Magnesium Citrate with Sodium Saccharin = dumping

I was/am constipated and so I drank about 4 oz of CVS Brand Magnesium Citrate Cherry Flavor -- A Pasturized Sparkling Saline Laxitive.  I used to take this as a constipation remedy before surgery.

It doesn't list sugar as an active or inactive ingredient.  It does have the sweetner "Sodium Saccharin".

I immediately had the worst dumping syndrome that I have had since a week after surgery (I am 6.5 months out now).  I was so sick I wanted to die.  Besides the terrible stomach cramps and all over body sweating I was actually in so much pain I was moaning.  I tried to throw up but I couldn't.  

All I could do is lie down and pray for it to pass.  I felt a little better within 15 minutes and much better within an hour.  Still, the episode wiped me out and I wasn't able to do much the rest of the day.

I thought I was ok with this medicine because there is no sugar listed as an ingredient, but that sodium saccharin nearly killed me. 

And, no it didn't help the constapation either.

I just wanted to share so I could prevent other people from pain like that.