Why can nicotine replacement therapy reduce cravings and withdrawal symptoms?

Nicotine replacement therapy (NRT) helps reduce cravings and withdrawal symptoms by providing the body with controlled, steady doses of nicotine without the harmful toxins, such as tar and carbon monoxide, found in combustible tobacco products.12

When a person stops using tobacco, the body—which has developed a physical dependence on nicotine—experiences withdrawal symptoms like irritability, anxiety, and intense cravings as it adjusts to the absence of the substance. NRT products, such as patches, chewing gum, or nasal sprays, deliver nicotine into the bloodstream more slowly and at lower concentrations than tobacco products. By maintaining these stable levels, NRT effectively alleviates the physiological discomfort of withdrawal and suppresses cravings, allowing individuals to gradually discontinue their nicotine use while avoiding the health hazards associated with smoking.321