HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

I take vitamin b, and it makes my urine look fluorescent. now, my urine is a normal color. i don't drink enough water. what's happening?

A doctor has provided 1 answer

Don't worry: A very generous amount of riboflavin, which is fluorescent, is put into b-vitamins so it will make the urine shiny and people will be impressed with their medication.

Dr Alves agreed

Answered 7/23/2013

5k views

Thank

Related Questions

A member asked:

My urine is bright yellow almost flourescent and has elevated ketones. I don't take vitamins. Been having upper left abdominal sharp pains and dull.

3 doctors weighed in across 2 answers

A member asked:

I drink a lot of water and don't take any vitamins, but my urine is neon yellow. I recently had a bad kidney infection, could that be related to it?

A doctor has provided 1 answer

A member asked:

Kind of an odd question but if you take a water solvable vitamin supplement and it doesn't seem like you noticeably pee it out (B vitamins for example turning your urine deep yellow) does that mean your body used it all?

5 doctors weighed in across 2 answers

A member asked:

Is it advised against to take 1 packet of vitamin C emergenc. 1000 mg/day? I don't drink any juice, soda, etc.just water and wanted to add that 1xday?

A doctor has provided 1 answer

A member asked:

Can I take vitamins with water and still drink 100% unsweetened grapefruit juice in the course of the day?

3 doctors weighed in across 2 answers

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

My urine is a neon yellow color and I don't take vitamins. What could cause this and should I be worried? I drink water and eat ice all day long
If I drink a gallon of water how many hours before I take my drug screen should I take a b 100 complex vitamin pill to put yellow BK in my urine n will the riboflavin cause me to get a false positive drug screen for THC?
Dark urine with lower back pain, no change in diet , has been drinking lots of water, not medication changes, no vitamins?
Today my urine is fluorescent yellow! I have no other symptoms (pain etc) I am on iron supps and drink a lot of water daily. What could this be?
Sodium levels saturday was 132 today 129 why would they drop? I do not drink water my co 2 is 21.0 vitamin d 33. Did have fatty liver now it is normal

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

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

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
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.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.