Nitrosamines: three atomoxetine generics now ship under an interim limit
On Sep 10, PMDA posted notices from three generic makers of atomoxetine tablets (Daiichi Sankyo Espha, Nipro, Towa). All three found N-nitroso-atomoxetine in their products.
- Interim control limit agreed with MHLW: 5.583 ppm. Only lots below it are shipped.
- Acceptable intake 100 ng/day, which corresponds to a final limit of 0.83 ppm. Reformulation is under way.
- Under MHLW's July 2025 notice, a finding in another company's product with the same API can in principle require you to set a specification too.
Who should care: anyone filing atomoxetine in Japan should expect questions on NDSRI control.
