The Effects of Caffeine on Medication for ADD

Vyvanse is a stimulant medication used in the treatment of attention deficit hyperactivity disorder, or ADHD. Like any medication, Vyvanse carries the risk of side effects and drug and food interactions. Caffeine may increase the severity of side effects caused by Vyvanse, states Avoid drinking caffeinated beverages, including coffee, tea and cola; or caffeine-containing foods, like chocolate, to reduce the risk of interaction, advises Discuss Vyvanse use, interactions and side effects thoroughly with your health care provider.

Coffee may interfere with Vyvanse. (Image: Nungning20/iStock/Getty Images)

Gastrointestinal Effects

Vyvanse may cause gastrointestinal side effects in some people. Abdominal pain, nausea, vomiting and lack of appetite may occur. University of Maryland Medical Center states that caffeine may stimulate gastrointestinal upset by increasing stomach acid content. Combined, caffeine and Vyvanse may increase the severity of gastrointestinal effects, according to Kaiser Permanente, which suggests limited caffeine consumption while taking Vyvanse to reduce side effects.

Cardiovascular Effects

Vyvanse acts as a stimulant and may raise heart rate and blood pressure, leading to a risk of sudden heart attack or stroke, according to You may experience increased pulse, heart palpitations or increased blood pressure while using the medication, which may worsen if you also consume caffeine. warns that you should seek medical attention if you experience a fast or irregular heart beat while taking Vyvanse, to prevent possible complications.

Central Nervous Effects

Some people experience increased stimulation to the central nervous system while taking Vyvanse, which may become worse if caffeine is consumed. Vyvanse stimulates areas of the central nervous system to calm hyperactivity and increase attention span, according to Some people, however, may notice an increase in nervousness or restlessness while taking Vyvanse. Additional symptoms include insomnia, irritability or nervousness.

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