E-liquid is a fluid that is heated up in an e-cigarette device. This heated fluid is turned into a water-based vapour that helps combat nicotine cravings and replace cigarettes.

E-liquid itself is made up of four ingredients which include propylene glycol, vegetable glycerine, flavourings and nicotine if desired.

Propylene Glycol

Propylene Glycol or PG is the provider of flavour in e-liquid, it is nearly odourless and carries a faintly sweet taste.

Whilst a core ingredient in e-liquid, PG can also be found in foods, medicines and many other products to keep them moist. PG is a substance that has been investigated since the 1940s and is generally considered safe to inhale and swallow.

There are some who are sensitive or allergic to propylene glycol. If you start to feel unwell, its recommended that you switch to a higher VG e-liquid, if the reaction is more severe then stop altogether.

Vegetable Glycerine

Vegetable Glycerine or VG is a smoothing ingredient that gives a more tangible and satisfying vaping experience. The VG thickens the e-liquid mixture, which makes high VG e-liquid more suitable for larger sub-ohm devices.

VG is an odourless substance that is subtle sweet in taste. Similar to PG, VG is used elsewhere, particularly in the food industry as a sweetener and to also keep foods moist. It can also be found in many herbal and cosmetic products and medicines.

Again, VG has been studied by scientists who found it to be virtually non-toxic or non-irritating to the skin or digestive system. No health problems have been linked to the use of vegetable glycerine.


Flavourings in e-liquid are similar to those used in foods to enhance flavours. Flavourings in e-liquid have been disputed for a long time, with many misconceptions arising.

This primarily comes from reports of ‘popcorn lung’ which is a misused term for high-quality e-liquid that is fully TPD compliance. Popcorn lung was a term that became popular in the 2000s when workers in a popcorn factory inhaled a butter flavouring that contained the chemical diacetyl. 

Diacetyl is a substance that is safe to eat but not to inhale, if inhaled it can cause bronchiolitis obliterans which is a type of lung disease.

In the UK all e-liquid must be TPD compliant which eradicates diacetyl in e-liquid produced by trusted companies.

At Vampire Vape all flavourings and flavour concentrate bottles are mixed with EU Food Grade flavourings that are approved by leading experts. Furthermore, all our e-liquid is screened by a third-party laboratory that screens e-liquid for harmful carbonyls, including diacetyl. Once this has passed the test, the flavour compositions are disclosed to the Medicines and Healthcare products Regulatory Agency (MHRA) to be registered and sold in the market.


Nicotine is a chemical ingredient derived from the tobacco plant. It is an addictive substance and does carry some health risks. However, these aren’t as high as the health risks from smoking cigarettes.

Many believe nicotine to be the prolific element to cause tobacco-related illnesses when in fact it’s the tar and carbon monoxide that pose the severe risk.

Nicotine is an ingredient that doesn’t always have to be present as some vapers choose to vape e-liquid with no nicotine. For those who select nicotine-infused e-liquid, they can choose from varying nicotine strengths, including 3mg, 6mg, 12mg and 18mg.

The Facts

Due to the rising popularity of vaping, e-liquid has been heavily scrutinised by official bodies, including Public Health England, the NHS, ASH and the Royal Society of Public Health to name a few.

Each has concluded that vaping is a safer option and second-hand vapour is harmless. Furthermore, recent reports have also found e-cigarettes to be twice as effective as nicotine replacement therapies.

  • Public Health England found e-cigarettes is 95% less harmful than smoking traditional cigarettes.
  • Cancer Research UK found that e-cigarettes carry 97% less cancer-causing chemicals.
  • Over 2.9 million people in the UK vape with an estimated 1.5 million of these being exclusive vapers according to leading charity, ASH.
  • Officials found second-hand smoke is harmless.
  • Public Health England believes e-cigarettes to be the key to a tobacco-free England in the next ten years.
  • The Royal Society for Public Health reported that e-cigarette shops are a healthy addition to high-streets.
  • The RSPH reported that an estimated 22,000 people or more each year use e-cigarettes to quit smoking in the UK.