If you experience a side effect, you can report it through the Yellow Card Scheme: https://awttc.nhs.wales/medicines-optimisation-and-safety/yellow-card-centre-wales/
Os ydych chi'n cael sgil-effaith, gallwch roi gwybod amdano drwy'r Cynllun Cerdyn Melyn: https://cttcg.gig.cymru/optimeiddio-a-diogelwch-meddyginiaethau/canolfan-cerdyn-melyn-cymru/