It is very important that your doctor check your or your child's progress at regular visits to make sure this medicine is working properly and to decide if you should continue to take it. Blood tests may be needed to check for unwanted effects.
You or your child will also need to have your blood pressure and heart rate measured before starting this medicine and while you are using it. If you notice any change in your blood pressure, call your doctor right away. If you have questions about this, talk to your doctor.
You or your child should not use this medicine if you are using or have used a drug for depression, called an MAO inhibitor (MAOI), such as Eldepryl®, Marplan®, Nardil®, or Parnate®, within the past 14 days.
Methylphenidate may cause dizziness, drowsiness, or changes in vision. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
Methylphenidate may cause serious heart or blood vessel problems. This may be more likely in patients who have a family history of heart disease. Check with your doctor right away if you or your child has chest pain, troubled breathing, fainting, or a fast, irregular heartbeat while using this medicine.
Tell your doctor right away if you or your family notice any unusual changes in behavior, such as an increase in aggression, hostility, agitation, irritability, or suicidal thinking or behaviors. Also tell your doctor if you feel, see, or hear things that are not there, or have any unusual thoughts, especially if they are new or getting worse quickly.
This medicine may cause slow growth and weight loss. If your child is using this medicine, the doctor will need to keep track of his height and weight to make sure that he is growing properly.
Methylphenidate may cause a condition called Raynaud's phenomenon. Check with your doctor right away if you or your child has tingling or pain in the fingers or toes when exposed to cold temperatures, paleness or a cold feeling in the fingertips and toes, or a skin color change in your fingers.
Make sure any doctor or dentist who treats you knows that you are using Metadate CD®, Ritalin®, Ritalin LA®, or Ritalin-SR®. You may need to stop using this medicine before you have surgery.
Avoid drinking alcohol while using Cotempla XR-ODT™ extended release disintegrating tablets, Adhansia XR™, Aptensio XR™, Metadate CD®, or Ritalin LA® extended-release capsules, or Quillichew ER™ extended-release chewable tablets.
If you or your child experience a prolonged or painful erection of the penis for more than 4 hours, check with your doctor right away.
Adhansia XR™ contains a yellow dye called tartrazine, which may cause severe allergic reactions. Tell your doctor if you have any allergies (including an aspirin allergy).
If you have been using this medicine for a long time and you think you may have become mentally or physically dependent on it, check with your doctor right away. Some signs of dependence may include:
A strong desire or need to continue using the medicine.
A need to increase the dose to receive the same effects.
Withdrawal effects after stopping the medicine, such as irritability, anxiety, unusual tiredness or weakness, nightmares, trouble sleeping or oversleeping, increased appetite, agitation, or slowing of mental and physical activity.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines, herbal or vitamin supplements, and medicine for appetite control, asthma, colds, cough, hayfever, or sinus problems.