Does Potassium Cause Stomach Upset And Dizziness?

I take furosimide 60mg daily (because of fluid retention in the abdomin) - with potassium 15mg daily - does potassium cause stomach & abdominal upset - sometimes severe - & does potassium also cause stomach upset - & do they both cause dizziness - I have these side effects in the extrreme - & it spreads to the lower back - is sometimes so acute i can barely walk - al of the side effects information I ve consulted corroberate this although clearly not everyone experiences the same side effects - I would appreciate your guidance - thank you - Ian