Why Switch? The Evidence in One Paragraph

Public Health England and the NHS have both confirmed that vaping is at least 95% less harmful than smoking. A 2019 Cochrane review (the gold standard in medical evidence) found vapers were almost twice as likely to successfully quit smoking compared with users of nicotine patches or gum. In 2023, the NHS began actively recommending vaping as a stop-smoking tool, and the "Swap to Stop" scheme distributes free vape kits to smokers across England. If you've tried patches, gum, lozenges, or willpower alone and they didn't work — vaping is the option with the highest documented success rate.

This guide assumes you've decided to switch. It walks you through the practical "how" — what to buy, how to use it, what to expect, and how to navigate the first six months.

Step 1: Choose the Right Device

For 90% of smokers switching for the first time, the right answer is a Pod kit — a small, rechargeable device about the size of a USB stick or a chunky pen, with replaceable or refillable pods of e-liquid.

Don't start with:

• A large vape mod with a sub-ohm tank (too complex, too much vapour, wrong nicotine type)
• A no-name device from a corner shop or eBay (quality control varies wildly)
• Anything you saw on TikTok with 10,000 puffs and crystal lights (gimmick devices, often poorly made)

Do start with:

• A Prefilled pod kit — simplest, closest to the disposable experience you may already know. Examples: Hayati Pro Ultra, Elf Bar AF5000, Lost Mary BM6000. Cost: £15-25 to start. Browse prefilled pods.
• A refillable pod kit — marginally more involved but significantly cheaper long-term. Examples: Vaporesso XROS, Uwell Caliburn, OXVA Xlim. Cost: £15-25 for the device plus £3-5 per bottle of e-liquid. Browse refillable pod kits.

If you want a deeper comparison, see our Complete Pod Kits Beginner's Guide.

Step 2: Pick the Right Nicotine Strength

This is the single most important decision you'll make. Too low and you'll still crave cigarettes; too high and you'll get headaches.

Rough guide based on how much you smoked:

Your smoking habit	Recommended starting strength
5-10 cigarettes a day	10mg nic salt
10-20 a day	20mg nic salt
20+ a day or roll-ups	20mg nic salt, possibly higher-capacity device

UK law caps nicotine e-liquid at 20mg/ml. Anything stronger sold in the UK is illegal. If 20mg doesn't satisfy your cravings, the answer isn't "higher strength" — it's more frequent puffs or a device with a larger pod capacity so you can vape more before refilling.

Step 3: Pick a Flavour You'll Actually Enjoy

This sounds obvious, but it matters: people who enjoy their vape flavour are far more likely to stick with vaping and stay off cigarettes. Choosing a flavour you tolerate but don't love is a common reason people relapse to smoking.

Safe starting points for ex-smokers:

• Tobacco-flavoured nic salts — closest to cigarette taste, helps with the initial transition. Most former smokers move away from these within 1-2 months as their palate recovers.
• Menthol/mint — cooling, refreshing, popular with ex-smokers who used to smoke menthol cigarettes.
• Fruit flavours (strawberry, watermelon, blueberry) — by far the most popular category, and what most ex-smokers settle on long-term.
• Dessert flavours (vanilla, custard, lemon tart) — satisfying for some users; warning: they shorten coil life (see our Burnt Taste Guide).

Buy 2-3 different flavours your first time and try them across the first week to find your preference.

Step 4: The First 24 Hours

Charge the device fully before first use

USB-C, standard 5V/1A charger (laptop USB or basic phone charger). Don't use a phone fast-charger. Charging takes 30-60 minutes for most pod kits.

Prime the coil

If you've fitted a refillable pod, fill it with e-liquid and wait 5-10 minutes before the first puff. Skipping this step is the #1 cause of "burnt" first hits and ruined coils.

Take gentle, slow puffs — not sharp ones

This is critical. Cigarettes are designed for sharp lung inhalation. Pod kits are designed for mouth-to-lung (MTL): draw the vapour into your mouth, hold it briefly, then inhale into your lungs. Sharp lung-hits on a pod kit will trigger a coughing fit and may make you give up.

Wait between puffs

Nicotine in salt form absorbs faster than freebase nicotine in cigarettes. Take a puff, wait 30 seconds, then judge if you need another. Most beginners over-vape on day 1 because they're used to the slower onset of a cigarette — and end up nauseous from nicotine overload.

Step 5: The First 14 Days

This is the hardest period. Your body is adjusting from inhaling combusted tobacco smoke (4,000+ chemicals including tar, carbon monoxide, formaldehyde) to inhaling vapour (water, PG, VG, nicotine, food-grade flavourings).

What you might experience

• A wet cough. Common in the first 1-2 weeks. Your lungs are clearing tar and mucus that accumulated from smoking. This is positive, not negative — you're getting the gunk out. Drink plenty of water; it'll pass.
• A scratchy throat or mild headaches. Usually means you're either vaping at the wrong nicotine strength or not drinking enough water. PG (propylene glycol) is mildly dehydrating.
• Mouth ulcers or dry mouth. Hydration issue — keep water nearby and sip throughout the day.
• Sharper taste and smell. Often noticed within 3-5 days. Many ex-smokers find food more flavourful for the first time in years.
• Cravings for actual cigarettes. Normal. These reduce significantly after 2-3 days and continue declining for several weeks. The trick is keeping your vape within reach so the moment of craving doesn't lead back to the corner shop.

What to avoid

• "Just one cigarette" — the single most common relapse cause. Resetting your nicotine clock with a cigarette can drag a full smoker back into the habit within days.
• Drinking heavily on day 1-3 — alcohol weakens willpower exactly when you need it. Wait a few weeks.
• Hanging out with smokers — not forever, but during the first 7-14 days, try to limit time around people who'll be smoking near you.

Step 6: 30 Days In

By now, most physical cigarette cravings have settled. What remains is mostly habit — the muscle memory of reaching for a cigarette in specific situations (after meals, with coffee, while driving, when stressed).

The fix is replacing those triggers with the vape: pod kit always within arm's reach in the moments you'd previously have reached for a cigarette. Within 30-45 days, the habit transfers and the conscious effort fades.

You may also notice:

• Better sleep and easier breathing on stairs
• Less yellow staining on fingers and teeth
• Clothes, car, home no longer smelling of smoke
• Substantial money savings (typically £50-150/month if you smoked 20/day)

Step 7: Six Months and Beyond

At six months you're effectively a non-smoker. Lung function has measurably improved (NHS data shows ~10-30% improvement in FEV1, the standard lung capacity measure, by month 6 for ex-smokers who switched cleanly to vaping).

Should you eventually quit vaping too?

That's a personal decision. Some ex-smokers vape long-term as a substitute habit — there's no medical urgency to stop, since vaping carries a tiny fraction of the health risks of smoking. Others gradually step down nicotine strength (20mg → 10mg → 6mg → 3mg → 0mg) over 6-18 months until they're vaping nicotine-free, and then eventually stop altogether.

If you want to taper:

1. Stay at your starting strength until cravings are gone (typically 2-4 months)
2. Step down one level (e.g. 20mg → 10mg). Stay there 2-3 months.
3. Step down to a 6mg freebase or 3mg nic salt. Stay there 2-3 months.
4. Step down to 0mg shortfill. Stay until vape habit fades.
5. Stop entirely when you find yourself forgetting to pick up the device.

Common Questions

Is vaping really safer than smoking?

Yes. The harm comes mostly from combustion — burning tobacco produces tar, carbon monoxide and thousands of toxic chemicals. Vaping involves no combustion. The remaining risks (nicotine addiction, mild respiratory irritation from flavourings) are real but vastly smaller than smoking.

What about "popcorn lung"?

A 2015 viral health story that never reflected reality in the UK or EU. The chemical diacetyl (the supposed cause) has been banned in UK/EU vape products since 2016. There has never been a confirmed case of popcorn lung from vaping in the UK.

Can I vape during pregnancy?

The NHS guidance: while vaping is dramatically safer than smoking, ideally pregnant women should use no nicotine at all. If choosing between smoking and vaping during pregnancy, vaping is the safer option — but consult your midwife.

Will my insurance change?

Some UK life insurance providers classify vapers and smokers the same; others classify ex-smokers who've vaped for 12+ months as non-smokers. Worth checking with your insurer after a year nicotine-free or even just vape-only.

Can I vape indoors?

Legally yes — the UK smoking ban doesn't cover vaping. Practically, most pubs, offices, trains and public buildings have voluntarily extended their no-smoking rules to vaping. Check signage. Hospitality venues generally allow vaping in outdoor smoking areas.

The Bottom Line

Switching from smoking to vaping is the single best decision you can make for your physical health if you currently smoke. The first two weeks are the hardest — after that, it gets dramatically easier, and the gains (money, health, smell, taste, breathing) compound week after week.

The right starting kit is a refillable or prefilled pod kit, a 20mg nic salt (for most smokers), and a flavour you enjoy. Total cost to begin: under £30. Yearly cost: roughly a third to half of what you currently spend on cigarettes.

If you want a recommendation tailored to your specific smoking habit, our team is on live chat 10am-8pm, 7 days a week. We've helped thousands of UK smokers make the switch — we'll help you too.