11 doctors weighed in:

Is it safe to take caffeine pills and energy drinks together?

11 doctors weighed in
Dr. Leonard Lado
Psychiatry
4 doctors agree

In brief: Caffeine and ED

Consuming 4 to 12 mg/kg of caffeine has been associated with undesirable symptoms, including anxiety and jitteriness.
Headache and fatigue, commonwithdrawal symptoms, can occur after short-term, high-dose use. Caffeine intoxication is a clinical syndrome of nervousness, irritability, anxiety, insomnia, tremor, tachycardia, palpitations, and upset stomach. Seifert et al 2011. Its high risk behavior

In brief: Caffeine and ED

Consuming 4 to 12 mg/kg of caffeine has been associated with undesirable symptoms, including anxiety and jitteriness.
Headache and fatigue, commonwithdrawal symptoms, can occur after short-term, high-dose use. Caffeine intoxication is a clinical syndrome of nervousness, irritability, anxiety, insomnia, tremor, tachycardia, palpitations, and upset stomach. Seifert et al 2011. Its high risk behavior
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