# Are There Foods I Could Eat That Would Change The Color Of My Urine, Feces, Or Semen? **URL:** \ **Category:** Factual Questions\ **Created:** [November 30, 2004, 4:11pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340 "2004-11-30T16:11:48Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![bordelond](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/bordelond/32/150_2.png) [@bordelond](https://boards.straightdope.com/u/bordelond)\ **Post date:** [November 30, 2004, 5:37pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/21 "2004-11-30T17:37:07Z")
> [@Mr. Biggles](#): > > Remind me to not get into your secret Santa pool. That’s a not a Baby Ruth floating over there. :eek: ---
**Author:** ![yBeayf](https://avatars.discourse-cdn.com/v4/letter/y/e274bd/32.png) [@yBeayf](https://boards.straightdope.com/u/yBeayf)\ **Post date:** [November 30, 2004, 5:47pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/22 "2004-11-30T17:47:49Z")
> [@](#): > > Also, pryidium (I believe this is available OTC in drug stores, but I’m not recommending you take it) for bladdar irritation will turn urine orange. That’s not the only thing it turns orange… ---
**Author:** ![plnnr](https://avatars.discourse-cdn.com/v4/letter/p/7ea924/32.png) [@plnnr](https://boards.straightdope.com/u/plnnr)\ **Post date:** [November 30, 2004, 6:10pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/23 "2004-11-30T18:10:16Z")
Grape Kool-Aide will turn your poop green. I don’t think anything you eat will change the color of your semen, but it will change the taste (as will your overall health). ---
**Author:** ![Loach](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/loach/32/350_2.png) [@Loach](https://boards.straightdope.com/u/Loach)\ **Post date:** [November 30, 2004, 6:16pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/24 "2004-11-30T18:16:53Z")
The liquid in a chem-light goes out like it goes in. It is completely non-toxic (according to the package) but tastes nasty and oily. Oh to be young and dumb and living in the barracks again. ---
**Author:** ![CrazyCatLady](https://avatars.discourse-cdn.com/v4/letter/c/dfb087/32.png) [@CrazyCatLady](https://boards.straightdope.com/u/CrazyCatLady)\ **Post date:** [November 30, 2004, 6:48pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/25 "2004-11-30T18:48:39Z")
Urimax (which contains some methylene blue, I believe) will turn your piss blue. If you’ve been drinking lots of water, it’s about the color of the frowning smilie. If you haven’t, it’s more of an aqua. And I never tried it, but if you ate beets or something, you could probably have purple pee. ---
**Author:** ![lieu](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@lieu](https://boards.straightdope.com/u/lieu)\ **Post date:** [November 30, 2004, 7:04pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/26 "2004-11-30T19:04:29Z")
Pretty much whatever the Homeland Security Threat Condition Color is for the day will represent the color of my poop. ---
**Author:** ![Burrido](https://avatars.discourse-cdn.com/v4/letter/b/3be4f8/32.png) [@Burrido](https://boards.straightdope.com/u/Burrido)\ **Post date:** [November 30, 2004, 7:11pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/27 "2004-11-30T19:11:10Z")
> [@micahjn](#): > > I think high doses of vitamin B will turn your urine green. Hmm, that would explain why my urine is neon green after I switched Protein Supplements. ---
**Author:** ![Gotterfunken](https://avatars.discourse-cdn.com/v4/letter/g/58956e/32.png) [@Gotterfunken](https://boards.straightdope.com/u/Gotterfunken)\ **Post date:** [November 30, 2004, 9:28pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/28 "2004-11-30T21:28:21Z")
I see that no one’s even addressed the semen part of the question. I don’t think there’s any food that will change the color of semen, though different foods can affect its taste. I suppose if you had an internal injury, you could ejaculate blood, but I don’t think that would be a pleasant experience. ---
**Author:** ![yBeayf](https://avatars.discourse-cdn.com/v4/letter/y/e274bd/32.png) [@yBeayf](https://boards.straightdope.com/u/yBeayf)\ **Post date:** [November 30, 2004, 10:22pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/29 "2004-11-30T22:22:48Z")
> [@](#): > > I don’t think there’s any food that will change the color of semen, though different foods can affect its taste. As I alluded to before, pyridium will turn semen orange. I suspect, though, that this is solely due to the semen picking up orange coloration as it passes through the urethra. ---
**Author:** ![bubastis](https://avatars.discourse-cdn.com/v4/letter/b/d07c76/32.png) [@bubastis](https://boards.straightdope.com/u/bubastis)\ **Post date:** [November 30, 2004, 11:29pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/30 "2004-11-30T23:29:52Z")
regular intake of B complex vitamins will turn urine bright yellow, making your lavatory reminiscent of the pulp fiction briefcase. And as a true irishman, i can assure you that regular intakes of guinness turns ones faeces- you guessed it- jet black. ---
**Author:** ![MLS](https://avatars.discourse-cdn.com/v4/letter/m/919ad9/32.png) [@MLS](https://boards.straightdope.com/u/MLS)\ **Post date:** [November 30, 2004, 11:39pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/31 "2004-11-30T23:39:44Z")
I’m surprised no one has mentioned Pepto Bismol. Black poop. Also, if you use the chewable tablets, darkens your teeth. Nice stuff, but it works. ---
**Author:** ![aruvqan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/aruvqan/32/2891_2.png) [@aruvqan](https://boards.straightdope.com/u/aruvqan)\ **Post date:** [November 30, 2004, 11:40pm UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/32 "2004-11-30T23:40:09Z")
I know tobramyicin will turn piss brown, but I dont know what the other meds were that turned it blue, orange, green, red and purple were…that was a very technicolor 2 weeks, and _very_ amusing to a 6 year old…I never knew _what_ color was going to be coming out of anywhere :eek: 😃 ---
**Author:** ![WhyNot](https://avatars.discourse-cdn.com/v4/letter/w/c77e96/32.png) [@WhyNot](https://boards.straightdope.com/u/WhyNot)\ **Post date:** [December 1, 2004, 12:03am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/33 "2004-12-01T00:03:10Z")
> [@Skopo](#): > > I see that no one’s even addressed the semen part of the question. > > I don’t think there’s any food that will change the color of semen, though different foods can affect its taste. > > I suppose if you had an internal injury, you could ejaculate blood, but I don’t think that would be a pleasant experience. OK, I have to spoiler this, 'cause it’s way, way, TMI: The acupuncturist I worked for had a patient who had a severe problem with erections - he couldn’t get rid of them. He was masturbating 20 or more times a day, had long since ceased to orgasm or feel good doing so, and eventually started ejaculating blood. Yes, thankfully, she was able to help the poor fellow. Took two treatments and he was fine. And no, no needles in the penis. My prenatal vitamins turn my pee a shocking Mountain Dew yellow. What’s really weird is that the color change happens within 20 minutes of taking them - can they really be digested that fast? ---
**Author:** ![Manduck](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/manduck/32/256_2.png) [@Manduck](https://boards.straightdope.com/u/Manduck)\ **Post date:** [December 1, 2004, 12:05am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/34 "2004-12-01T00:05:30Z")
Patak’s brand tandoori paste, used as instructed on the label, produces bright pink feces. Fluorescent, almost. ---
**Author:** ![ntcrawler](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@ntcrawler](https://boards.straightdope.com/u/ntcrawler)\ **Post date:** [December 1, 2004, 12:23am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/35 "2004-12-01T00:23:20Z")
Other effective poop and peepee coloring agents: charcoal tablets will turn your poop jet black. green tea - at least 2-3 cups in one day will turn your urine a bright yellowish-green or even pure bright green if you consume enough. I swear if Uncle Cecil was reading this he’d shake his head in shame at us teeming millions 🆒 ---
**Author:** ![HMS\_Irruncible](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/hms_irruncible/32/7394_2.png) [@HMS\_Irruncible](https://boards.straightdope.com/u/HMS_Irruncible)\ **Post date:** [December 1, 2004, 12:24am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/36 "2004-12-01T00:24:28Z")
Threads like this are why I plan to pay the registration fee. Vanadium supplements will turn your feces blue. “Vitamin B15” (better known as calcium pangamate) will turn your urine gold, almost orange. Red grape juice or wine will turn your feces green. Actually substitute “your” with “my”, as these are all freely volunteered personal anecdotes. ---
**Author:** ![Elvez](https://avatars.discourse-cdn.com/v4/letter/e/8491ac/32.png) [@Elvez](https://boards.straightdope.com/u/Elvez)\ **Post date:** [December 1, 2004, 2:41am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/37 "2004-12-01T02:41:01Z")
Red Vines. Make my poo red. And even still I can’t bring myself to stop eating them. The fact that they come in 100-pack buckets is a problem for me. ---
**Author:** ![Wesley\_Clark](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/wesley_clark/32/20581_2.png) [@Wesley\_Clark](https://boards.straightdope.com/u/Wesley_Clark)\ **Post date:** [December 1, 2004, 3:10am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/38 "2004-12-01T03:10:23Z")
Dinitrophenol can turn your semen greenish-yellow. Thats about all I can come up with that hasn’t already been covered. ---
**Author:** ![LifeOnWry](https://avatars.discourse-cdn.com/v4/letter/l/96bed5/32.png) [@LifeOnWry](https://boards.straightdope.com/u/LifeOnWry)\ **Post date:** [December 1, 2004, 3:19am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/39 "2004-12-01T03:19:35Z")
Almost anything very high in iron will turn your poop black. Be careful if you’re experimenting wildly, because black stools may also be indicative of internal bleeding. ---
**Author:** ![Bad\_Samaritan](https://avatars.discourse-cdn.com/v4/letter/b/ac8455/32.png) [@Bad\_Samaritan](https://boards.straightdope.com/u/Bad_Samaritan)\ **Post date:** [December 1, 2004, 3:43am UTC](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340/40 "2004-12-01T03:43:46Z")
A couple of bowls of Fruit Loops cereal will turn your shit green. [Previous page](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340.md?page=1) [Next page](https://boards.straightdope.com/t/are-there-foods-i-could-eat-that-would-change-the-color-of-my-urine-feces-or-semen/277340.md?page=3)