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A member asked:
Is it safe to have 540 mg of caffeine at once?
A doctor has provided 1 answer
Pretty big dose: Cup of coffee has about 130 mg. Monster energy has about 160 mg 5 hour energy drink has about 200 mg spike shooter has about 300 mg. This is a large dose and may make you feel quite disoriented / jittery and give you palpitations / insomnia / anxiety, but a young healthy person can probably tolerate the dose. Possibly safe, bu not recommended.
Answered 9/4/2015
5.3k views
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