Biogen and Eisai have introduced the LEQEMBI Pen in Japan for treating early Alzheimer's disease.

Nov 13, 2026, 2:11 PM ETProductRead the original at firstwordpharma.com

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Biogen's Japan launch lets patients or care partners give LEQEMBI once weekly instead of making clinic visits for infusions. Easier use supports demand, though the report gives no sales or patient-use figures.

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Patients or care partners can give the medicine once a week instead of traveling to a medical facility for an infusion. That simpler routine may make treatment easier to use. The report does not say how many patients will use it, so the sales benefit is not yet known.

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