I wonder if it could be something else that is making you sick. Probiotics really shouldn't affect you that way. Could you have a food intolerance or maybe Celiac's - maybe an allergy to an ingredient in the probiotic? Do you normally have IBS-D or is D new for you?
Maybe it is the type of probiotic you are taking. Is it Acidophilus? Does it have a high culture content (above 1 billion cultures per dosage)? Is it the refrigerated kind? Sometimes if the culture content is high, and your body's not used to it yet, you can get D, cramping and/or gas.
Guess you're not willing to try another probiotic...?
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