The NHS has issued a crucial message for everyone taking or starting citalopram, urging them to seek medical help if they experience certain side effects. Citalopram is an antidepressant used to treat depression and panic disorder, available only on prescription. It belongs to a class of drugs called selective serotonin reuptake inhibitors (SSRIs), which work by increasing serotonin levels in the brain to improve mood and reduce stress.
When to Call NHS 111
Patients should call NHS 111 if they have taken more than their prescribed dose, as an extra dose can be dangerous. They should also call if they experience serious side effects or have thoughts of harming themselves. The NHS advises: "If you're told to go to A&E, do not drive. Ask someone to drive you or call 999 and ask for an ambulance. Bring the citalopram packet or leaflet, any remaining medicine, and any other medicines you take."
Common Side Effects
Most side effects improve within a couple of weeks as the body adjusts, but some may persist. Common side effects include headaches, nausea, vomiting, sweating, dry mouth, diarrhea or constipation, sleep problems, fast heartbeat (palpitations), and sexual problems like low libido. If dizziness or drowsiness occurs, patients should not drive, cycle, or use machinery until effects subside.
Serious Side Effects to Watch For
Serious side effects requiring immediate attention include allergic reactions (anaphylaxis) with symptoms like swollen throat or tongue, raised itchy rash, and difficulty breathing; serotonin syndrome, a rare but serious condition causing fast heartbeat, sweating, shaking, twitching muscles, confusion, or agitation; internal bleeding indicated by bruises or blood in urine, stool, or vomit; a rare life-threatening condition causing fast irregular heartbeat, light-headedness, and fainting (torsades de pointes); and feeling very low with suicidal thoughts.
For a full list of side effects, patients should consult the medicine leaflet or the electronic medicines compendium website. Any side effects can be reported via the Yellow Card website.
