Possible Benefits and Risks
N-acetyl cysteine (NAC) is a specially modified form of the dietary amino acid cysteine that has various proposed uses.
Nitrates such as nitroglycerin lose some of their effectiveness over time. According to some studies,
but not all,
the supplement N-acetyl cysteine might help these drugs work better. However, there's a catch: the combination of NAC and nitroglycerin appears to cause severe headaches.
Taking NAC with nitroglycerin may be beneficial in some cases. However, unpleasant side effects probably limit the use of this combination.
Angina is too serious a disease for self-treatment. If you have angina, do not take any supplement except on a physician’s advice.