Chlorophyll

The green pigment behind every "green drink" trend — but the supplement you're actually taking is usually chlorophyllin, a lab-modified relative with its own distinct evidence base.

Important: These statements have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before starting any supplement.

Overview

Chlorophyll is the green pigment that allows plants, algae, and cyanobacteria to capture light energy for photosynthesis. It's found in every leafy green vegetable and is responsible for the deep green color of spinach, kale, parsley, and wheatgrass.

Natural chlorophyll is fat-soluble and unstable, breaking down quickly and absorbing poorly when taken orally. For this reason, virtually all chlorophyll supplements — liquid drops, tablets, and "chlorophyll water" — actually contain chlorophyllin, a semi-synthetic derivative created by replacing chlorophyll's central magnesium atom with copper and sodium. Chlorophyllin is water-soluble, more stable, and the form used in essentially all of the clinical research on this ingredient.

This distinction matters: when you see "chlorophyll" marketed for detox, odor control, or antioxidant support, the evidence behind those claims is almost always chlorophyllin research, not studies on the chlorophyll molecule itself.

What the Research Shows

Internal Deodorant

The most clinically supported use. Small trials in people with fecal or urinary incontinence and colostomy patients found chlorophyllin tablets reduced stool and urine odor compared to placebo. This is a narrower, more specific benefit than general "body odor" marketing implies.

Carcinogen Binding

Laboratory and human biomarker studies suggest chlorophyllin can bind to aflatoxin (a carcinogenic mold toxin found in some grain and peanut crops) in the gut, reducing its absorption. This research is promising but mostly relevant to populations with high aflatoxin exposure, not general supplementation.

Antioxidant Activity

In vitro studies show chlorophyllin has free-radical scavenging properties. Clinical significance in humans taking standard supplement doses is not well established — most of this evidence comes from lab and animal models rather than human trials.

Topical Wound Care

Chlorophyllin ointments have a long history of use for minor wound healing and have shown some evidence for reducing wound odor and supporting healing in topical applications — distinct from oral supplementation.

Dosage & Forms

Liquid Chlorophyllin

1 tbsp in water

Most common form; typically 1–3 times daily

Tablets/Capsules

100mg, 2–3x daily

Used in most odor-control clinical trials

There is no officially established dose — most products follow the ranges used in small clinical trials for odor control (around 100–300mg chlorophyllin daily). Take with food to reduce the chance of GI upset.

Safety & Side Effects

✅ Generally Well-Tolerated

Long history of use, including topical wound care
No serious adverse events reported in trials
Considered safe at standard supplement doses

⚠️ Things to Know

Can turn stool dark green or black — harmless but can mimic GI bleeding on visual exam
May cause mild GI upset, diarrhea, or cramping in some people
May increase skin photosensitivity at high doses
Limited safety data in pregnancy — consult a doctor first

Stacking

🌿 Daily Greens Stack

Chlorophyllin (100mg)
Chlorella or Spirulina
Wheat Grass

Common combination in green superfood blends

🛡️ Antioxidant Stack

Chlorophyllin (100–200mg)
Vitamin C
NAC

General antioxidant support combination

Frequently Asked Questions

Is the chlorophyll in supplements the same as the chlorophyll in plants?

Not exactly. Most supplements use chlorophyllin, a semi-synthetic, water-soluble derivative made by replacing chlorophyll's magnesium core with copper. Natural chlorophyll is fat-soluble and poorly absorbed, so chlorophyllin is used instead for better bioavailability.

Does chlorophyll actually reduce body odor?

There's modest clinical support specifically for chlorophyllin reducing fecal and urinary odor in people with incontinence or ostomies. Evidence for general body odor or breath freshening in healthy people is much thinner and mostly anecdotal.

Will chlorophyll supplements change the color of my stool?

Yes, this is a harmless and well-documented side effect. Chlorophyll and chlorophyllin can turn stool dark green or black, which can be mistaken for gastrointestinal bleeding — mention it to your doctor if you have any related testing scheduled.

Can I get enough chlorophyll from food instead of supplements?

Leafy greens like spinach, kale, and parsley are rich in chlorophyll, but most of it isn't well absorbed without processing. If you're specifically targeting the internal deodorant or antioxidant effects studied in research, supplemental chlorophyllin is the form actually used in those trials.

Sources & References

1. Egner PA et al. (2001). Chlorophyllin intervention reduces aflatoxin-DNA adducts in individuals at high risk for liver cancer. Proc Natl Acad Sci USA, 98(25), 14601–14606.

2. Young RW, Beregi JS. (1980). Use of chlorophyllin in the care of geriatric patients. J Am Geriatr Soc, 28(1), 46–47.

3. Ferruzzi MG, Blakeslee J. (2007). Digestion, absorption, and cancer preventative activity of dietary chlorophyll derivatives. Nutr Res, 27(1), 1–12.

All references are peer-reviewed studies or position stands from reputable organizations.