I was just thinking about the first day I used my new PV-3 weeks ago tomorrow. I had tried Blu a few days before and hated them but was out of money till payday so started wearing one of my patches. Saturday came and I went and got my first eGo CE6 and two juices at 16g strength. I went home and started charging the battery and was very anxious to try this. I had not bought a pack of analogs so was still wearing patch. Once it was charged and filled, I tried it and instantly loved it. After just a few "hits" I started feeling very sick, shaky, cold sweat etc. and was freaking out. I mean it was bad. About then I looked down and realized I still had on my patch-24mg strength. So, basically, I was getting 42mg of nicotine. I ripped that patch off quick and didn't vape until I felt better. I had never experienced nicotine OD before but it is not pretty. Never want to feel that again. 
It's a funny story but it is also a warning to people. Nicotine OD is very serious and very fast, do not take the warnings lightly. It worked out fine for me but it could have been a very bad situation. I also started noticing that I was getting very mild headaches every day and thought it might be a side effect. What I have learned is that this too is a slight OD. What's happening is, even though I'm only using 18mg juices, I tend to "hit" it more often than I would have smoked regulars. In the past I'd smoke one cigarette an hour usually. I'm vaping every couple of minutes sometimes, just a couple of hits but it's enough to cause the headaches. So from now when I make my juice orders, I'm going to lower my mg and see if that helps. The headaches aren't bad, just enough to know they're there but still don't want them.
Just some friendly advice and a little laugh
It's a funny story but it is also a warning to people. Nicotine OD is very serious and very fast, do not take the warnings lightly. It worked out fine for me but it could have been a very bad situation. I also started noticing that I was getting very mild headaches every day and thought it might be a side effect. What I have learned is that this too is a slight OD. What's happening is, even though I'm only using 18mg juices, I tend to "hit" it more often than I would have smoked regulars. In the past I'd smoke one cigarette an hour usually. I'm vaping every couple of minutes sometimes, just a couple of hits but it's enough to cause the headaches. So from now when I make my juice orders, I'm going to lower my mg and see if that helps. The headaches aren't bad, just enough to know they're there but still don't want them.
Just some friendly advice and a little laugh