Capstan is a brand of unfiltered British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 cigarettes made by Imperial Tobacco

Imperial Tobacco

Imperial Tobacco is a global tobacco company headquartered in Bristol, United Kingdom. It is the world’s fourth-largest cigarette company measured by market share , and the world's largest producer of cigars, fine-cut tobacco and tobacco papers...

 originally launched by W. D. & H. O. Wills in 1894. The brand became less popular when the health effects of tobacco

Tobacco

Tobacco is an agricultural product processed from the leaves of plants in the genus Nicotiana. It can be consumed, used as a pesticide and, in the form of nicotine tartrate, used in some medicines...

 became more widely known, few shops now sell them.

In 1971 the UK government published a table of the tar and nicotine contents of cigarettes available in the UK market, and Capstan Full Strength contained, by some margin, the highest tar

Tar (tobacco residue)

Tar is the common name for the resinous partially combusted and healed particulate matter produced by the burning of tobacco and other plant material in the act of smoking. Tar is purportedly the most destructive component in habitual tobacco smoking, accumulating in the smoker's lungs over time...

 and nicotine

Nicotine

Nicotine is an alkaloid found in the nightshade family of plants that constitutes approximately 0.6–3.0% of the dry weight of tobacco, with biosynthesis taking place in the roots and accumulation occurring in the leaves...

contents of any brand.