Leader Nicotine 2mg Polacrilex Gum Stop Smoking Aid, Ice Mint, 20 Ct Smoking Cessation. Nicotine chewing gum is Healthcare concern sugar-free and comes in two strengths: 2mg for people who have smoked fewer than 25 cigarettes a day and 4mg for those who have smoked 25 or more cigarettes a day. When making a quit attempt behavioral therapy, advice and support will normally improve the success rate. Those who have quit smoking but are having difficulty discontinuing Nicorette 2 mg Gum are recommended to contact their pharmacist or doctor for advice. Although plasma nicotine levels equivalent to those following cigarette smoking may be obtained by chewing at least 20 pieces of 2 mg nicotine gum daily, the slower rate of absorption may limit its therapeutic value as a substitute for cigarette smoking.