Like swelling of the face/throat/tongue or trouble breathing
9 Sep 2009
The symptoms you have described could be the signs of an allergic reaction and you should get medical assistance immediately.
If you experience any of the following serious side effects, stop taking nicotinic acid and seek emergency medical attention:
*an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
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