MHRA accepts Eisai’s lemborexant submission for review

2 July 2026

Japanese drugmaker Eisai (TYO:4523) today revealed that the UK’s Medicines and Healthcare products Regulatory Agency (MHRA) has accepted for evaluation a marketing authorization application (MAA) for its in-house-discovered and developed orexin receptor antagonist lemborexant.

The application seeks approval of lemborexant for the treatment of adult patients with insomnia, characterized by symptoms present for at least 3 months with considerable impact on daytime functioning.

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