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.

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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.

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.