The NHS has issued a warning to individuals taking citalopram, a commonly prescribed antidepressant, urging them to contact 111 if they observe a specific symptom while using the toilet. This symptom could indicate a rare but serious side effect of the medication.
What is citalopram?
Citalopram is a prescription antidepressant that belongs to the selective serotonin reuptake inhibitor (SSRI) class. It is frequently used to treat depression and, in some cases, panic attacks. In England alone, approximately 13.3 million prescriptions for citalopram are dispensed each year, making it one of the most widely taken antidepressants in the UK.
Common side effects
Like all medicines, citalopram can cause side effects in some people. The NHS notes that common side effects often subside as the body adjusts to the medication. For instance, taking citalopram for panic attacks may temporarily worsen anxiety during the first few weeks of treatment. However, this effect usually wears off after a few weeks. If it persists, patients are advised to consult their doctor, who may recommend a lower dose to alleviate symptoms.
Approximately one in 100 people experience common side effects, which include dry mouth, excessive sweating, difficulty sleeping, headaches, and nausea. If these symptoms continue or cause concern, individuals should speak to a doctor or pharmacist.
Rare but serious side effects
There are several rarer side effects that require immediate medical attention. These occur in fewer than one in 1,000 people. One such sign is noticing blood in your stool when using the toilet. This can cause the stool to appear red or black, indicating potential bleeding from the gut. The NHS advises patients to call a doctor or 111 immediately if they experience this symptom.
Other symptoms that warrant a call to 111 or a doctor include:
- Bleeding from the gums or unexplained bruising that appears without reason or grows larger
- Intense feelings of happiness, enthusiasm, or excitement, or restlessness that makes it difficult to sit or stand still
- Coughing up blood or noticing blood in urine
- Vomiting blood
When to call 999 or go to A&E
In more severe cases, patients should call 999 or visit A&E immediately if they experience:
- Chest pain, pressure, or shortness of breath
- A first-time seizure or fit, or an increase in frequency of existing seizures
- Severe dizziness or fainting
- Painful erections lasting longer than two hours, even when not engaging in sexual activity
- Heavy bleeding from cuts or nosebleeds that does not stop within 10 minutes
- Thoughts of self-harm or suicide
- Headaches, difficulty focusing, memory problems, confusion, weakness, seizures, or loss of balance, which may indicate low sodium levels
Patients are encouraged to remain vigilant and seek prompt medical advice if any of these symptoms occur.
