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Report an adverse event

Report a Possible Side Effect

At GSK we take the safety of our patients and consumers very seriously. We know that side effects can happen but it is not always possible to predict who will get them. For this reason, it is vital for us to continuously monitor the safety profile of our products.

How to Report a Possible Side Effect

To help us process your information quickly and effectively, please remember to report as much relevant information as possible. At a minimum you will need to provide the following:

  1. The initials of the person who experienced the possible side effect and/or other identifiers, such as gender, date of birth.
  2. The contact information of the reporter, namely the person who is reporting the issue.
  3. A description of the possible side effect itself, such as the signs and symptoms experienced, date the possible side effect started and the result of the possible side effect.
  4. The name of the GSK/ViiV product involved.

Our Privacy Notice outlines how GSK handles the processing of personal information when dealing with your enquiry, complaint or adverse event report.

Report an Adverse Event

Either call us at +41 31 862 21 11 or send an email to You can also report an unexpected event directly to the Swiss authorities.