Hello Aaron,
I am using VIP regularly as it is a multi-function peptide.
- Circadian rhythm dysfunction
- Gut rehab
- Immune system dysfunction/ CIRS
- Mold treatment
There are animal and mechanistic studies showing cardiac benefits. In the heart, VIP has reactivity in the coronary arteries and veins, sinoatrial node, atrioventricular node, atrium, inter-atrial septum, and ventricles (right ventricle>left ventricle)
Delivery is challenging via a nasal route. I try to push doses as much as tolerated. Do not use later than 11 am or it will affect sleep. I do not do check labs.
It improves cornary artery vasodilation, fat oxidation ( via PPAR-gamma stimulation), and increases heart rate (via SA and AV node stimulation). VIP release is increased during coronary artery occlusion to help improve coronary blood flow and improve free radical scavenging. This reduces myocardial reperfusion injury. There are also some studies looking into it’s use in myocarditis.
- Cardiovascular Research 49 (2001) 27–37, Review Vasoactive intestinal peptide: cardiovascular effects, Robert J. Henning , Darrell R. Sawmiller