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Health Sciences Authority

Report adverse events

It is important to report adverse events associated with health products. Find out how to report them to HSA.

Last updated 13 March 2026

How to report

You are encouraged to report to us as soon as you are made aware of the adverse events, using one of the following methods:

Online submission

 Product types

 Online reporting

All product types except vaccines and medical devices

 Vaccines

 Medical Devices

Manual submission

Product types

Reporting forms

Therapeutic products (other than cell, tissue and gene therapy products)

Complementary health products such as:

  • Chinese proprietary medicines

  • Traditional medicines

  • Health supplements

Cell, tissue and gene therapy products

Cosmetic products (for company reporting only)

Complete the relevant form above and submit to us accordingly.

Information on adverse event reporting

Healthcare professionals' guide to adverse events reporting

Find out how to report an adverse event to us and learn more about the reporting process for specific adverse events.

  • For therapeutic product companies
    Therapeutic product importers, manufacturers, suppliers and registrants are required to report all serious adverse events of their products.

  • For cell, tissue or gene therapy product (CTGTP) companies
    CTGTP importers, manufacturers, suppliers and registrants are required to report all serious adverse events of their products

  • For medical device companies
    All companies dealing in medical devices including importers, manufacturers, suppliers and registrants are required to report adverse events of their products.

  • For clinical trials
    The clinical trial sponsor is required to report adverse events involving therapeutic products, CTGTP, medicinal products and medical devices.

Adverse Event Online Database

You may access the HSA Adverse Event Online Database for information about suspected local adverse events of therapeutic products and medicinal products captured from reports submitted to us by healthcare professionals as well as companies.

  • Industry partners may access through the HSA AE Online Enquiry e-service.

  • Healthcare professionals may access through the Health Professionals Portal (HPP) website and follow the procedures below:

    1. Select your profession under 'For Healthcare Professionals'.

    2. Click on 'Useful links'.

    3. Click on 'HSA Adverse Event Online' and log in via Singpass.

    4. Click on 'HSA Adverse Event (AE) Database'.