I started taking sulfameth on Monday (so 4 days ago). I noticed right after I started taking it that the nausea I felt from the UTI was not going away, my mouth started to get dry, I've had a minor headache constantly since starting it and when I got up in the morning (a couple of hours after taking the pill) I was very shaky and it wouldn't stop until I had eaten something. Then, last night, my blood sugar dropped. I got incredibly nauseated, dizzy, I felt like I was going to faint, I started shaking, I felt panicked and it did not subside until a candy was shoved into my mouth. It also felt like my tongue was a little swollen. Based on what I've seen, this med should be recalled.