Common side effects of Ritalin include increased heart rate, insomnia, loss of appetite, and dry mouth. In some cases, it can cause nervousness, irritability, or headaches. Long-term use without proper medical monitoring may lead to dependency or cardiovascular complications. Because Ritalin is a stimulant, it should not be taken by individuals with heart conditions or high blood pressure without consulting a doctor. Abruptly stopping the medication may cause withdrawal symptoms.
