Nicotine e-cigarettes can help adults stop smoking more successfully than nicotine patches, gum and other conventional nicotine replacement treatments, according to a major international evidence review.
The findings come as Malaysia weighs tighter action on vaping, including the possibility of a phased nationwide prohibition.
The latest Cochrane review, examined 80 randomised controlled trials involving 29,861 adults who smoked cigarettes. It concluded that nicotine-based e-cigarettes increase long-term quit rates compared with nicotine replacement therapy, or NRT.
For the public, the central message is straightforward. Vaping is not harmless, but regulated nicotine e-cigarettes may be a less harmful alternative for smokers who are trying to stop using tobacco.
Professor Jacqueline Ho of Cochrane Malaysia told PP Health Malaysia (PPHM) that the evidence should not be overlooked in the debate over vaping policy.
“Nicotine-based e-cigarettes are not 100% safe but they are very much safer than tobacco.”
She noted that people who wish to quit smoking are often offered nicotine replacement products such as chewing gum, lozenges, sprays, inhalers and skin patches. The Cochrane evidence suggests nicotine e-cigarettes can perform better for some smokers.
“From this review, there is clear evidence that for people who want to quit smoking, switching from tobacco to a nicotine-based e-cigarette instead of conventional nicotine replacement increases the success rate of quitting by about 50%. In addition, there is no increase in harm from doing this.”
The review found that people using nicotine e-cigarettes were more likely to remain smoke-free for at least six months than those using NRT. Around 10 in 100 people using nicotine e-cigarettes might successfully quit, compared with about six in 100 using conventional nicotine replacement.
That does not mean e-cigarettes work for everyone. Quitting smoking remains difficult. Many smokers need repeated attempts, professional advice, medicines, counselling or support from family and friends. Yet the evidence provides a potentially important option for adults who have struggled with other methods.
The Cochrane review is significant because it evaluates studies using a structured process designed to weigh the quality and consistency of evidence. Researchers reviewed trials from several countries, including the United Kingdom, United States, Australia and New Zealand. The studies involved different e-cigarette devices and different groups of smokers.
Professor Ho said such certainty is unusual in public-health research.
“When all the research is put together in the way the Cochrane does, it is infrequent that we find that treatments work with high certainty and this is one of those infrequent situations.”
The conclusion relates specifically to adults who smoke tobacco cigarettes and use regulated nicotine e-cigarettes to quit. It does not endorse vaping by children, teenagers, non-smokers or people who have never used tobacco. It also does not apply to illicit or altered products, including devices containing synthetic drugs, cannabis-related substances or other unknown ingredients.
This distinction matters greatly in Malaysia.
Malaysia has no nationwide vape ban; vaping is federally regulated under Act 852. In August 2026 the government withdrew its appeal in the liquid-nicotine Poisons Act case, creating legal uncertainty around nicotine vape retail enforcement.
Seven states—Johor, Kelantan, Terengganu, Kedah, Perlis, Pahang and Perak—have imposed sales restrictions or bans, while a phased nationwide ban has been proposed but not enacted
The political pressure comes from genuine concerns. Youth vaping has alarmed parents, teachers and doctors. Disposable devices, sweet flavours, colourful branding and easy retail access may make nicotine products attractive to young people. Reports of illicit vape liquids and devices contaminated with synthetic drugs have heightened fears.
These concerns are separate from the question examined in the Cochrane review: whether regulated nicotine e-cigarettes can assist adult smokers to stop smoking.
Malaysia’s policy challenge is to deal with both issues at once. It must prevent nicotine dependence among young people, restrict illegal substances and enforce product controls. It must also consider whether adult smokers should retain access to regulated vaping products as a cessation or harm-reduction option.
Vaping is not the same as smoking. Cigarettes burn tobacco, creating smoke that contains thousands of chemicals, including many known to cause cancer and cardiovascular disease. E-cigarettes heat a liquid into an aerosol. They do not burn tobacco.
This does not make vaping safe. E-cigarette aerosols may contain nicotine, flavouring chemicals and other substances that can irritate the lungs and airways. Nicotine is addictive. It can be particularly harmful for adolescents, whose brains are still developing. The long-term health effects of vaping are still being studied.
Still, evidence indicates that regulated nicotine e-cigarettes expose users to lower levels of many harmful chemicals than combustible tobacco cigarettes. For an adult who otherwise continues smoking, switching completely from cigarettes to a regulated nicotine vape is likely to reduce exposure to toxic substances associated with smoking-related disease.
The word “completely” is important. The greatest benefit comes when a smoker stops smoking cigarettes altogether. Using both cigarettes and a vape over a long period, often called dual use, may deliver less benefit because tobacco smoke remains part of daily exposure.
E-cigarettes may help because smoking is not simply a nicotine habit. It also involves routine, sensation and behaviour. Smokers may miss holding a cigarette, inhaling, taking a break or having a familiar response to stress. Nicotine patches and gum can reduce withdrawal symptoms, but they do not closely reproduce those aspects of smoking.
A vape can provide nicotine while also replacing some of the rituals and sensory cues linked to cigarettes. For some smokers, that makes it easier to move away from tobacco.
The Cochrane review also compared nicotine e-cigarettes with e-cigarettes containing no nicotine. Nicotine devices probably helped more people to stop smoking. This finding reinforces the view that nicotine delivery is one reason vaping devices may aid cessation.
Researchers did not find evidence of more serious short-term health problems among people using nicotine e-cigarettes than among those using nicotine replacement therapy. Serious adverse events were uncommon in the trials. Minor complaints, such as throat or mouth irritation, were reported in some e-cigarette users. Nausea was sometimes more common among people using conventional nicotine replacement products.
The review did not claim that long-term vaping is harmless. Most studies followed people for up to two years. More research is needed on long-term health effects, newer high-nicotine devices and the best way to help users eventually stop vaping if they wish to do so.
Malaysia therefore faces a policy decision that is less simple than choosing between unrestricted sale and a complete ban.
Professor Ho drew a comparison with controlled medicines in her response to the question posed by PP Health Malaysia (PPHM).
“This Cochrane review needs to be understood in the context of the current situation where on the one hand we have an effective way to get people off tobacco but on the other hand there are moves to try and completely ban vaping due to the use of illicit vaping products.”
“We can’t walk into a store and buy opioid drugs, but a doctor can use them when seen to be beneficial to a patient. Can the use of e-cigarettes for quitting smoking be managed in a similar manner.”
That question may become central to the next stage of Malaysia’s vape debate. A tightly controlled medical or cessation-focused model could, in theory, limit youth access and illegal retail activity while preserving a route for adult smokers who need help to quit. Such a system would require clear regulation, quality standards, age verification, enforcement against unlicensed sellers and accessible stop-smoking services.
It would also need to avoid sending a misleading message. E-cigarettes should not be presented as lifestyle products for young people or non-smokers. They are not risk-free consumer goods. Their potential public-health role lies in helping established smokers move away from combustible tobacco.
A complete nationwide ban could reduce access to legal products. It could also risk driving demand towards informal sellers and unregulated liquids, where quality controls are weaker and the danger of adulteration may be greater. On the other hand, weak enforcement could allow youth use and illicit products to proliferate.
There is no easy answer. Malaysia must balance protection of children, enforcement against drug-linked vape products, public concern and the needs of adults who smoke.
Professor Ho said the evidence should remain part of the discussion.
“Malaysia needs to find its way through this maze, but in the process, we certainly can’t ignore the high certainty evidence that this review reveals.”
For smokers, the practical message is clear, the healthiest choice is to stop smoking. People who are ready to quit can seek support through healthcare professionals, counselling, nicotine replacement therapy and approved stop-smoking services. Regulated nicotine e-cigarettes may be another effective option for adults who smoke, particularly those who have found it difficult to quit by other means.
For policymakers, the challenge is equally clear: protect the public from youth addiction and illicit products without ignoring evidence that could help adults leave cigarettes behind.
The post Cochrane Review Concludes Vapes Help Smokers Quit, but Malaysia Faces Difficult Regulatory Choice first appeared on PP Health Malaysia (PPHM) | 10POINTS Evidence-Based Health News.
