Concerta is a newer, long acting preparation of Methylphenidate – which is the medication name for Ritalin. It has been out for several years in the USA and Canada, and many other countries in the world. Bupropion use has been associated with side effects such as anxiety, dry mouth, hyperventilation, arrhythmia, irritability, insomnia and shortness of breath, MayoClinic.com notes. Consumer information about the OTC stimulant caffeine oral (Enerjets, No Doz, Vivarin)side effects, drug interactions, recommended dosages, and storage information. Read more about Caffeine oral (Enerjets, No Doz, Vivarin). Caffeine is a drug that naturally occurs in the leaves and seeds of many plants. It’s also produced artificially and may be added to certain beverages and foods. The stimulation effects of methylphenidate on the CNS can be additive when used with other chemicals and medications that stimulate the CNS, such as caffeine (found in coffee, tea, or cola drinks), and pseudoephedrine or phenylpropanolamine (found in many cough-and-cold preparations). It has a number of undoubted advantages, among which one can note the low cost, high efficiency, and availability in pharmacies. Because of the complex chemical processes, the active substance penetrates through the intercellular membranes into the medulla oblongata, which acts on the hypotensive, sedative and analgesic effects. Mood disorders such as anxiety, depression, bipolar disorder, borderline personality disorder, and others can practically cripple a person’s quality of life and severely affect their day-to-day ability to function normally, let alone optimally, in society. There is no specific interaction between citalopram and caffeine, Drugs.com reports. However, caffeine ingestion can cause certain side effects, including feelings of agitation, anxiety, restlessness and trouble sleeping, some of the symptoms of depression and anxiety. Methylphenidate is generally well tolerated. The most commonly observed adverse effects with a frequency greater than placebo include appetite loss, dry mouth, anxiety/nervousness, nausea, and insomnia. Lisdexamfetamine is used primarily as a treatment for attention deficit hyperactivity disorder (ADHD) and binge eating disorder; it has similar off-label uses as those of other pharmaceutical amphetamines.