, Estradiol sensitive, SHBG, LH, FSH)
- Blood pressure (weekly self-check; flag systolic >140 or diastolic >90)
Baseline bloodwork is recommended before any cycle. Discontinue if liver enzymes exceed 3× upper limit of normal or if hematocrit exceeds 54%.
Frequently Asked Questions
What is the half-life of VIP (Vasoactive Intestinal Peptide)?
VIP (Vasoactive Intestinal Peptide) has a half-life of approximately 1-2 minutes (very short). This figure is used to determine injection frequency (for esters) and post-cycle clearance timing.
What is the typical dose range for VIP (Vasoactive Intestinal Peptide)?
Commonly reported ranges for VIP (Vasoactive Intestinal Peptide): 50mcg intranasal 4x/day. Cycle length: 4-12 weeks. These are compiled from published studies and community-reported usage — individual response varies and lower end is always preferred.
Does VIP (Vasoactive Intestinal Peptide) suppress natural testosterone?
VIP (Vasoactive Intestinal Peptide) causes minimal suppression of the HPTA axis (score 0/10). PCT may still be advisable depending on stack and duration.
What is VIP (Vasoactive Intestinal Peptide) typically used for?
VIP (Vasoactive Intestinal Peptide) is commonly used for: Chronic inflammatory conditions, CIRS/biotoxin illness, Pulmonary hypertension (experimental). Intended-use context does not imply safety — every use case carries the same underlying pharmacological risks.
Is VIP (Vasoactive Intestinal Peptide) legal?
VIP (Vasoactive Intestinal Peptide) is a controlled substance in many jurisdictions (typically Schedule III in the US when it is an anabolic androgenic steroid). StackItSmart does not provide sourcing information. Possession, import, and use without a prescription carry legal consequences that vary by country and state.
Citations
Disclaimer
StackItSmart is an independent harm-reduction reference. The content above is compiled from peer-reviewed literature and is not medical advice, not an endorsement, and not a recommendation to use VIP (Vasoactive Intestinal Peptide). Performance-enhancing compounds carry legal, endocrine, cardiovascular, and hepatic risks. Consult a licensed clinician before any decision. StackItSmart does not provide sourcing, procurement, or dosing prescriptions.