Are Lost Mary Vapes Safe? Ingredients & If They Are Bad for You
Lost Mary is less harmful than smoking, according to the NHS. Vaping is not risk-free, though, and anyone who does not already smoke should not start.
Every Lost Mary we sell is made to UK rules. The 2ml pod limit, the 20mg nicotine cap and the ingredient restrictions all apply. Every product also has to be notified to the MHRA before it goes on sale.
Below, we cover what is in a Lost Mary, its side effects and how to check yours is real. If you already know you want one, our Lost Mary vapes page has every kit, pod and bottle.
Refill pods for every kit are in our Lost Mary pods range.
Shop the full Lost Mary range, the BM6000 kit or the 10ml nic salts.
Lost Mary Ingredients
The e-liquid inside a Lost Mary pod or bottle is made from these main ingredients:
- Propylene glycol (PG): pharmaceutical grade
- Vegetable glycerine (VG): pharmaceutical grade
- Nicotine salt: the form of nicotine used in prefilled pods
- Food-grade flavourings
- Sweeteners: including sucralose, which Lost Mary and Elf Bar have been cutting back
One change is worth knowing about. A study by Lost Mary and Elf Bar found nicotine lactate drew more nickel from nickel-chromium coils than nicotine benzoate. After that, both brands started phasing out nicotine lactate and nickel-chromium coils.
Do Lost Mary Vapes Contain Diacetyl?
Diacetyl is a flavouring chemical. The MHRA's ingredient guidance says it should not be used in UK nicotine e-liquids, alongside formaldehyde.
Lost Mary have not published a diacetyl statement of their own. They have published the testing behind their products, though. In 2025, Lost Mary and Elf Bar carried out over 136,000 tests on finished products, e-liquids, aerosols and materials.
Each new product also goes through 300 checks before launch, including 170 chemical analyses of e-liquid and aerosol.
Is Lost Mary a Weed Vape?
No, a Lost Mary contains nicotine, not THC or any form of cannabis. It will not get you high.
Every Lost Mary kit, pod and bottle sold in the UK is a nicotine product. The box carries the standard warning that it contains nicotine, a highly addictive substance.
Do Lost Mary Vapes Have Nicotine?
Yes, and most Lost Mary pods have a nicotine content of 20mg, the UK legal maximum. 20mg per ml works out at 2% nicotine.
The Lost Mary BM6000 is also made in 10mg and 0mg pods. We sell five of its flavours in 10mg.
The bottled Lost Mary nic salts come in 5mg, 10mg and 20mg, all 50/50 VG/PG.
For a Lost Mary with less nicotine or none, see whether Lost Mary pods come nicotine free.
Are Lost Mary Vapes Bad for You?
Compared with smoking, no, and the NHS says the evidence backs that up. Most of the harmful chemicals in tobacco smoke, including tar and carbon monoxide, are not in vape aerosol.
Compared with not vaping at all, there is some risk. A Lost Mary contains nicotine, which is addictive. The NHS is also clear that vaping is not risk-free, and that non-smokers and under 18s should not start.
Lost Mary Vape Side Effects
Side effects from a Lost Mary are the same as from any nicotine vape. The common ones the NHS lists are:
- Coughing
- Dry mouth and throat
- Mouth and throat irritation
- Shortness of breath
- Headaches
In our experience, side effects often settle when people drop a nicotine strength. A 10mg pod or a lower strength bottle is an easy first step. If side effects carry on, speak to your GP or a pharmacist.
Are Lost Mary Vapes Regulated?
Yes, when they are bought from a UK retailer. The UK rules that came from the Tobacco Products Directive apply to every Lost Mary on legal sale:
- Pods and tanks hold no more than 2ml of e-liquid
- Refill bottles are no bigger than 10ml
- Nicotine is capped at 20mg
- Packaging is child-resistant and tamper-evident
- Every product is notified to the MHRA, with its ingredients and emissions, before it can be sold
That is why a Lost Mary BM600 uses 2ml pods. Larger kits like the BM6000 feed a 2ml pod from a separate refill container.
Single-use vapes are a separate question. Lost Mary disposables were discontinued in the June 2025 ban. Our guide on whether Lost Mary vapes are banned covers which kits are still legal.
Where Are Lost Mary Vapes Made?
Lost Mary vapes are made in China. The manufacturer is iMiracle (Shenzhen) Technology, part of the group that also owns Elf Bar.
Wherever they are made, the UK rules above apply to anything sold here. The e-liquid also has to be notified before sale.
Is Lost Mary a Good Vape?
Yes, for anyone coming off disposables who wants something simple. Most of our customers choose Lost Mary for the flavours.
The pods come prefilled, most of the kits fire when you draw, and the range covers small and large kits. The trade-off is strength and cost over time.
A refillable kit lets you pick any strength and flavour, once you know you are sticking with vaping. Our prefilled pod kits page has Lost Mary next to the other brands.
The Lost Mary Kits We Sell
Every kit here is rechargeable, takes replacement prefilled pods, and is made to UK rules.
Lost Mary BM6000 Prefilled Pod Vape Kit
Lost Mary Nera 30K Fullview Prefilled Pod Kit
Lost Mary x Hawcos Crystal Pro 600 Kit
How to Tell if a Lost Mary Is Fake
Fake Lost Marys do exist, and they are not regulated or tested. To check yours:
- Find the authentication label on the side of the box.
- Enter the 18-digit security code on Lost Mary's verification page, or scan the QR code with your phone.
- If the code does not verify, do not use the vape.
Two more signs break UK rules: a missing nicotine warning on the box, and a pod bigger than 2ml.
The NHS advice is to buy from a reputable retailer. Our guide on how to spot a fake vape goes through the checks for every brand.
More Lost Mary guides
Frequently Asked Questions
About the author - Shane Margereson
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