Niquitin 4mg Nicotine Mini Mint Lozenges (20). NiQuitin Minis are used to help people stop smoking. This type of treatment is called Nicotine Replacement Therapy or NRT.. NiQuitin Mini 2mg Mint Lozenges are for smokers who smoke 20 cigarettes or less a day.. NiQuitin Mini 4mg Mint Lozenges are for smokers who smoke more than 20 cigarettes a day.