ill speak of just them because its all i have experience with, tho i suspect all nrt to have similar results. the first week of my quit i would have disagreed because i thought they were the best thing since sliced bacon. at times it even seemed that they were even better than cigs. i knew there was no way id go back to smoking as long as these babies were around. but thats just it they only work "at times" and the longer you wear them the fewer the "times" come.
the patch i was using, 21mg delivered over 24hrs. this would be perfect if i were a pack a day vegtable that didnt sleep. the acid trip dreams were cool at first but got annoying by second week. probably because one cant sleep well while having nicotine constantly injected. so your choice is to remove it at night and suffer withdrawl for 3hrs at the start of every day. (estimated time it takes for nicotine to absorb through skin from patch) or keep it on all night and sleep very restless because of the constant injection of nicotine. not even smokers ingest nicotine while sleeping. i started removing the patches at night on the second week because the restless sleep was catching up.
on another note, the constant supply would be great if i were a vegtable and never did anything but dammit i quit smoking so im gonna enjoy life. the problem is that as we smokers/ex-smokers know, we smoked more or less depending on situations and activites. there are times when the patch is giving you nicotine when you normally wouldnt be smoking it (like sleeping or exercising) hense those times, its gorging you out and probably making you more additced. then at stressful/panic times when you would normally smoke more, the patch is worthless because it cant produce the amount you need, resulting in withdrawl until the situation is over and your back into the vegative state lol. my second week on the patch was a real rollercoaster times i would be overdosed on nicotine while othertimes in constant withdrawl, depending on the days activites. by the end of the second week the patch were not able to keep up, i think my body had done built up a tollerence and i was still putting my new patches on at the same time every day but would just leave the old one on just for the hell of it. hoping to squeeze every ounce out i could. really i was just trying to double up. last day i used the patch, i realized it wouldnt be long before the "step down" to lower dose patch. i looked at myself and was like wtf, lol .i had 3 patches on at the time and i needed to step down? it was then i realized what was going on as i stated above about the constant withdrawls or overdose. so then i took them all off and decided to **** the patches. and get this, the next few days were a hell of alot easier that the past few was. after the first few days of removing the patch ive felt really great. im really glad that im nicotine free now and stopped the patch nonsense because it was making things worse not better.
anyways just food for thought on anyone considering. this was my experience you might have better luck with them.