Small tin, contains amyl nitrite ampoules made by Burroughs Wellcome and Co. of London, English 1910

Amyl nitrite, when inhaled, has the effect of relaxing muscles. It has primarily been used in the treatment of heart conditions, such as angina, by helping to reduce constriction of the coronary arteries. It has also been used as a muscle relaxant during childbirth. The brief euphoria that amyl nitrite can produce in the patient has led to its extensive use as a recreational drug.

A label on the bottom of this tin suggests that these particular capsules were made for the Ministry of Marine of the Turkish Government.