Questions such as "what is the nicotine content of this brand?" usually expect a single number. For cigarettes sold in the European Union and the United Kingdom there is no longer a number on the pack to point to, and the numbers that used to be printed did not measure what most readers assume. This page explains where the tar, nicotine and carbon monoxide (TNCO) figures came from, what limits apply, and why they were taken off packs.
What the figures were
The figures are machine-measured yields: the milligrams of tar, nicotine and carbon monoxide collected when a cigarette is smoked by a laboratory machine under a fixed, standardised puffing regime. EU law names the test methods: ISO 4387 for tar, ISO 10315 for nicotine and ISO 8454 for carbon monoxide, with accuracy verified under ISO 8243 (Directive 2014/40/EU, Article 4(1)). The UK's Tobacco and Related Products Regulations 2016 use the same four standards (regulation 14).
A yield is therefore a property of the cigarette tested under one set of machine conditions. It is not a measurement of how much a person takes in.
The legal maximums
Cigarettes placed on the market in the EU may not exceed 10 mg of tar, 1 mg of nicotine and 10 mg of carbon monoxide per cigarette (Directive 2014/40/EU, Article 3(1)). The UK regulations set the same three limits (regulation 13). The same ceilings applied from 2004 under the earlier Directive 2001/37/EC.
Why the numbers used to be on the pack
Under Directive 2001/37/EC, the tar, nicotine and carbon monoxide yields "shall be printed on one side of the cigarette packet", covering at least 10% of that surface (12% or 15% in Member States with two or three official languages) (Article 5(1)). This is the origin of the "10 mg tar, 0.8 mg nicotine, 10 mg CO" style panels that many people remember.
Why they were removed
Directive 2014/40/EU reversed that rule. Under Article 13(1), the labelling of unit packets and outside packaging must not include any information about the nicotine, tar or carbon monoxide content of the product. The same article prohibits labelling that creates an erroneous impression about a product's characteristics, health effects, risks or emissions. Printed yields had come to be read as a relative safety ranking between brands, which the evidence does not support.
Why a lower yield does not mean lower intake
The United States National Cancer Institute reviewed this question in its 2001 monograph Risks Associated with Smoking Cigarettes with Low Machine-Measured Yields of Tar and Nicotine (Smoking and Tobacco Control Monograph 13). Its conclusions are the main reason machine yields stopped being treated as consumer information:
- Machine yields do not predict what smokers actually receive, because people do not smoke like the test machine.
- Smokers of lower-yield cigarettes tend to compensate, for example by taking larger or more frequent puffs or by covering filter ventilation holes, and so maintain their nicotine intake.
- Smoking "low-yield" (also called "light" or "low tar") cigarettes is associated with significant disease risks. The monograph found no evidence of a public-health benefit from the design changes that lowered machine yields.
What this means for the "nicotine content of brand X" question
For current EU and UK packs, there is no official per-pack nicotine figure to look up, because regulations forbid printing one. A milligram figure quoted for a brand variant most likely comes from packs printed before the change. It is a machine yield under the ISO method, and the legal cap is 1 mg of nicotine. It indicates how the product performs in the standard test. It does not tell you how much nicotine a given smoker absorbs, and it does not make one variant a safer choice than another.
Sources
- Directive 2014/40/EU, Article 3: maximum emission levels
- Directive 2014/40/EU, Article 4: measurement methods
- Directive 2014/40/EU, Article 13: product presentation
- Directive 2001/37/EC, Article 5: labelling (version before repeal)
- Tobacco and Related Products Regulations 2016, regulation 13 and regulation 14
- National Cancer Institute, Smoking and Tobacco Control Monograph 13 (2001)