At Janssen, we’re creating a future where disease is a thing of the past. We’re the Pharmaceutical Companies of Johnson & Johnson, working tirelessly to make that future a reality for patients everywhere by fighting sickness with science, improving access with ingenuity, and healing hopelessness with heart. We focus on areas of medicine where we can make the biggest difference: Cardiovascular & Metabolism, Immunology, Infectious Diseases & Vaccines, Neuroscience, Oncology, and Pulmonary Hypertension


50-100 Holmers Farm Way
High Wycombe
HP12 4EG

Contact details

Medical Information phone number

Hours of operation
Mon-Thurs, 9AM-5PM, Fridays 9AM-4PM except bank holidays

Medical Information email

Adverse events and product complaints

Please use the contact details below to report adverse events or product complaints

Adverse event phone number

Adverse event email

Company website


Janssen products

Medicinal products marked withare subject to additional monitoring. This will allow quick identification of new safety information. You can help by reporting any side effects you may get.

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Concerta XL

(Methylphenidate Hydrochloride)

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Page last updated: 28/03/2024