Taking metoprolol with other medicines and herbal supplements

Cautions with other medicines

There are some medicines that may affect the way metoprolol works.

Tell your doctor if you're taking any other medicines, including:

• other medicines for high blood pressure (hypertension) – when taken together with metoprolol, this can lower your blood pressure too much, which may make you feel dizzy or faint. Tell your doctor if this keeps happening as they may change your dose
• other medicines that can lower your blood pressure – these include some antidepressants, nitrates (for chest pain), baclofen (a muscle relaxant), tamsulosin (for an enlarged prostate), and co-careldopa and levodopa (for Parkinson's disease)
• non-steroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen – they can stop metoprolol working properly
• medicines for diabetes – metoprolol may make it more difficult to recognise the warning signs of low blood sugar
• medicines for allergies, such as ephedrine, noradrenaline or adrenaline

These are not all the medicines that may cause problems if you take them with metoprolol. For a full list, see the leaflet inside your medicine packet.

Mixing metoprolol with herbal remedies and supplements

There might be a problem taking some herbal remedies and supplements together with metoprolol, especially ones that cause side effects like low blood pressure.