What Are Nic Shots?
A clear UK guide to nic shots, why UK law makes them necessary and how they work with shortfill e-liquid bottles.
Nic shots are small bottles of pure flavoured nicotine added to shortfill e-liquid to set your strength.
UK law caps nicotine bottles at 10ml maximum. Larger bottles must be nicotine free or sold as zero nicotine shortfills. To add nicotine, you mix in a 10ml or 18mg nic shot at home. The combined liquid sits at a usable strength like 3 or 6mg in a larger bottle.
Nic shots are a UK specific solution to the regulatory problem of selling larger bottles of nicotine e-liquid. Understanding why they exist makes the maths and process much clearer. Once you have done it once, mixing a shortfill at home is straightforward.
How nic shots work
Four steps cover the process. The grid below explains each.
Buy a shortfill
Get a 50ml or larger nicotine free e-liquid bottle from a UK vape shop. The bottle has empty space at the top.
✓ Step oneBuy a nic shot
Get a separate 10ml 18mg nic shot. Match the VG/PG ratio to your shortfill where possible.
✓ Step twoAdd the shot
Pour the nic shot into the shortfill bottle through the dropper opening.
✓ Step threeShake and stand
Shake for 30 seconds. Stand for 5 minutes. The mixed liquid is ready to vape.
✓ Step fourCommon nic shot maths
The table below covers what nicotine strength you get from different combinations.
| Combination | Final strength |
|---|---|
| 50ml shortfill plus one 10ml 18mg shot = 60ml | 3mg final strength |
| 100ml shortfill plus two 10ml 18mg shots = 120ml | 3mg final strength |
| 50ml shortfill plus two 10ml 18mg shots = 70ml | 5.1mg final strength |
| 100ml shortfill plus four 10ml 18mg shots = 140ml | 5.1mg final strength |
| Adding only half a shot to 50ml shortfill | 1.5mg final strength |
Why UK shortfill mixing makes economic sense
Pre mixed nicotine e-liquid is restricted to 10ml bottles by UK TPD rules. A 50ml shortfill plus a nic shot costs significantly less per ml than buying five 10ml bottles. Most UK vape shops sell shortfills 100ml for 10 to 15 pounds. Five 10ml bottles cost 20 to 25 pounds. The shortfill model emerged to give UK vapers cost effective access to larger volumes.
UK shops sell nic shots in two main forms, freebase and salt. Freebase nic shots suit standard shortfills. Salt nic shots suit pod system users who want larger bottles than the 10ml legal cap. Both are sold under TPD rules and labelled clearly. Mixing the wrong type can produce unexpected throat hit or absorption speeds.
How to mix nic shots correctly
The checklist below covers what UK vape shop staff most often recommend.
Nic shot mixing checklist
Use four or more of these for clean mixes every time.
- Match the VG/PG ratio of nic shot to shortfill where possible
- Add the full shot rather than partial doses for predictable strength
- Shake the bottle vigorously for 30 seconds after adding
- Stand for at least 5 minutes before vaping
- Some shortfills benefit from steeping for 24 hours after mixing
- Label the bottle with the strength once mixed for clarity
Common nic shot mistakes
Three mistakes cause most problems. Adding the wrong type of nic shot produces unexpected results. Adding the wrong number of shots gives the wrong strength. Forgetting to shake creates uneven nicotine distribution which feels harsh on first puffs and weak on later ones. The fix for all three is following the same process every time and labelling clearly.
Shortfills and longfills work differently with nic shots, which our our guide on what is a shortfill vape liquid explores, plus our article on what is a longfill vape liquid covers the science behind the nicotine strength.
Frequently asked questions
Why are nic shots sold separately in the UK?
UK TPD rules cap nicotine bottles at 10ml. Nic shots let you add nicotine to larger bottles.
How many nic shots do I need for a shortfill?
Match the empty space. Most 50ml shortfills take one 10ml shot for 3mg strength.
Can I add a salt nic shot to a freebase shortfill?
Yes but the result will feel different from either pure form. Most users stick to one type.
How long do nic shots last?
Unopened, around 12 to 18 months. Once added to shortfill, the mixed liquid lasts 6 to 12 months.
Are nic shots legal in the UK?
Yes. They are TPD compliant and sold widely in UK vape shops.
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