Consort Medical said the first product to use its built-in dose counter had been given the go-ahead by the US Food and Drug Administration.
Consort's Integrated Dose Counter (IDC) is being used in Teva's QNASL nasal aerosol, which treats of nasal seasonal allergy symptoms.
The firm had been developing its IDC for several years in response to a patient and compliance need to let patients know if their device contained sufficient drug and to indicate when they need to seek a further prescription.
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It provides patients with an indication of how many doses are left inside the canister in line with FDA guidance.
"We are very pleased to announce that the FDA has approved the use of our IDC with Teva's QNASL, making this our first commercially marketed integrated dose counter," said chief executive Jon Glenn.
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