Chlorophyll, the pigment that makes plants green, has gained popularity as a supplement marketed toward women for benefits ranging from clearer skin to weight loss and reduced body odor. Some of these claims have legitimate research behind them, while others are largely anecdotal. Here’s what the evidence actually shows.
Weight Loss and Appetite Control
The strongest research connecting chlorophyll to a female-specific benefit involves weight management. A study of 38 overweight women (ages 40 to 65) tested daily supplementation with green plant membranes, which are rich in chlorophyll and compounds called thylakoids. Women who took 5 grams of the extract before breakfast each day for 12 weeks lost an average of 5.0 kg (about 11 pounds), compared to 3.5 kg (roughly 7.7 pounds) in the placebo group.
The mechanism appears to involve a gut hormone called GLP-1 that signals fullness to your brain. Women taking the supplement had higher levels of this hormone after meals and reported less craving for sweets and chocolate, both on the first day and after 90 days of use. This suggests the effect isn’t just psychological or short-lived. It’s worth noting that the extract used in this study contained the full membrane structure of plant cells, not the liquid chlorophyll drops you see on social media. Whether isolated chlorophyll supplements produce the same appetite-suppressing effect hasn’t been well established.
Skin and Acne Benefits
Topical chlorophyll derivatives have shown promise for acne-prone skin. A pilot study published in the Journal of Drugs in Dermatology tested a gel containing 0.1% sodium copper chlorophyllin complex on 10 subjects with facial acne and large pores. After applying the gel twice daily for just three weeks, all clinical measurements, including acne lesions and pore size, showed statistically significant improvement.
This is a small study, so the results are preliminary. But the anti-inflammatory and antimicrobial properties of chlorophyllin help explain why it might work on breakouts. If you’re considering trying it, look for topical products with copper chlorophyllin rather than drinking liquid chlorophyll and expecting skin changes from the inside out. The topical route puts the active compound directly where it’s needed.
The “Internal Deodorant” Claim
One of the most popular reasons women take chlorophyll is to reduce body odor, including vaginal odor and the smell of sweat. This idea dates back decades, when chlorophyllin was tested as a deodorant for patients with urinary catheters and ostomies. The results were underwhelming. According to the Children’s Hospital of Philadelphia, studies on chlorophyllin supplements for odor reduction did not show statistically significant improvement. The supplement is not recommended for improving scent from sweating or bad breath.
Some people do report feeling “fresher” when taking chlorophyll, but this could reflect increased water intake (most liquid chlorophyll is mixed into a large glass of water), a placebo effect, or simply better hydration improving the concentration of urine. There’s no reliable clinical evidence that chlorophyll changes body odor in a meaningful way.
Chlorophyll and Blood Health
You may have seen claims that chlorophyll helps with anemia or builds blood, which is particularly relevant for women who lose iron through menstruation. The reasoning comes from a genuine structural similarity: chlorophyll and hemoglobin (the oxygen-carrying molecule in your red blood cells) are built from the same ring-shaped building blocks. The key difference is that hemoglobin holds an iron atom at its center, while chlorophyll holds magnesium.
This structural resemblance led to early speculation that consuming chlorophyll could boost hemoglobin production. However, swapping magnesium for iron doesn’t happen through digestion. Your body breaks chlorophyll down before absorbing it, so you’re not getting a ready-made hemoglobin precursor. If you’re concerned about iron levels or heavy periods, iron-rich foods and iron supplements remain far more effective than chlorophyll for addressing anemia.
What Chlorophyll Won’t Do
Social media has attributed a long list of benefits to chlorophyll that outpaces the science. Claims that it “detoxifies” the blood, balances hormones, or improves fertility lack clinical evidence. Your liver and kidneys handle detoxification without help from a plant pigment. And no studies have linked chlorophyll supplementation to changes in estrogen, progesterone, or other reproductive hormones.
Chlorophyll is also sometimes promoted as a cancer-preventing supplement. While some lab studies have shown that chlorophyllin can bind to certain carcinogens and reduce DNA damage in cell cultures, this hasn’t translated into clinical recommendations for cancer prevention in humans.
Dosage and Side Effects
Most chlorophyllin supplements are taken at doses of 100 to 300 mg per day, typically split into three doses before meals. The most common side effects are harmless but surprising: green-colored urine or stool, and occasionally a yellow or black discoloration of the tongue. Some people experience diarrhea.
Chlorophyll and chlorophyllin supplements have not been tested for safety in pregnant or breastfeeding women, so they should be avoided during pregnancy and lactation. If you’re taking liquid chlorophyll drops (the kind mixed into water), check the label for added sweeteners or other ingredients, since formulations vary widely between brands.
The green water you see in viral videos is typically a diluted form of sodium copper chlorophyllin, a semi-synthetic derivative that’s more stable than the natural chlorophyll found in plants. It’s safe for most people in standard doses, but it’s also not dramatically different from simply eating a salad’s worth of dark leafy greens, which deliver chlorophyll alongside fiber, vitamins, and minerals that the supplement alone doesn’t provide.