I had just posted a comment on here about nicotine levels in cigarettes.
I wanted to clarify that there are those larger amounts of nicotine actually in cigs ( 20 +), but it is only about 1 mg. that actually gets absorbed by our bodies.
So please use the 1 mg. as a guide, not 20+. Peace.
First - you should have edited your post because the first one (in all caps) is nothing but a great big lie.
You are correct here when you say that in a combustible cigarette there is 18 mg or more (depending upon the cigarette make and model) of nicotine, but on average most people only actually absorb 1 mg of that amount into their system per cigarette, although that figure does vary person to person, some people absorb much more, some less. 1mg absorption is an approximate average with plenty of room for error.
So First - what makes you think vaping is necessarily a more efficient nicotine delivery system? Any scientific evidence that 100% of all nicotine vaped is absorbed into the human body?
(I think not)
Second - when someone vapes 2 - 3 mg of e juice a day (or less in some cases) that 18mg/ml of nicotine is actually very little considering not all of it is getting absorbed into the body coupled with its only 54 mg per day of nicotine to start with - the starting equivalent of 3 cigarettes before nicotine absorption.
So you know, mtl is both not quite as effective as sub ohm vaping where concerns nicotine delivery, as well as not as much consumption of eliquid as a whole, your average mtl vaper vapes around 3 mg a day while your average sub ohm vapor can vape much more daily - averaging between 15-20ml per day.
Depending on how a person vapes, and how much they vape will determine how much nicotine they will need to use - and even in that there is plenty of room for variants depending on how much they used to smoke and how efficient their system is at absorption - ie: how much nicotine did they get into their system from cigarettes. ..
The question was is vaping two and a half tanks worth of ejuice too much... no, it's not too much, and your right the difference between nicotine exposure and nicotine absorption is two different matters entirely - what your missing is that it's two different matters in vaping as well.
The general rule is that if is a person isn't getting nic sick and what they are vaping is getting them through withdrawals and making them feel comfortable without a cigarette then they are in the right spot
for them...
and it sounds like heart problems or not, the OP is in the right spot for him at the moment. In time his vaping habits will likely change naturally - but there is a lot of chemicals and tars in cigarettes that AREN'T in vaping, and he has won a huge battle getting away from the worst of it.
Every one chain vapes at first... some never stop, many do - naturally.