U.S. doctors online nowAsk doctors free
Madera, CA
A 34-year-old male asked:

why do i get headaches after taking vitamin b complex?

2 doctor answers3 doctors weighed in
Dr. Bennett Machanic
Neurology 52 years experience
Unusual, but: Some folks do get either dull or full blown migraines after ingestion of high dose vitamin b meds. You may do better by taking lower dose twice daily, but might confer with your doctor about headaches if they are a problem associated with other situations.
Dr. Powlin Manuel
Allergy and Immunology 51 years experience
Nonspecific: Taking vitamin b complex if taken in usual prescribed doses should not cause headache. If taken in mega doses as some do, it can cause headache, especially the Niacin (b3) which can be associated with altered pain sensation.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Talk to a doctor
$30 per visit with

Similar questions

A member asked:

Do I have to feed my baby formula to make sure he is getting the right vitamins?

7 doctor answers9 doctors weighed in
Dr. Kathleen Forcier
Specializes in General Practice
Yes: Breastmilk is a near perfect food for baby. The only thing it's missing is vitamin d, so breast fed babies should get 400 iu of vitamin d a day (1 ml of poly-vi-sol or d-vi-sol). As long as mom is eating a healthful diet and your pediatrician thinks your baby is growing well, you shouldn't have to supplement with formula. Around 4-6 months start giving your baby rice cereal for extra iron.
A 44-year-old member asked:

How do I choose a pre-natal vitamin?

2 doctor answers4 doctors weighed in
Dr. Jeff Livingston
Obstetrics and Gynecology 22 years experience
The one you like: There are hundreds of brands of prenatal vitamins. My suggestion to patients is to try a few and find one you like. The best vitamin is the one you will actually take. All contain Folic Acid which is important. Some contain stool softeners which is helpful for pregnancy constipation. Some contain DHA so you do not have to take a separate pill.
A 22-year-old member asked:

Is it safe to take vitamin C while pregnant?

2 doctor answers5 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctoranswered
A US doctor answeredLearn more
Yes: In recommended standard doses, yes. You probably already have enough in your prenatal vitamin. Taking "more" vitamins and minerals in the form of supplements does not improve health.
A 27-year-old member asked:

Is it possible to take too many prenatal vitamin?

2 doctor answers4 doctors weighed in
Dr. Megan Bird
Obstetrics and Gynecology 19 years experience
Yes: Prenatal vitamins contain a few vitamins that you can take too much off. Vitamin a is the biggest concern. In addition, most vitamins contain iron which can make you constipated.
A 32-year-old member asked:

What is the best vitamin C supplement?

1 doctor answer6 doctors weighed in
Dr. Randy Baker
Holistic Medicine 40 years experience
Lypo-Spheric C: Until recently i would have said most vitamin c is created equal, but a relatively new formulation called lypo-spheric c is much better absorbed and can cross cell membranes better. See http://www.Livonlabs.Com/ it is pricier than other forms of c, but if you are motivated you can make your own liposomal vit c at home: see http://www.Quantumbalancing.Com/liposomalc.Htm.
Dr. Peter Nefcy
Dr. Peter Nefcy commented
Radiology 39 years experience
After searching on their web sites, I can tell anyone who is interested that Lypo-Spheric C does not contain ANY vitamin C. Sodium ascorbate sold as "vitamin C" is not vitamin C and does not have all the components of complete vitamin C. It may be digested easier, but will not help your health or well being. The same is true for most ascorbic acid and sodium acetate products sold in the USA.
Apr 26, 2016

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Talk to a doctor
$30 per visit with
Last updated Jun 1, 2020

People also asked

Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$30 per visit with


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.