When you stop smoking, especially cold turkey (i.e. without any aids), there are certain symptoms of physical withdrawal that might be experienced. These can include lethargy, dizziness, nausea, headaches, aching joints, constipation, queasiness, short temper, sleeping problems, food craving and stomach cramps. It is these symptoms that can make people give up giving up. NicoBloc helps to reduce or manage these symptoms.