Read what I've written about magnesium and B vitamins in other posts.
What are some possible side effects of Requip (Ropinirole)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects: fever, muscle stiffness, feeling light-headed; or slow heartbeat, fainting.
Call your doctor promptly if you fall asleep during a daily activity, if you faint, or if you have hallucinations (hearing or seeing something that is not there). Your doctor may want you to stop taking ropinirole, or take a lower dose.
Other, less serious side effects may be more likely to occur, such as:
mild nausea, vomiting, upset stomach, or loss of appetite, worsened RLS symptoms, early in the morning, diarrhea or constipation, dry mouth, sweating, headache, drowsiness or confusion, sleep problems (insomnia); or agitation or anxiety
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Some people using ropinirole have developed a gambling habit. It is not known whether ropinirole actually causes this effect. Talk with your doctor if you believe you have an unusual urge to gamble while you are taking ropinirole.