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Methylene blue will color your urine blue or green. (Anne Helmentine)Have you ever wanted to color your urine or wondered what causes urine to become colored? If so, you're in luck, because I have the answer! Here's a little applied color chemistry for your entertainment and experimentation pleasure:

Violet - I'm going out on a limb here, but I suspect you could get violet or purple urine if you combined beets with methylene blue.

Blue - Methylene blue will turn your urine blue or greenish-blue. It can also color the whites of your eyes blue. The coloration of both urine and eyes is reversible. At one time, methylene blue was considered to be an effective treatment against malaria. As far as urine colorants go, this one is considered to be reasonably safe to eat, though you should be aware some people are allergic to methylene blue. Food coloring may turn your urine blue. A rare, inherited disease known as porphyria can cause blue urine. King George III's blue urine may have been attributable to porphyria.

Green - Asparagus will turn urine green and also will give it a very strong odor. Food coloring can turn your urine green, as can certain medications.

Yellow - That would be the normal color, so I'm guessing this won't be a problem.

Amber - Dark golden urine often results from dehydration (not drinking enough water). A very dark color might indicate the presence of bile in urine, which is symptomatic of a medical condition.

Orange - Eating rhubarb or senna can turn your urine orange. Senna is a dangerous herb to mess with. Stick with rhubarb.

Red - Eating beets or blackberries can turn your urine red.

Pink - Pink can result from a urinary tract infection or from eating smaller quantities of beets or blackberries.

Brown - Brown urine results from a kidney dysfunction (bad), jaundice, or from an overdose of the herb Goldenseal (also not good). You should probably avoid this color, if at all possible.

Black - As far as I know, you only get this from Blackwater Fever, which is associated with malaria. The black color comes from massive death of your blood cells, leading (usually) to the victim's death. Black is not a good color for your urine.

Milky or Cloudy - This results from blood, protein, or pus in the urine and usually indicates an illness. I didn't see a means of achieving it by eating or drinking something non-toxic.

Clear - All it takes to achieve clear urine is to drink plenty of water. Don't go overboard, since even too much water can be bad for you.

If you decide to try any of these out for yourself, be sure to read the safety information that accompanies the chemicals and use common sense. If you are concerned you have colored urine because of an illness, check out the causes of colored urine over at WrongDiagnosis.com.


May 22, 2009 at 3:47 pm
(1) michelle says:

I woke up this morning with orange urine. I scared the piss out of me.(pun) Anyhow, the lady at the health food store never warned me about the possibility of orange urine by consuming Senna.

You mentioned that Senna is dangerous. I want to know why. I have not been able to obtain that info. Please assist.

Thank you

September 5, 2011 at 9:38 am
(2) Jack says:

Thank you for the pun clarification.

March 7, 2010 at 10:29 pm
(3) Kassidy says:

what is seena anyways?

April 13, 2011 at 9:18 am
(4) Lamort DeLioncourt says:

The sennas are typically shrubs or subshrubs, some becoming scandent when growing into other vegetation. Some are herbs or small trees.

Side Effects of Senna consumption
yellow-brown discoloration of urine

If you have any of the following symptoms, stop taking stimulant laxatives and call your doctor immediately:
bloody stools
severe cramping
unusual tiredness
rectal bleeding

September 26, 2011 at 4:13 pm
(5) aj says:

When I drink juices during the day, my urine is basically light yellow to clear, but when I drink the water from my faucet, my urine is an amber color. I have water furnished by the city, so it should be clean, but I think there is something about the plumbing that isn’t right. The water out of my faucet tastes better since I put a new one in, but i still have the same lines coming to it and am still getting dark urine. At least the water isn’t making me sick anymore. Can someone please tell me why this happens when I drink the water from my tap? Thank you.

January 6, 2012 at 10:44 am
(6) anunomus says:

You probably should include a warning here — Methylene Blue reacts strongly with SSRI’s and any serotonergic drugs (google interactions) and might cause a potentially fatal serotonin syndrome.

February 11, 2012 at 9:39 pm
(7) lionel ducote says:

I guess I’ll start paying attention!! How about multiple symultanous colors. you know like tooth paste. “Apples and Oranges”??

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