Urine Color Changes With Commonly Use Drugs

Question 1

Rifampin( rifadin ,rimactane )

Answer 1

Bright orange- red

Question 2

Phenol poisoning

Answer 2

Brown; oxidized to quinones ( green )

Question 3

Phenolphthalein ( purgative)

Answer 3

Red- purple , alkaline pH

Question 4

Riboflavin ( multivitamins )

Answer 4

Bright yellow

Question 5

Phenolsulfonphthalein or sulfobromophthalein

Answer 5

Pink- red ,alkaline pH

Question 6

Nitrofurantoin ( furadantin) ( antibacterial)

Answer 6

Brown- yellow

Question 7

Phenazopyridine ( pyridium ) ( urinary analgesic) also CPD. With sulfonamide ( AZO Gantrisin , etc. )

Answer 7

Orange- red ,acid pH

Question 8

Phenindione ( hedulin ) ( anticoagulant) important to distinguish from hematuria

Answer 8

Orange , alkaline , color disappear on acidifying

Question 9

Metronidazole ( flagyl) for trichomonas infection and amebiasis

Answer 9

Darkening reddish brown

Question 10

Anthraquinone laxatives ( senna , cascara )

Answer 10

Reddish, alkaline ; yellow brown , acid

Question 11

Iron sorbitol ( jectofer ) possibly other iron cpd. Forming iron sulfide in urine

Answer 11

Brown on standing

Question 12

Methyldopa ( Aldomet ) anti hypertensive

Answer 12

Darkens; If oxidizing agent present , red to brown

Question 13

Sulfasalazine (azulfidine) (for ulcerative colitis )

Answer 13

Orange-yellow ,alkaline pH