Accutane is used for acne and has been shown to produce a number of fairly extreme symptoms:
Stop using isotretinoin and call your doctor at once if you have any of these serious side effects:
depressed mood, trouble concentrating, sleep problems, crying spells, aggression or agitation, changes in behavior, hallucinations, thoughts of suicide or hurting yourself;
sudden numbness or weakness, especially on one side of the body;
blurred vision, sudden and severe headache or pain behind your eyes, sometimes with vomiting;
hearing problems, hearing loss, or ringing in your ears;
seizure (convulsions);
severe pain in your upper stomach spreading to your back, nausea and vomiting, fast heart rate;
loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
severe diarrhea, rectal bleeding, black, bloody, or tarry stools;
fever, chills, body aches, flu symptoms, purple spots under your skin, easy bruising or bleeding;
severe blistering, peeling, and red skin rash; or
joint stiffness, bone pain or fracture.
If that is what you are using, perhaps you should google it and look at some of the more respectable sites.
