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A member asked:
I drink 10 or more cups of water a day. but i still have tachycardia when i stand up and i am weak, dizzy, out of breath. why am i still orthostatic?
A doctor has provided 1 answer
Low Na: You might have severe electrolyte imbalance .Please have your blood tested for electrolyte abnormality.
Answered 6/24/2014
4.7k views
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Whenever I stand up I have a minute where I'm really dizzy and I have to stop and stand still for it to leave. I can't see properly and my head feels light. This is usually on a hot day, though I always drink lots of water, I always have a drink bottle. C
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Can you still get heat exhaustion (dizziness) even if you weren't sweating much and kept drinking water?
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