Moderate alcohol consumption is generally considered safe for most people with ICDs, but there are some important considerations.
Alcohol can affect heart rhythm. Even in healthy people, heavy alcohol consumption can trigger atrial fibrillation ("holiday heart") and, in people with certain underlying conditions, ventricular arrhythmias. For people with inherited arrhythmia conditions such as Brugada Syndrome, alcohol — particularly in large quantities — can be a recognised trigger for dangerous arrhythmias and should be avoided or very strictly limited.
For most ICD patients, the general advice is to drink sensibly and within the recommended UK guidelines (no more than 14 units per week, spread across three or more days, with alcohol-free days). Binge drinking should be avoided.
Alcohol can also interact with some cardiac medications. For example, certain antiarrhythmic drugs and blood-pressure medications are affected by alcohol. Ask your pharmacist or cardiac team about any specific interactions with your medications.
If you are unsure what is safe for your specific condition, discuss it with your cardiologist or device clinic. They can advise based on your diagnosis, your device settings, and the medications you take.