Get emergency medical help if you have signs of an allergic reaction to Quillivant XR: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
signs of heart problems - chest pain, trouble breathing, feeling like you might pass out;
signs of psychosis - hallucinations (seeing or hearing things that are not real), new behavior problems, aggression, hostility, paranoia;
signs of circulation problems - numbness, pain, cold feeling, unexplained wounds, or skin color changes (pale, red, or blue appearance) in your fingers or toes;
a seizure (convulsions);
muscle twitches (tics);
changes in your vision; or
penis erection that is painful or lasts 4 hours or longer (rare).
Methylphenidate can affect growth in children. Tell your doctor if your child is not growing at a normal rate while using this medicine.
Common Quillivant XR side effects may include:
excessive sweating;
mood changes, feeling nervous or irritable, sleep problems (insomnia);
fast heart rate, pounding heartbeats or fluttering in your chest, increased blood pressure;
loss of appetite, weight loss;
dry mouth, nausea, stomach pain; or
headache.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Quillivant XR side effects (more detail)
