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From the cardiovascular system: tachycardia, arrhythmia, bradycardia, transverse heart block, cardiac arrest, peripheral vasodilation, collapse, pain in the heart, increased or decreased blood pressure, slowed heart conduction

While copper peptides are unlikely to reverse graying that has already occurred, maintaining adequate copper levels in the scalp may help support natural pigment production for longer

Make sure to eat foods rich in vitamin B12 every day

When the body lacks adequate B12, it struggles to produce sufficient red blood cells, leading to decreased oxygen delivery to tissues and organs, resulting in fatigue, weakness, and lethargy