AD/HD responds well to stimulant medications such as Adderall or Ritalin. Many people experience side effects from these medications such as increased anxiety and anger, decreased ability to sleep and appetite, uncomfortable physical symptoms and eventual tolerance requiring increased dosages. However for some, the benefits outweigh the side effects. Talk to your doctor about medical options.
Natural option include strenuous exercise 5 times per week for 30-45 minutes, diet and schedule changes. When nutrition enters the discussion the research becomes controversial. Many case examples have been presented but more solid empirical study is still needed. Initial evidence suggests a high protein diet, including supplementation with Omega-3 oils has some benefit in reducing the symptoms of AD/HD.
For some individuals nutritional changes to eliminate allergies or kill off systemic yeast infections may result in enough relief that symptoms are no longer significantly problematic. Significant controversy about such alternative techniques is seen in the community. Strong statements on either side of the argument should be tempered to allow creative solutions for each individual. Doing a little research on the Internet for topics such as Candida (systemic yeast), Amen Clinic, NAET (allergy elimination) or medications such as Adderall, Dextrostat, Wellbutrin, etc. will give you a quick introduction into the controversy.
Biofeedback techniques such as the Quick Coherence Technique and use of the emWave (described in the video on the Stress and Anxiety page) can be extremely helpful in learning mental regulation necessary to compensate for AD/HD.