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Limited human dataFDA 503A Category 1

VIP dosage

Also known as: Vasoactive intestinal peptide · Vasoactive intestinal polypeptide · Aviptadil · RLF-100

Updated 28 sources

Every VIP protocol on file, 15 in all, labelled by where each number came from.

VIP dosage by goal

Grouped by goal. Each protocol shows the amount, how often, cycle and rest as the source states them, with every titration step.

CIRS4

CIRS, nasal spray (trial dose)

Amount
50 mcg
How often
Four times a day
Route
Nasal, nasal spray
Cycle
At least 18 months in the trial

Who: 20 adults with refractory CIRS after water-damaged building exposure, open-label, single clinic

Note: Patients had already completed the earlier protocol steps. Doses were later titrated down from four a day to none to find the minimum effective dose, then back up. Lipase did not rise and nobody dropped out for side effects. No placebo group.

CIRS, clinic nasal protocol

Amount
50 mcg
How often
4 to 8 sprays a day, alternating nostrils
Route
Nasal, nasal spray

Timing: First dose given in clinic, with lipase checked before and shortly after.

Note: Started only after mold exposure is removed and earlier steps are done. Some severe cases ran higher daily totals under closer monitoring.

CIRS, nasal spray (community)

Amount
50 mcg
How often
4 to 8 sprays daily
Route
Nasal, nasal spray
Cycle
30 days or more

Note: Reported as the final step of the Shoemaker protocol, after passing VCS testing and clearing MARCoNS.

CIRS, nasal both nostrils (guide)

Amount
100 mcg
How often
Four times a day, one 50 mcg spray in each nostril
Route
Nasal, nasal spray
Cycle
3 to 6 months

Timing: With breakfast, lunch, dinner and at bedtime.

Note: This guide calls it the Shoemaker standard, but the 2013 trial paper gave 50 mcg per dose, half this amount.

Nasal spray2

Nasal spray, stepped up (community)

Amount
50 to 200 mcg
How often
Twice daily, stepping up every two weeks then monthly
Route
Nasal, nasal spray
Cycle
8 to 12 weeks
Titration steps for Nasal spray, stepped up (community)
WhenDose
Weeks 1 to 250 mcg
Weeks 3 to 4100 mcg
Weeks 5 to 12200 mcg

Note: The source says month 2 onward at 200 mcg twice daily; that is shown here from week 5.

Nasal spray, conservative start (guide)

Amount
50 mcg
How often
Once or twice daily
Route
Nasal, nasal spray
Cycle
1 to 2 weeks, then increase

Note: A low start to gauge flushing and other vessel-widening effects.

SubQ2

SubQ, three times weekly then weekly (guide)

Amount
250 to 500 mcg
How often
250 mcg three times weekly to start, then 500 mcg weekly
Route
SubQ, vial (powder)

Note: One guide only, and it gives no length for either phase. It matches no other source; the same site's app users log 50 to 100 mcg per injection.

SubQ (community)

Amount
50 to 100 mcg
How often
Once daily
Route
SubQ, vial (powder)
Cycle
4 to 8 weeks

Note: A less common route in CIRS circles, used for effects beyond the nose and airways. PeptIQ app users most often log 50 to 100 mcg per injection (116 logs), then 100 to 200 mcg (47).

Other protocols: injected5

SubQ start (guide)

Amount
50 mcg
How often
Once daily
Route
SubQ, vial (powder)
Cycle
1 to 2 weeks

Note: The guide puts lipase checks before and during any subQ use.

SubQ standard (guide)

Amount
100 mcg
How often
Once or twice daily
Route
SubQ, vial (powder)
Cycle
Ongoing; no standard cycle or washout

Note: 100 mcg twice daily is the most discussed subQ plan. Divided doses are common because the half-life is so short.

SubQ higher dose (guide)

Amount
200 mcg
How often
Once or twice daily
Route
SubQ, vial (powder)
Cycle
Ongoing

SubQ clinic-style (guide)

Amount
200 mcg
How often
Five days a week
Route
SubQ, vial (powder)
Cycle
Ongoing

SubQ range (guides)

Amount
50 to 200 mcg
How often
Daily, once or twice
Route
SubQ, vial (powder)
Cycle
4 to 12 weeks

Other protocols: other, other form2

Pulmonary hypertension (single inhaled test dose)

Amount
100 mcg
How often
One inhaled dose
Route
Other, other form

Who: 20 adults with pulmonary hypertension during right-heart catheterisation

Note: Nebulized aviptadil. The lung-vessel widening was small and short-lived; systemic blood pressure did not change.

Erectile dysfunction, with phentolamine (trial dose)

Amount
25 mcg
How often
As needed, up to 12 injections over 6 months in the trial
Route
Other, other form

Who: Men with mainly nonpsychogenic ED, multicentre double-blind trial

Note: Injected into the penis together with 1 or 2 mg phentolamine; VIP alone is not the product. 75% responded to the 1 mg combination vs 12% on placebo. This is the Invicorp formulation.

Doses shown are what sources report, labelled by origin. Not medical advice.

VIP dosage chart by vial size

Units to draw for the doses sources cite most, at every vial size and water volume.
VIP: concentration and U-100 syringe units for each vial size and water volume
WaterStrength50 mcgdose, units100 mcgdose, units200 mcgdose, units
5 mg vial
2 mLCompetitor guide2.5 mg/mL20.02 mL40.04 mL80.08 mL
10 mg vial
3 mLCompetitor guide3.333 mg/mL1.50.015 mL30.03 mL60.06 mL
Units are on a U-100 insulin syringe (100 units = 1 mL). U-50 and U-30 barrels read the same units.Water volumes from

Doses shown are what sources report, labelled by origin. Not medical advice.

Calculate with this peptideYour vial, your water, your dose: VIP in syringe units, with the math shown.

Mixing VIP

Diluent: Bacteriostatic water

Water volumes sources use: 2 mL, 3 mL

Applies to research vials only; the nasal spray comes ready-made from a pharmacy. Guides disagree on diluent: one says bacteriostatic water only, another lists sterile saline. Doses are tiny, so draws are only a few units.

VIP dosage questions

What is the VIP nasal spray dose?

In the 2013 CIRS trial, 20 patients took 50 mcg four times a day by nasal spray for at least 18 months. Clinic protocols describe 50 mcg per spray, often 4 to 8 sprays a day in alternating nostrils, with the first dose given in clinic.

What is the VIP subcutaneous dose?

Guides describe 50 to 200 mcg per injection, and 100 mcg twice daily is the most discussed plan. PeptIQ app users most often log 50 to 100 mcg per injection. No trial has tested subQ VIP for these uses.

How do you reconstitute a VIP vial?

One guide mixes a 10 mg vial with 3 mL of bacteriostatic water for about 3.33 mg/mL, so 50 mcg is 1.5 units, 100 mcg 3 units and 200 mcg 6 units on a U-100 syringe. Such small draws are hard to measure, so check with the calculator.

How long does mixed VIP last?

Guides disagree: 7 to 14 days, 28 days, 3 to 4 weeks or 30 days in the fridge. Pharmacy nasal sprays carry their own expiry date.

Sources for these doses

11 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.

Vendor guide1

  1. VIP (10 mg) product pageVendor product page · checked Oct 24, 2026

Competitor guide5

  1. VIP peptide dosing guidepeptidedosingprotocols.com · checked Oct 24, 2026
  2. VIP protocol guidepathtopeptides.com · checked Oct 24, 2026
  3. VIP (vasoactive intestinal peptide) reportoutliyr.com · checked Oct 24, 2026
  4. VIP compound pagepeptiq.io · checked Oct 24, 2026

Community-reported1

  1. VIP community protocols and anecdotal reportspeptideprotocolwiki.com, via a competitor guide · checked Oct 24, 2026

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