Too much Magnesium cause heart palpitations?

I started taking Tension RX which contains mostly Magnesium for anxiety. All it has done is give me a feeling of tightness in my chest and kind of heart palpitations. Can Magnesium cause this? Thanks.

I hope this helps

Dietary magnesium does not pose a health risk, however pharmacologic doses of magnesium in supplements can promote adverse effects such as diarrhea and abdominal cramping. Risk of magnesium toxicity increases with kidney failure, when the kidney loses the ability to remove excess magnesium. Very large doses of magnesium-containing laxatives and antacids also have been associated with magnesium toxicity [25]. For example, a case of hypermagnesemia after unsupervised intake of aluminum magnesia oral suspension occurred after a 16 year old girl decided to take the antacid every two hours rather than four times per day, as prescribed. Three days later, she became unresponsive and demonstrated loss of deep tendon reflex [57]. Doctors were unable to determine her exact magnesium intake, but the young lady presented with blood levels of magnesium five times higher than normal [25]. Therefore, it is important for medical professionals to be aware of the use of any magnesium-containing laxatives or antacids. Signs of excess magnesium can be similar to magnesium deficiency and include changes in mental status, nausea, diarrhea, appetite loss, muscle weakness, difficulty breathing, extremely low blood pressure, and irregular heartbeat [5,57-60].

Table 5 lists the ULs for supplemental magnesium for healthy infants, children, and adults in milligrams (mg) [4]. Physicians may prescribe magnesium in higher doses for specific medical problems. There is no UL for dietary intake of magnesium; only for magnesium supplements.

You should call your doctor. When I got on a medication for anxeity, I was told by my doctor that if I experienced anything like that, then I should call her immediatley... I am not sure what is going on with you, but you should definatley call.

it may be causing an imbalance of sodium and potassium which can cause palpitations, contact your doctor