http://www.medications.com/effect/view/36194 I get some stomach cramping from the Z-Pak, but the most disturbing side effect would be the chest pain. I have swollen glands right now and I had vertigo and the doctor told me it was probably a bacterial infection because the gland under my chin is the o Mon, 02 Feb 2009 09:16:55 -0500 http://www.medications.com/effect/view/36194?item=16653 I have the same problem. I cant take PNC and when I take Z-Pack I get severe cramping almost as bad as labor pains for at least 8 to 9 hours straight. My hands and fingers are swollen and I cant take my rings off. I guess it's better than having the nasal http://www.medications.com/effect/view/36194?item=16653