Quite true. I am n a Magnesium Glycinate supplement because I have low sodium which causes this and it also triggers low potassium. I also take a potassium supplement each day. I take blood pressure medication a=which causes the sodium deficiency and subsequent Mg & K deficiencies.I've been n the BP meds so long now that it appears that my body is dependent now. I have tried stopping them but I end up with high BP again that won't come down. I'm a perfect return customer :(