Sulfamethoxazole and scary stuff

My 16 yr old started taking Sulfameth for acne, by the 2nd day she was extremly nervous, sick to her stomach, had a slight fever, headache, and was very shaky. By the 4th day she had gained almost 8lbs and started hallucinating!! on top of all the other problems. When we put two and two together and realized it might be the medication and not the flu we took her off it immediately. She is now back to normal after being off it about 5 days.

This is scary stuff!!!

Have been taking for only 1 day (3 doses) and right before lunch, I started feeling like I had extremely low blood sugar. By the time I got downstairs and stood in line to get food, I felt shakier and shakier. As I rushed to sit down and eat something as fast as possible, my hands were shaking as if I had a nervous tick or Parkinson's.

After eating the shaking gradually subsided, however, I have been feeling weird pressure in my eyes as if my pupils are extremely dialated. And I am also feeling a little detatched from my surroundings and a little nervous.

I don't liike the way this medicine makes me feel at all! I am calling my doctor right away to switch meds.

This is scary stuff!!!! How long has this drug been out?! Thanks, FDA!