Get yourself some wta juice and you'll have all the MAOI activity you need from the harmine in the tobacco leaves. The WTA juices contain a full extraction of all the alkaloids in the tobacco leaf. They will give you the same effects of cigarette smoking, like "sense of well-being" and "potentiation of other substances" without the carcinogens. WTA (whole tobacco alkaloid) juice is always an option.
Some of us need this type of juice to go on with our daily lives. For instance, this is beth. beth is 65 years old, and she has fibromyalgia. beth smoked cigarettes all her life. now she has a severely painful illness that requires her to take many pain killing pills each day. beth adjusts to the pain killing pills and does well with them. beth notices the pain relieving properties of her pills is slightly more pronounced when beth smokes a cigarette. beth enjoys smoking cigarettes when her fibromyalgia is acting up, because the cigarettes relieve her pain just long enough for her to get up and out of bed. beth begins coughing and she decides she wants to quit smoking. she hears of e-cigarettes and personal vaporizers. beth picks up an eGo battery and charger, a set of clearomizer, some coils, and a juice from her local vape supply shop. "yum!" beth says.. "bluberry cheesecake!" beth is pleased with the throat hit the very 1st time she fires her PV up. She loves the flavor and the vapor production is great. But its time to take beth's pain pills. Take your pills beth! Beth takes her pills, and instead of lighting up a cigarette to smoke, she fires up her new PV, her eGo and clearomizer with her blueberry cheesecake juice inside. Beth is in a lot of pain as she sits on the coach, waiting for the pills to kick in. once beth is feeling a little better, she decides to fire up her personal vaporizer, in order to hopefully boost the effects of her pain pills, not with cigarettes, but with a nicotine vaporizer. beth takes a big toot off of her little device... then another, and.. another. and, another! How are you feeling now beth? Beth makes a noise similar to that of beeker from the muppets, before yelling: "Oh noo! Why this doesn't feel the same at all! This PV is not increasing the pain relieving effects of my pain medication! In fact, its doing nothing at all for my pain!"
oooh beth, don't start crying now. We aren't finished yet. May I see one of your empty clearomizers? I've got some juice for you to try. "Sure!" beth exclaims. beth takes the new clearomizer and puts it onto her eGo battery, and then takes a toot. "wow.. this reminds me of how cigarettes used to help my pain" beth takes another try with her new liquid. "Wow! Its like a cigarette. It really is! Thanks Plumes!"
So what happened here, is beth switched from an all nicotine juice, to a whole tobacco alkaloid juice. The WTA juice has the MAOI. MAOI stands for monoamine oxidase inhibitor. This inhibits the breakdown of the naturally made chemicals we all have in our brains. Chemicals like seritonin, chemicals like dopamine, endorphins!

So with an MAOI, when you have a neurotransmitter releasing endorphins in your head, the harmine in our tobacco smoke, would go up to our central nervous system, and say STOP! STOP WHAT YOUR DOING! and the endorphins would stop for a moment, almost in disbelief that this guy would come running out into the synapses to ruffle them up a bit. So then the Mr Harmine, (our maoi) he says "OK.. From now on, (well.. until i'm fully digested and my half-life is over lolz) I'm going to lock the main receptor doors and keep all you endorphins on the inside for a little while, okay? I'm working with nicotine, hes the guy that released you guys from the pituitary gland, and now I'm asking that you please just stay inside your receptors for around 3 minutes until I disappear, okay?
so that is what mr. harmine does. and that makes us feel good. nicotine releases endorphins, and an maoi prevents the release and breakdown of those endorphins. so an maoi is important for the mental effects of smoking tobacco leaves. okay? and some people need these endorphins to calm themselves down after a 4 hour shift to lunch break, or beth, who needs them for pain relief. So WTA juices can certainly be beneficial to a broad spectrum of nicotine vaporizer users.
if you are interested in trying wta juices, please use some google-foo and find out more about it.