Tenex
Guanfacine or Tenex is a medication used to treat ADD, but it is also used to treat mild to moderate high blood pressure.Tenex seems to work best for hyperactivity, but not so much for distractibility.
Some people who are treated with Tenex experience some side effects such as drowsiness, dry mouth, constipation, mild lowering of blood pressure on standing.
More infrequent side effects include skin problems such as rashes or itching, headache, dizziness, fatigue, insomnia, indigestion, nausea, diarrhea and slow heart rate.