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Choosing the wrong strength is the most common reason people give up on vaping and go back to cigarettes. This guide matches 5mg, 10mg and 20mg to your exact situation so you get it right from the start.
Quick Answer: Heavy smokers (15 to 20+ cigarettes a day) should start at 20mg. Moderate smokers (10 to 15 a day) can start at 10mg or 20mg. Light smokers (under 10 a day) usually find 10mg sufficient. 5mg suits people stepping down from 10mg or who only smoked very occasionally. The most common mistake is starting too low: underestimating your strength leads to chain vaping and cravings that push people back to cigarettes.
Nicotine strength is the single most important variable when switching from cigarettes to vaping. Get it right and vaping feels natural, cravings stay manageable and cigarettes lose their appeal quickly. Get it wrong in either direction and the experience suffers significantly.
Too low: you will not feel satisfied, you will vape constantly and still think about cigarettes. Too high: you may feel dizzy, nauseous or get a headache, which puts many people off vaping entirely. The goal is to match your nicotine intake closely enough to what cigarettes were providing that your body does not notice a significant drop on day one.
Unlike freebase nicotine where high strengths feel harsh, nic salts at 20mg remain smooth due to the benzoic acid formulation. This means you can safely start at the strength that matches your actual cigarette consumption rather than having to compromise on comfort.
| Your Background | Recommended Starting Strength | Notes |
|---|---|---|
| Heavy smoker (20+ a day) | 20mg | The UK legal maximum matches what your body expects. Start here. |
| Regular smoker (15 to 20 a day) | 20mg | 20mg is safer than starting too low. Step down to 10mg after 4 to 6 weeks. |
| Moderate smoker (10 to 15 a day) | 10mg to 20mg | Either works. If cravings persist on 10mg after a week, move to 20mg. |
| Light smoker (5 to 10 a day) | 10mg | 10mg provides enough satisfaction without being excessive at this level of consumption. |
| Very light / social smoker | 5mg to 10mg | 5mg may be sufficient. Start at 10mg if you are unsure and step down if needed. |
| Ex-disposable vape user | 20mg | Most disposables used 20mg. Match directly to avoid dissatisfaction. |
| Switching from 12mg to 18mg freebase | 10mg nic salt | Nic salts absorb faster so 10mg salt often feels comparable to 12mg to 18mg freebase. |
| Stepping down (already vaping) | One step below current | 20mg to 10mg, then 10mg to 5mg, then 5mg to 0mg if reducing is the goal. |
5mg is the lightest nic salt strength available in the UK. Throat hit is minimal and flavour becomes the main event at this level, with fruit, menthol and dessert profiles tasting noticeably sharper and cleaner. This strength suits very light or social smokers and vapers who have already stepped down from 10mg and want to continue reducing. It is not a recommended starting point for anyone who smoked 10 or more cigarettes a day: the nicotine delivery will be too low to prevent cravings.
10mg is the most widely used nic salt strength among established UK vapers and is the strength most people settle at after stepping down from 20mg. It delivers a noticeable nicotine hit that satisfies moderate cravings without being heavy enough to cause discomfort. If you smoked 10 to 15 cigarettes a day, 10mg is a sensible starting point. Many moderate smokers find 10mg does the job without ever needing to go to 20mg. If after a week on 10mg you still feel cravings, move up to 20mg rather than pushing through on an insufficient strength.
20mg is the UK legal maximum and was the standard strength used in the vast majority of disposable vapes. It delivers the fastest, most satisfying nicotine hit available in a legal UK e-liquid. Despite the high concentration, the benzoic acid formulation keeps the throat hit smooth at this level. If you smoked 15 or more cigarettes a day or used disposables regularly, 20mg is the correct starting point. A common mistake is avoiding 20mg out of fear it is too strong: starting too low leads to chain vaping and returning to cigarettes within days.
Your body will tell you quickly if the strength needs adjusting. These are the signals to look for in the first few days of vaping.
You are vaping constantly and still feel like you need more. You feel irritable or restless shortly after finishing a session. You are still thinking about cigarettes frequently throughout the day. You find yourself putting the device down without feeling genuinely satisfied. Solution: move up one strength level and reassess after 48 hours.
You feel dizzy or lightheaded after a few puffs. You get a headache during or after vaping. You feel nauseous or notice a racing heartbeat. Your hands feel shaky or you feel more anxious than usual. Solution: stop vaping immediately, drink water and drop to the next strength down. These are symptoms of nicotine overconsumption.
We stock all three strengths across our full range of TRPR-compliant nic salt e-liquids. Visit us in Wolverhampton or shop online with fast UK delivery.
Once you are comfortably away from cigarettes, many vapers choose to gradually reduce their nicotine intake. Nic salts make this straightforward because the same flavours are typically available across 5mg, 10mg and 20mg from most brands, so stepping down does not mean losing your favourite taste.
The key principle is to only reduce when you feel genuinely settled at your current strength. Moving too quickly is the most common reason vapers relapse to smoking. There is no fixed timeline: some people step down after a month, others stay at the same strength for a year or more. The priority is always staying off cigarettes. A typical path looks like: 20mg for four to eight weeks, then 10mg for as long as needed, then 5mg as a stepping stone to nicotine-free.
Our complete guide library covers every question about nic salts. Strengths, devices, safety, comparisons and more, all written for UK vapers.
Not if you were a regular or heavy smoker. 20mg is the UK legal maximum and the exact strength used in virtually every disposable vape. For someone who smoked 15 or more cigarettes a day, 20mg nic salt in a pod kit is the correct starting strength. The benzoic acid formulation keeps the throat hit smooth, so it does not feel harsh the way 20mg freebase would. If you feel dizzy after a session, that is a signal to drop to 10mg.
For some heavy smokers yes, for others no. It is worth trying 10mg first but if after a week you still feel strong cravings or are vaping very frequently without feeling satisfied, move up to 20mg. The goal is to find the strength that keeps you off cigarettes. There is no benefit to using a lower strength than your body actually needs at the start of the switch.
Yes. Some vapers use 20mg in the morning when cravings are strongest and switch to 10mg during the day. Others use 10mg most of the time and keep 20mg available for high-stress moments. Your device does not care which strength you use as long as it is the right format (50/50 nic salt in a pod kit below 18W).
Nic salts should not be used in sub-ohm devices. If you use a high-power mod or sub-ohm tank, use freebase e-liquid at 3mg or 6mg in a high-VG shortfill instead. Using 20mg nic salts in a sub-ohm setup delivers a dangerously high nicotine dose very rapidly. The strength and format must match the device.