Lack of effect: Eventually u can drink coffee & go to sleep--if u withdraw from caffeine u are tired & get a headache if u stay off of caffeine for a period of time u unplug your receptors and coffee/caffeine will again stimulate u.
Answered 1/23/2014
5.8k views
5 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question