Ritalin overdoses can occur when the drug is taken in excess, especially when snorted. You receive a higher dose of Ritalin by snorting it than by swallowing it. When you take high doses all at once, you may experience uncomfortable or even deadly side effects. Prescription pills provide a higher dose of methylphenidate to compensate for Ritalin’s 30% delivery. The dose that actually reaches your bloodstream increases when snorted since it is not intended for snorting. Ritalin is also available in extended-release forms. The term “extended-release” refers to drugs that release a substance over a long period. Chronically ill patients can get relief throughout the day with a tablet taken once. An extended-release pill contains a higher dose of medication than an immediate-release pill. Additionally, the tablets slowly dissolve through digestion and release small amounts of the drug over time. Crushing the pill compromises this system. When a pill is crushed, a greater dose is delivered than can be managed at one time, resulting in an overdose. Overdose symptoms can include heart failure and heart arrhythmias. Some medications can increase serotonin levels and cause serotonin syndrome. Serotonin syndrome includes seizures, panic attacks, and hallucinations.