Cardiac Arrhythmia

Nutrients connected to Cardiac Arrhythmia

A link means the body needs the nutrient for this, or that low intake is linked to it. It does not mean extra supplements help if your intake is already adequate; each link shows how strong the evidence is.

• PotassiumDocumented risk

  Irregular heartbeat is a symptom of both low and high blood potassium.

• Bitter orangeDocumented risk

  NCCIH says abnormal heart rhythms have been reported with bitter orange supplements; most products had several ingredients.

• YohimbeDocumented risk

  NCCIH links yohimbine to irregular heartbeat and heart attacks.

• MagnesiumDeficiency link

  Irregular heart rhythm is a sign of moderate magnesium deficiency; untreated severe low magnesium can lead to cardiac arrest.

• Caffeine supplementsDocumented risk

  People with an irregular heartbeat are advised to ask a health professional about limiting caffeine; very large amounts can cause dangerous heart rhythms.

• Caffeine plus L-theanine and brain formulasDocumented risk

  People with an arrhythmia are advised to check with a provider about caffeine.

• Licorice rootDocumented risk

  Glycyrrhizin can cause irregular heartbeat, especially with large amounts or long use.

• Kola NutsDocumented risk

  The EMA names heart rhythm problems as a reason for caution with kola.

• Energy and Focus BlendsDocumented risk

  A 2026 review in young people links energy drinks to rhythm disturbances and ECG changes, including rare cardiac arrest reports; MedlinePlus lists arrhythmia as a reason to check first.

• Flaxseed oil and plant omega-3 (ALA)Preliminary or mixed

  Two trials suggest ALA probably slightly lowers arrhythmia risk (moderate certainty).

• Energy DrinksDocumented risk

  QTc prolongation in many studies, but a meta-analysis of trials found no significant QT change; unsettled.

• Pre-Workout SupplementsDocumented risk

  FDA links DMAA to arrhythmias; synephrine case reports describe cardiac arrhythmias among diagnoses raised.

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