0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
ARTICLE |

The Myth of Red Urine due to Phenytoin

Bennett M. Derby, MD; John W. Ward, MS
JAMA. 1983;249(13):1723-1724. doi:10.1001/jama.1983.03330370033026.
Text Size: A A A
Published online

WE WERE recently struck agog to find recorded in a current text of urology that, in the presence of an acid urinary pH, phenytoin (Dilantin, Parke-Davis) will result in a red urine.1 This potentially electrifying information is applicable to thousands of patients in whom the differential diagnosis of hematuria or hemoglobinuria might arise and for whom medical investigation and reassurance might be necessary on a large scale. The phenomenon, however, is not mentioned in many other sources on discoloration of urine and on phenytoin and is unmentioned in Parke-Davis product information. It is unheard of in the practice of neurologists queried, covering a period of practice of many years that encompassed a vast number of individuals with seizure disorder. The author of the cited urology chapter has himself never seen a patient receiving phenytoin who has red urine and was unable to recall the reference from which his information

Topics

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

Figures

Tables

References

Letters

CME
Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
brightcove.createExperiences();