Lasix is causing cramps in arches of my feet... what should I do?

I have the same issues, right in the arches and it causes my toes to curls inward, it is very painful. I do not know how to stop them but I do know that when I take my Lasix it seems to happen more often. It does happen at times without the lasix, ithas to be some kind of defiency. I got these pills from amazon that guarantee no more cramps and it seemed to help a lot. I wish I knew what causes them because they are way painful and last anywhere from 10 to 30 minutes sometimes to get rid of them.

It sounds like you have your potassium under control. I eat a banana at least 3 times a week and my doctor tests my levels every 6 months and adds potassium if needed.
I also had the cramping you spoke of. I take 400mg of magnesium for it. No more cramping. And keep your electrolytes up. As easy as a bottle of Gatorade several times a week. I also take 500mg of calcium with D per my doctor. Good luck.

Usually everyone's response to cramping is low K+, but it's not always the case. I get severe cramping in places you didn't even know had muscles and my K+ runs high normal and even high enough I have to drink something to bind the K+ to it to release it from my body. What can cause cramping can simply be dehydration. Or also could be an imbalance of your calcium/mag. but I find it mostly to be dehydration which if I drink some water the cramping will subside.

I've taken Lasix for years and my potassium levels have been in the normal range when tested and when i get any type of muscle cramps i take a little bit of salt from the salt shaker and dissolve it in my mouth. In less than five minutes the cramps are gone.

Please consult your physician immediately. One potentially-harmful side effect of Lasix is that it decreases serum potassium levels. Cramps is one of the first indications of low potassium. The big issue with potassium is that is the primary electrolyte involved in the conduction system of the heart--bottom line is that too much or too little potassium can cause very potentially-debilitating dysrhythmias. Do not, however go out and buy some potassium supplements and start taking them without consulting your physician. He will likely order blood work to determine your exact potassium level, and advise you on taking a supplement or increasing dietary intake of potassium based on your labs. All patients are individuals, and their care/treatment must be individualized according to their needs. Don't freak out--But DO call your doctor. Accurate assessment of your K+ levels via bloodwork is the only safe way to address this issue.

This is a fine line we are talking about. If you have been on Lasix for two weeks have another blood test taken to see your current potassium level is correct. Everyone responds differently. I would be careful with taking more than what the doctor ordered as lasix is hard on the kidneys. Many people use the thyizides medications as they do the same job without hurting the kidneys. ie: Hydrochlorothiazide.
You might also drink tonic water to calm the cramps too. Drink it when you have the cramps.