What Is Chlorophyll?

Chlorophyll is the green pigment found in plants and vegetables

Foods containing chlorophyll

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Chlorophyll is the substance that gives plants their green color. It helps plants absorb energy and get their nutrients from sunlight during the biological process known as photosynthesis.

Chlorophyll is found in many green vegetables, and some people also take it as a health supplement or apply it topically. Its potential health benefits include helping boost energy, heal wounds, and fighting certain illnesses.


In addition to playing an important part in keeping plants and vegetables healthy, chlorophyll has reported health benefits in humans, too. It is considered a natural source of antioxidants.

Some medical studies suggest that it may help manage some skin conditions, body odors, and prevent certain types of cancers.

Topical Application

Research shows that when applied topically, chlorophyll can help heal wounds. The use of chlorophyll for its wound-healing properties has its origins in studies dating back to the 1950s. Some healthcare providers still prescribe a topical medication containing chlorophyll known as chlorophyllin to help promote wound healing and reduce some of the odors associated with open wounds.

Topical chlorophyll has been used in pilot studies for reducing acne, with some positive results. It may potentially work as an anti-aging remedy to reduce the signs of photoaging (aging from sun exposure). Other studies have shown that chlorophyll may be protective against cancer due to its antioxidant effects.

Internal Use

There’s less solid evidence available supporting health benefits of chlorophyll when it's ingested internally as a supplement, either in liquid, powder, or tablet form.

Some researchers have dubbed liquid chlorophyll a potential “blood builder,” referring to its potential to increase red blood cell count and improve their quality. One small study found a benefit when sodium ferrous chlorophyll (this includes iron, which chlorophyll normally lacks) was administered to hemodialysis patients.

Chlorophyll is chemically similar to hemoglobin, a protein component of red blood cells that binds to and carries oxygen around a person’s body. It has been suggested to be potentially beneficial for improving anemia-related symptoms, like fatigue, low energy, and dizziness. However, since chlorophyll lacks iron, it is not beneficial for iron-deficiency anemia.

Chlorophyll has also been shown to enhance the liver’s ability to remove toxins and waste from the body. Chlorophyll’s cancer-treating potential has so far only been tested in animals, but those results show that chlorophyll and its derivatives may help prevent and slow cancer growth. This includes natural chlorophyll consumed via a diet rich in green vegetables.

Experts agree that chlorophyll likely has more health benefits than those that have been identified, including potential body deodorizing effects.

Here are some of the areas that have shown some initial promise, but still need more research:

  • Digestion improvement
  • Constipation relief
  • Inflammation reduction, especially in arthritis
  • Anti-aging benefits
  • Yeast reduction in patients with Candida
  • Increased energy
  • Hormonal balance
  • Fibromyalgia relief
  • Weight loss


Whether or not you decide to take a chlorophyll supplement, experts and dietitians agree that it's not a bad idea for most of us to incorporate vegetables containing chlorophyll into our diets. Dark-green leafy vegetables are often rich in chlorophyll.

Of course, check with your healthcare provider or healthcare professional before drastically changing any dietary habits or adding any supplements.

Chlorophyll-rich vegetables include:

Not a huge vegetable fan, but still want to make sure you're taking advantage of naturally-occurring chlorophyll in your diet? There are other options, such as pistachios, hemp seeds, parsley, basil, and cilantro that are also rich in chlorophyll. Some fruits, like green apples, kiwi, and green grapes can be options, too.

Keep in mind that doing a juice cleanse (consuming pressed vegetable juices) or juicing at home will also likely increase your intake of chlorophyll.


Another way to get more of the substance is by taking a chlorophyll supplement in pill, capsule, or liquid droplet forms. Nutritional supplements that contain chlorophyll, such as greens powder, green tea, wheatgrass, spirulina, barley grass, chlorella, and blue-green algae. 

It’s also been popularized in what’s known as “wheatgrass shot,” which is particularly rich in chlorophyll and often found at juice bars and other health food stores. Chlorophyll, amino acids, vitamins, minerals, and enzymes contribute to the detox properties of wheatgrass.


Though it's generally thought to be non-toxic, it's important to note that there can be some mild side effects associated with ingesting liquid chlorophyll. Some of these reported side effects include: 

  • Nausea
  • Gastrointestinal cramping
  • Diarrhea
  • Discolored (usually green) stools
  • Vomiting

Keep in mind that the U.S. Food and Drug Administration (FDA) doesn’t regulate or recommend a daily allowance for chlorophyll supplements, so if it’s consumed in large amounts or if it is labeled improperly, it’s possible that chlorophyll can be harmful.

You should also check with your healthcare provider if you’re taking any prescription medications, as chlorophyll supplements could interfere with certain drugs, especially those that cause photosensitivity (increased sensitivity to the sun).

A Word From Verywell

Chlorophyll has a variety of potential health benefits, but the evidence for most of these is insufficient and more research is needed. Some people may find that including more chlorophyll in their diet or taking supplements makes them feel better or helps with medical conditions, such as anemia.

Others may find that they'd rather do without some of the side effects of consuming substantial amounts of chlorophyll, such as green-tinged stools. In any case, remember it’s a good idea to discuss adding new health supplements or a new food group with your healthcare provider before actually incorporating them into your routine.

Frequently Asked Questions

  • Can you cause harm to your body by consuming chlorophyll?

    Like most foods and supplements, chlorophyll should not cause harm unless taken in excessive amounts. If you choose to take a supplement, be sure to follow the recommended dosage on the label and remember that supplements are not regulated by the FDA.

  • What types of cancer might benefit from chlorophyll supplementation?

    Though research is ongoing, some studies have shown a benefit from chlorophyll supplements for certain types of cancer, including liver, bladder, and pancreatic.

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12 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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