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Doctor insights on: Metformin Green Poop

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Dr. David Sneid
1,042 Doctors shared insights

Metformin (Definition)

That reduces liver production of glucose- other benefits: can't cause low blood sugar when used alone, likely cariovascular benefit, may reduce complications of diabetes, may reduce cancer risk ...Read more


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I am taking metformin xr, I have noticed it coming out in the stool whole and also I am having mucus that is sometimes blood in it?

I am taking metformin xr, I have noticed it coming out in the stool whole and also I am having mucus that is sometimes blood in it?

Pills in stools!: Finding different pills has been a known fact especially the long acting ones.
See your doctor to change metformin to regular- need to take twice daily. If your symptoms continue metformin has to be discontinued.
There was a hilarious article in an integrated medicine journal about the huge amount of pills which was recovered from a mountain of stools!
eware of SR, XR & all long acting medications! ...Read more

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I take metformin ER. Many times there will be the metformin pill in my stool. It is bright old red and white colored. Is this normal?

I take metformin ER. Many times there will be the metformin pill in my stool. It is bright old red and white colored. Is this normal?

Pill in stool: Barrynews097~ no that means that the pill is not being absorbed at all and so there is no effect on blood sugar. Bring this to attention of Pharmacist and change the brand to NP brand or have Pharmacist substitute to another generic. Thanks ...Read more

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M58, started glucophage (metformin) 500 mg and Norvasc 10 mg per day. Have not passed stool from 36 hrs. Could this be due to these medicines. Thanks?

M58, started glucophage (metformin) 500 mg and Norvasc 10 mg per day. Have not passed stool from 36 hrs. Could this be due to these medicines. Thanks?

No: No, in fact, a common side effect of glucophage (metformin) is diarrhea. Let me suggest that a simple solution is to eat at least 1 cup of a high fiber cereal (Raisin Bran, Fiber One, All Bran) every day. Try to drink plenty of liquids too (avoid dehydration). ...Read more

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My januvia appears undigested, in my stool. I take metformin, glipizide, victoza (liraglutide) and januvia. Is it pointless to take the januvia?

My januvia appears undigested, in my stool. I take metformin, glipizide, victoza (liraglutide) and januvia. Is it pointless to take the januvia?

Maybe: If you are already on victoza, (liraglutide) you don't need to be on januvia. Talk to your doctor about this. See a specialist if needed. ...Read more

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Have had loose stool for about a month now on janumet, (sitagliptin and metformin) blood levels and colesterol good, but stool very runny all the time?

Have had loose stool for about a month now on janumet, (sitagliptin and metformin) blood levels and colesterol good, but stool very runny all the time?

Not uncoomon: Janumet is a combination medication with januvia (sitagliptin) and metformin. Gi side effects are not uncommon with metformin especially at higher doses. ...Read more

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Can metformin cause ulcers? I had diarrhea but there was black/dark liquid (blood? Can't tell) among normal-looking feces. I take victoza (liraglutide) as well.

Can metformin cause ulcers? I had diarrhea but there was black/dark liquid (blood? Can't tell) among normal-looking feces. I take victoza (liraglutide) as well.

Not likely: Although the most common side effect of metformin is diarrhea, it is usually not bloody or dark. Victoza (liraglutide) can cause nausea, occasional vomiting, but not ulcers or bleeding. You should see your doctor if this continues. ...Read more

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Almost 7 weeks pregnant no morning sickness and no breast tenderness. I do feel gasy and constip. But metformin loose stool. You think pregnant ok? Worrie

Almost 7 weeks pregnant no morning sickness and no breast tenderness. I do feel gasy and constip. But metformin loose stool. You think pregnant ok? Worrie

Pregnancy: It is not clear from what you have said, why you are worried about your pregnancy. If you have a specific issue the best thing you can do is to be examined by your obstetrician. ...Read more

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Takin a lots of pain killer (norco, (hydrocodone and acetaminophen) kepra, metformin, stool softener) have a constipation and rash on the face. What shoul I do to help my skin?

Takin a lots of pain killer (norco, (hydrocodone and acetaminophen) kepra, metformin, stool softener) have a constipation and rash on the face. What shoul I do to help my skin?

Side effect: Rash could be side effect of one of the meds. Try to remember time frame of when rash started and if it corresponded to starting one of these meds (like kepra). Talk to your doctor about it as well. Good luck. ...Read more

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I'm taking metformin but I also take the green tea diet pills. Can I take the garcina cambogia pill too? Or will it hurt me?

I'm taking metformin but I also take the green tea diet pills. Can I take the garcina cambogia pill too? Or will it hurt me?

Not Best Options: Given stated issues, best go hf/lc (includes no fruit) & adjust? Victoza (liraglutide) from 3 clicks up to 30/day; far more effective for? Hba1c & body fat than metformin, much less the others. Victoza (liraglutide) can be done zero pain but most docs don't understand. Optimize NMR particle test & goal hba1c? 5.0%. Study: big fat lies, mcgovern's report, science for smart people, taubes, attia, lustig, dietdoctor. Nusi. Org. ...Read more

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Is it ok to take green coffee extract if u take victoza (liraglutide) or metformin?

Is it ok to take green coffee extract if u take victoza (liraglutide) or metformin?

Maybe. Why take it?: Green coffee bean extracts have caffeine, which is a stimulant. It should not affect one's blood sugar much, but nobody knows for sure. There are other plant chemicals in the extract as well. Most likely, green coffee is not well regulated nor well studied, so it may contain uncertain amounts of listed ingredients, plus various amounts of unlisted ingredients. One cannot be sure of its effects. ...Read more

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My nail on my thumb has turned green it use to be yellow before it turned green, I am a diabetic and take metformin twice a day. Do you think I need to have it looked at?

My nail on my thumb has turned green it use to be yellow before it turned green, I am a diabetic and take metformin twice a day. Do you think I need to have it looked at?

Infection / chemical: Green nails can result from a bacterial or fungal infection. On occasion it could result from the chemical or glues use in applying or removing the false nails. Have them evaluated by a professional and get the appropriate treatment. ...Read more

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My nail on my thumb has turned green it use to be yellow before it turned green, I am a diabetic and take metformin twice a day. Do you think I need to have it looked at?

My nail on my thumb has turned green it use to be yellow before it turned green, I am a diabetic and take metformin twice a day. Do you think I need to have it looked at?

Infection / chemical: Green nails can result from a bacterial or fungal infection. On occasion it could result from the chemical or glues use in applying or removing the false nails. Have them evaluated by a professional and get the appropriate treatment. ...Read more

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Every time I take Metformin for pcos I cant keep nothing on my stomach. My bowel even turn green. Now that I won't take it im javing irregular bowel mo?

Every time I take Metformin for pcos I cant keep nothing on my stomach. My bowel even turn green. Now that I won't take it im javing irregular bowel mo?

Side effect: Metfomin is known to have side effects like diarrhea. If you continue to have problem after discontinuing metformin may be a from different cause, have it checked out. ...Read more

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Is it normal to have merformin in your stool I'm taking it for pcos and is trying to conceive?

Is it normal to have merformin in your stool I'm taking it for pcos and is trying to conceive?

Insulin resistance: PECOS is nothing but insulin resistance. This means you need to address lifestyle changes which includes eating more good fats, like seeds nuts, avocado and reduce or cut out refined carbs. Seeing metformin in the stool indicates you have a motility issue and digestive issue and this also needs to be addressed with lifestyle changes. Probiotics will help and cutting out refined sugars. ...Read more

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M58, If metformin does not suit any one then what is next choice? A1c 5.8 but the glucometer is giving varied readings from 118 fasting to 245 p/meal

Lower the Dose: What do you mean by "not suited." If you suffered an allergic rash (which is rare), you're right.

However, if you're experiencing gastric distress and diarrhea--just lower the dose to whatever you can tolerate, be it halves, quarters, or even crumbs. Continue at the reduced dose until you feel comfortable, then gradually increase the dose. You should develop tolerance to it in weeks or months. ...Read more

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Can metformin helps reduce fats?

Can metformin helps reduce fats?

No.: Metformin is given to improve the action of insulin. Insulin is a hormone that aids cells in the uptake of carbohydrates, not fats. ...Read more

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How much metformin should I take?

Maximal effective...: Dose is 2000 mg daily

this is what you should aim for as long as your kidneys are normal, your doctor knows for sure, and

you have no side effects. ...Read more

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Do metformin cause kidneyproblems?

Do metformin cause kidneyproblems?

No: However, it must be given with caution in people who already have kidney problems. Talk to your doctor. ...Read more

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What is the main purpose of metformin?

Insulin resistance: Metformin is a medication which increases sensitivity to insulin. Increasing Insulin sensitivity allows the body to respond to lower levels of insulin, thus helps control blood sugars and also symptoms related to pcos which are exacerbated by increasing Insulin resistance. ...Read more

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When should someone discontinue metformin?

If you can't: Tolerate the gi side effects or if you develope progressive renal impairment. Check w/your doctor. ...Read more

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What could happen if you overdose on metformin 500 mg?

What could happen if you overdose on metformin 500 mg?

Metformin: Nothing is likely to happen if you overdose just once.
I assume you are taking 500 mg Metformin twice a day.
Are you checking your blood sugars and how are they doing? ...Read more

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What to do if I have questions about metformin, please!?

Write them down: And ask your doctor about it! Wikipedia has a good summary about it, and may answer some or your questions! ...Read more

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Could you tell me what happens if a normal person takes metformin?

Generally nothing: Since metformin doesn't actively lower glucose, it just makes you more sensitive to your own insulin, it won't do anything to your blood sugar. Depending upon how much you take, it could cause stomach upset, diarrhea, etc the same as it can in anyone. Why take medication if you don't need it? That's not smart. ...Read more

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What's the side effects of Metformin?

What's the side effects of Metformin?

Many, including: Diarrhea, bloating, stomach pain, gas, indigestion, constipation, unpleasant metallic taste in mouth, heartburn, headache, flushing of the skin, nail changes, muscle pain

Some side effects can be serious. Call your doctor immediately or get emergency treatment if you get:
chest pain or rash ...Read more

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Will taking metformin make me fertile?

It helps in PCOS: Metformin can help patients who do not ovulate due to polycystic ovarian syndrome in some cases. Obviously only take if prescribed and recommended by your doctor. ...Read more

Dr. Walter Futterweit
690 Doctors shared insights

Glucophage (Definition)

Glucophage is a diabetes-related agent which is a kind of ...Read more


Bowel Movement (Definition)

Expulsion of fecal material, food residue and bactrial residue, ...Read more