This website has been developed and fully funded by Janssen-Cilag Ltd. and is intended for UK patients prescribed Tremfya®▼ (guselkumab) only.

Information on COVID-19 for patients using Tremfya® (guselkumab)


Welcome to myTremfya Using your medication FAQs Resources
  • What you need to know before you use your medication
  • How to use your medication
  • How often to use your medication
  • Possible side effects
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Reporting side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. You can also report side effects directly via the Yellow Card Scheme at:

By reporting side effects you can help provide more information on the safety of this medicine.

▼This medicine is subject to additional monitoring. This will allow quick identification of new safety information. You can help by reporting any side effects you may get. See for how to report side effects.