I read one of the questions and answers about a Warfarin patient concerned about Vitamin K levels in Mrs. Dash. That was useful info. However, my mother's (CHF - also on Warfarin) doctor says that salt substitutes are not good either, because of the high levels of Potassium Chloride. What is your opinion regarding this?
Issues such as these must always be considered on a case by case basis. What might be a good choice for you could spell disaster for someone with Congestive Heart Failure (CHF). Depending on your mother's particular case, her physician may not want her to be getting any extra potassium in her diet. We are usually not as concerned unless our patients have kidney disease, which can impair the body's ability to get rid of excess potassium.
That said, many folks with (CHF) use diuretic medications. Some can raise the level of potassium in the blood and others will lower it. This is because different medications act on the kidney in different ways, with some telling the kidney to hold onto potassium and others releasing it into the urine. This could be another reason for your mother's doctor wanting her to be careful.
Most salt substitutes do use some variation of a potassium "salt" to mimic the action of table salt (sodium chloride). The more popular are mostly made up of potassium chloride. We reviewed a version made with potassium chloride and L-lysine called AlsoSalt. The claim is that the addition of the L-lysine blocks the metallic taste of the potassium chloride.
Salt substitutes contain varying amounts of potassium -- some as little as 300 milligrams (mg) for the AlsoSalt and others as high as 800 mg in 1/4 teaspoon for Nu-Salt. So how much is too much? Again, you should check with a physician before making the choice.
When we give the type of diuretic that causes potassium loss, we generally give between 10 and 20 milliequivalents (mEq) of potassium chloride in pill form. There's about 200 mg of potassium in 10 mEq of potassium chloride so you can see that 1/4 teaspoon of salt substitute might be even more than prescribed by a physician.
Thanks for writing.
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