A pint at the end of a long day is every beer lovers dream but have you ever been curious about the restorative properties of a good ale?

Well wonder no longer as Brewdog have the answer.

The Scots brewery has revealed that its latest beer has been inspired by a 19th century medical textbook's description of India Pale Ale.

The new 8.7% ABV IPA, which launches today, is called Restorative Beverage for Invalids and Convalescents.

The textbook, called A Treatise on Food and Diet and written by Dr Jonathan Pereira, described the IPA of 1843 as  'carefully fermented, so as to be devoid of all sweetness, or, in other words, to be dry; and it contains double the usual quantity of hops. It forms, therefore, a most valuable restorative beverage for invalids and convalescents'.

BrewDog co-founder James Watt said: "This is heritage and history in a bottle. BrewDog has always been inspired by the IPAs of the past, famed for the huge quantities of hops used to create bold and brash bitterness.

"With this beer, we have created a beer with such intensity that it is akin to injecting hops straight into your tongue with a needle. It's the India Pale Ale in its purest form; pale, bitter and dry. Restorative Beverage for Invalids and Convalescents is a mouthful in both name and flavour."

The beer is available online from Brewdog's shop and will go on sale in its bars nationwide on Friday, March 6.