What are the harmful effects of nicotine patches (when used to increase focus and memory) for a non smoker?

Nicotine. There is a lot of evidence that pure nicotine is not harmful. Well to a point, that does not mean it's not addictive. There is an underlying question why anyone would need this support from this drug?
ADD and Nicotine. Using the nicotine patches is safer than smoking cigarettes, and has the same "awakening" or "improved concentration" that smoking gives to many patients. There are other medications for concentration that affect the blood vessels less than nicotine, and would be safer for these with arterial blockages, or damage, or patients who are older.