Stimulant: Caffeine can be safe in normal dosages if you are healthy. Remember, caffeine is a stimulant and side effects can occur. Caffeine can react with medications you are take. Most common side effects include insomnia, nervousness, restlessness and anxiety. Other side effects can include stomach irritation, nausea, vomiting, increased heart rate and increased blood pressure, and there are more.
Answered 11/28/2017
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