Angina is chest discomfort caused when the heart muscle does not receive enough oxygen-rich blood. It is often felt as pressure, tightness, heaviness or squeezing and may spread to either arm, the neck, jaw, shoulder, back or stomach. Exertion, cold weather, stress or a heavy meal can trigger stable angina, while other forms involve artery spasm or the small vessels of the heart.
Recognising serious symptoms
Chest pain that does not stop after a few minutes’ rest or prescribed glyceryl trinitrate (GTN), or that is accompanied by sweating, nausea, breathlessness or light-headedness, may be a heart attack: call 999. If diagnosed with angina, follow the personal GTN plan; NHS guidance advises a second dose after five minutes and 999 if symptoms remain five minutes later.
Treatment and risk reduction
GTN treats attacks. Beta blockers, calcium-channel blockers and other medicines reduce their frequency. Statins, blood-pressure treatment and, for selected people, antiplatelet medicines lower the risk of heart attack or stroke. Coronary angioplasty or bypass surgery may improve blood flow when symptoms remain problematic.
Stop smoking, take prescribed medicines consistently and build exercise under clinical guidance. A heart-healthy diet emphasises vegetables, fruit, whole grains, pulses, fish and unsaturated fats while limiting salt, free sugar and saturated fat. Angina cannot safely be managed through supplements alone.
Useful supplements
Supplements should be selected for the individual rather than used automatically. Product directions and advice from an appropriately qualified professional should take precedence over general information.
| Supplement | Effects |
|---|---|
| L-carnitine | Supports transport of fatty acids into mitochondria for energy production; the source cites studies reporting fewer exercise-induced angina symptoms. |
| Magnesium citrate | Supports normal muscle and nerve function and relaxation of vascular smooth muscle. |
| Coenzyme Q10 | Supports mitochondrial energy production in heart and vascular tissues. |
| Krill oil | Provides EPA and DHA, which support normal triglyceride levels and inflammatory regulation; the source describes benefits for heart fat and angina. |
| Vitamin E | Provides antioxidant protection; the source cites early high-dose studies reporting reduced angina. |
The source vitamin E dose reaches levels that can increase bleeding and other risks. Krill oil also affects bleeding, and magnesium can lower blood pressure or cause diarrhoea. CoQ10 may interact with warfarin, while L-carnitine can cause digestive symptoms and interacts with some medicines.
Supplements must be checked against GTN, blood-pressure medicines, anticoagulants and antiplatelets. The core of safe care remains rapid recognition of changing symptoms, prescribed anti-anginal treatment and aggressive management of cardiovascular risk.
Looking for personalised nutrition and lifestyle support? An FNTP member may be able to help you explore an approach suited to your individual needs. Find an FNTP practitioner.
This article is for general education and does not replace individual medical advice, diagnosis or treatment.
