Originally Posted by skitzo

I dont know what yohimbe is lol

Originally Posted by go4kj

Very common side effect of any nitric oxide containing product is headache. It is a vasodilator, which means that it dilates blood vessels. More blood rushes to your head, hence the headache. I used to get them when I initially started using NO containing products, but I don't get the headaches anymore.


I loved the workouts I got with Nano vapor, but couldn't deal with the diarrhea, so I stopped taking it.

Try cutting back to one scoop, incase you are taking more than one and see what happens. Your body may take some time to adapt.

Originally Posted by go4kj

It's NOT a drop in blood pressure that causes the headache. The blood vessels dilate and more blood flows through them. It is the increased blood flow that causes the headaches. It is the same principle by which Viagra works. Blood vessels engorge & dilate "down there" through the NO pathway(also the cGMP pathway) and cause the woody. Indeed, headaches are a common side effect of Viagra also.

Originally Posted by go4kj

Here is a link from this forum: This topic has been discussed before

NO Information - Bodybuilding.com Forums

Originally Posted by Merkaba

All I need is some caffeine and I'm good. Ya'll be careful

Originally Posted by go4kj

NO can cause headaches. It is well documented and studied. Could other things be making it worse? absolutely. However, the statement that NO cannot cause headaches is false.


Vasodilation is of the arteries and NOT veins. The blood flow through the arteries actually depends on several factors including Cardiac output and total peripheral resisitance, in addition to the mean arterial pressure. Most NO containing products contain stimulants which increase heart rate which increases cardiac output(Cardiac output= heart rate X stroke volume) and the NO causes vasodilation of the blood vessels(arteries) in the brain which causes the increased blood flow and hence the headache. I agree, that you have to increase the heart rate to get the headache. Any kind of exercise will do that and you don't need stimulants for that. However, the stimulants will make it worse.

Here is another link:

Nitric Oxide

Originally Posted by skitzo

So i try nano vapor for the first time on monday and im doing dumbbell bench, while struggling to get the last rep up i may have held my breath but when my spotter helped me to the top and i dropped the bells i got an instant severe head ach..3 advils to help it..i couldent finish the work out..i took tuesday off and today i went back taking the nano vapor once again..i begin my work out and twords the last sets of incline db bench the headach begins to return so i stopped short and went home...now i dont know what to blaim the nano vapor or mondays poor technique that may have fucked up something in my head..either way im thinking of taking the rest of the week off.. if anyone has any imputs please feel free..