l carnitine cause heart attack can Pathobiological Relationship of Excessive Dietary Intake of Choline/L- Carnitine: A TMAO Precursor-Associated Aggravation in Failure in Sarcopenic Patients The Role of l-Carnitine in – cardiovascular health - L-Carnitine 500mg

Simonds E, Iwanaga J, Ishak B, Reina MA, Oskouian RJ, Tubbs RS

Koudstaal, A

Symptoms of POTS may include: Dizziness or lightheadedness Increased heart rate upon standing Heart palpitations or chest pain Extreme fatigue, especially in the morning Sleep disturbances Headaches Brain fog Exercise intolerance Shakiness or anxiety Visual disturbances Intolerances to heat or exercise Intolerance to prolonged standing POTS has been linked to other underlying health conditions and imbalances, including other autoimmune conditions, Ehlers-Danlos syndrome (EDS), mast cell activation syndrome (MCAS), chronic fatigue syndrome, adrenal dysfunction, and irritable bowel syndrome (IBS)

Chinese Medical Association (CMA)