Will smoking cessation products still cause an increase in blood pressure?
Stopping cold turkey certainly can make a lot of other things about your life unpleasant but it shouldn’t make your blood pressure go up. Nicotine is a stimulant, and as you said is what causes the increase of blood pressure. So the patch could possibly still affect your blood pressure. Also if you’re only smoking half a pack a day you could end up adding more nicotine to your system if you use the patch or chew the gum, which would really cause a spike in blood pressure. It appears as though you’re female [though avatars are not always accurate] and if you’re on any form of estrogen/progesterone based birth control, the combination of that with nicotine could also give you high blood pressure.