Nicotine replacement therapy side effects
Pro Research Analysisby 
Searched over 200M research papers
Common Side Effects of Nicotine Replacement Therapy (NRT)
Nicotine replacement therapy (NRT) is widely used to help people quit smoking, but it can cause several side effects. The most frequently reported side effects are related to oral health, including mouth and throat irritation, oral soreness, aphthous ulcers (mouth ulcers), and dryness. These symptoms are especially common with nicotine gum and nasal spray forms of NRT, which are also linked to taste disturbances and gastric reflux or vomiting Sivaramakrishnan2024Sivaramakrishnan2022Manakil2020+1 MORE. Surveys and meta-analyses consistently show that current and former NRT users report a higher incidence of these oral symptoms compared to those who have never used NRT Sivaramakrishnan2022Manakil2020.
Systemic and Serious Adverse Effects
Most studies indicate that serious adverse health effects from NRT are rare. There is limited evidence suggesting a lack of association between NRT use and serious conditions such as cardiovascular disease, cancer, or stroke. The only serious adverse event identified in the literature was an increase in respiratory congenital abnormalities in one study, but overall, the evidence for serious risks is weak or inconclusive . In adolescents, the most common side effects are mild and include skin irritation, headaches, and nausea .
Psychological and Emotional Side Effects
Some individuals may experience more side effects from NRT due to psychological factors. People with higher anxiety sensitivity and difficulties with emotion regulation are more likely to report side effects from NRT, particularly during the first week of use. This suggests that emotional and psychological support may help reduce perceived side effects and improve adherence to NRT .
NRT Side Effects in Critically Ill Patients
In intensive care unit (ICU) settings, the safety of NRT is still debated. Some studies report potential adverse effects such as increased agitation and delirium, while others do not find a significant increase in adverse events. The evidence is not strong enough to draw firm conclusions, and more research is needed to clarify the safety profile of NRT in critically ill patients Kanan2024Aljuhani2024.
Importance of Dental and Medical Monitoring
Given the prevalence of oral side effects, regular dental check-ups are recommended for patients using NRT. Dentists and healthcare providers should be aware of these risks and monitor patients for oral symptoms, especially when using gum or nasal spray forms of NRT Sivaramakrishnan2024Sivaramakrishnan2022Manakil2020+1 MORE. Education for healthcare professionals on managing and preventing these side effects is also important.
Conclusion
Nicotine replacement therapy is generally safe, with most side effects being mild and related to oral health, such as mouth irritation, ulcers, and taste disturbances. Serious adverse effects are rare, but psychological factors can increase the likelihood of experiencing side effects. Regular dental and medical monitoring is recommended to manage and prevent these issues, and further research is needed to clarify the risks in special populations such as adolescents and critically ill patients.
Sources and full results
Most relevant research papers on this topic