Dose counter for a metered-dose inhaler

A dose counter for counting doses of medicament dispensed by or remaining in a metered-dose inhaler, the dose counter comprising:

• a rotatably mounted first gear wheel having a circular arrangement of ratchet teeth;
• a display coupled to the first gear wheel, the display having a visible array of dose counting indicia indexable in response to rotary motion of the first gear wheel;
• and
• an actuator mechanism having a first ratchet drive pawl for engaging the ratchet teeth of the first gear wheel in response to the dispensation of a medicament dose,
• wherein the actuator mechanism further comprises a second ratchet drive pawl for engaging the ratchet teeth of a second gear wheel that is coupled to the display, and wherein the actuator mechanism is configured such that, in use of the dose counter for counting a dispensed dose, a first ratchet tooth of the first gear wheel is engaged and rotatably driven by the first ratchet drive pawl and then a second ratchet tooth of the second gear wheel, which is coupled to the display, is engaged and rotatably driven by the second ratchet drive pawl,
• wherein the display comprises a flexible tape arranged between an indexing spool and a stock bobbin,
• wherein the first gear wheel and the second gear wheel are connected together by an axle, which serves as an indexing spool for the display, and
• wherein the first gear wheel and the second gear wheel are arranged at opposite ends of the axle so that either wheel can be used to drive the display.