Helped Over 500,000 patients with 98%+ satisfaction.

Connect & Get Personalized 1-to-1 Answers from Expert Doctors

DoctorSpring > Question Home

Headache after taking lots of water. What to do?

Resolved Question:

My boyfriend weighs 280 pounds and this morning he drank about 4 bottles of water within an hour. Later he got a really bad headache but also didn't eat all day. He took some ibuprofen and went to sleep but when he woke up he still had a slight headache. Should we be concerned?

Category: Internal Medicine Specialist

Ask Your Own Question

Category: HIV- AIDS Specialist
 27 Doctors Online

Thank you for your query at
I understand your concern.
Did he have any episode of loose stools or diarrhea before he drank 4 liters of water? Or any history of dehydration?
Headache could be due to stress/ dehydration/ migraine/ secondary to long periods of work.
Does he have any medical history of cardiac ailments/ hypertension?
Feel free to discuss further,

Patient replied :

No he has none of any of those questions you asked me. He just wants to make sure he doesn't have water intoxication.

Thank you for your follow-up.
No, you need not worry about water intoxication/ dilutional hyponatremia.
Even though not a lot of research has been done in this condition, but available papers suggest that a man will be at risk of dilutional hyponatremia, if he consumes 6 liters of water within 30 minutes, and his weight is not more than 150-180 pounds.
So considering his body weight, it should not be a problem.
Feel free to discuss further,

Dr. Jaydeep Tripathy
Category: HIV- AIDS Specialist
MBBS from Sri Ramachandra University in December 2011
M.Med (Family Medicine) - TNMGR University, Chennai
MBA-MPH in Public Health in March 2016, SRM University
Finished AFIH in March 2016, SRM University
MRCP ( UK ), Internal Medicine, Royal College of Physicians, June 2016
Fellowship in Diabetology from Martin Luther University in January 2017

Currently Resident Physician, in MD Radiodiagnosis - Kamakshi Memorial Hospital, Chennai
Dr. Jaydeep Tripathy and 4 other Medical Specialists are ready to help you

Users who read this, also read:

Make informed and better medical decisions.

Join the 500,000 people who found a smarter, quicker way to get Answers, Recommendations & Expert Opinions.

Expert Doctors at fingertips

Recommendation on next step. Second-opinion.Multi-specialty.

Save Time

Average time for answers: 6 hours.

Save Money

$35 for typical specialist consult vs. $120 for a local appointment.

Free Follow-ups

Clarify, ask further questions for free in private conversation.

100% Satisfaction

Money back guarantee for the 1st reply. MEDNET Quality Board.

Start My Consultation



Doctor Spring is a novel online Doctor consultation platform where you can get your medical questions answered by leading Doctors. Just Submit your question and rest assured that you will consult a Doctor easily. Once you submit the question, the Doctor from the concerned specialty will reply within hours. You can always ask more questions or add details with follow-up question options and make it an online doctor chat. You may use this service to consult a specialty or for getting medical second opinion. All paid services come with a MEDNET quality assurance and 100% money back guarantee.

DoctorSpring in news