Is it permissible to use nicotine patches to quit smoking, and does that affect prayer and fasting?

Nicotine is a toxic organic compound and an addictive substance found in tobacco. Nicotine patches are adhesive rubber strips containing diluted nicotine, which are absorbed through the skin to alleviate withdrawal symptoms in smokers attempting to quit. They are applied to the upper arm for 16 hours daily. The use of nicotine patches is permissible unless they cause demonstrable harm, and they do not invalidate the fast of a fasting person, according to the resolution of the Islamic Fiqh Academy; this is because they enter the body through skin absorption. Furthermore, they do not affect the validity of prayer and are only removed when performing a ritual bath (ghusl (definition)) for major impurity (janabah (definition)).