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Dark Greenish Stool in Babies

By Janet Veverka ; Updated April 18, 2017
Babies often produce stools in a variety of colors.

Color changes in a baby's stool are quite common and considered normal. Dark green stool is often found in newborns and even in babies and toddlers from time to time, although the cause is not completely known.

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Newborn babies produce meconium, a thick, tar-like stool that is dark green or black. This stool consists of bile, amniotic fluid and skin cells that have collected in his intestines while in the womb.

Green Is Normal

A variety of colors are normal in babies, including green. Typically, dark green stools will quickly return to normal colors within a couple of days and is nothing to worry about. If a stool contains any red, consult a pediatrician.

Breastfed Babies

In strictly breastfed babies, dark green stool could be a response to something the mother ate, such as a sensitivity, allergy or negative reaction.

Formula-fed Babies

Formula-fed babies produce stool similar to breastfed babies, except it is thicker in consistency. The color changes in formula-fed babies stools are normal as well, unless the color changes to red.

Babies Eating Solids

A dark green stool is often the result of eating something green such as peas, broccoli or spinach.

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About the Author

Based in Vancouver, Janet Veverka is a freelance writer and artist for Pink Olive Designs. She also blogs under the tag IMAGINATIONmama for MommysKnowBest.com. Veverka received her Bachelor of Arts degree in arts management from the University of Missouri-Columbia in 1999 before working in Europe for 5 years and then returning to North America.

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