I Recently Changed From Gemfibrozil To Welchol For Triglycerides. In

I recently changed from gemfibrozil to Welchol for triglycerides. In the past week I have experienced a hissing in my ears to the beat of my heart, heart palpitations, nape pain and sometimes it feels like a knot is going up the back of neck. The pain makes it difficult to turn my head.