Chlorophyll Supplements: Benefits, Evidence and Safety
Most chlorophyll supplements contain chlorophyllin, a water-soluble derivative of natural chlorophyll. Human research is limited and sometimes conflicting. A few small or older studies investigated chlorophyllin for specific odour-related conditions, but there is not strong evidence that it reliably reduces ordinary body odour in healthy adults. Claims involving detoxification, weight loss and increased energy are not supported by good human evidence.
Chlorophyll supplements at a glance
The useful distinction is not whether a product is green. It is what form it contains, what outcome was actually studied and whether the evidence applies to the person buying it.
What is usually inside
Many supplements contain sodium copper chlorophyllin rather than unmodified chlorophyll from green plants.
Best-known use
Chlorophyllin has been investigated in a few small studies involving urinary, faecal or trimethylamine-related odour. Results are limited and mixed.
What is not established
There is no reliable human evidence that oral chlorophyll supplements cause weight loss, “detox” the body or increase energy.
What are chlorophyll supplements?
Chlorophyll is the green pigment plants use to capture light during photosynthesis. The material used in supplements is often different from the chlorophyll naturally present in spinach, parsley and other green foods.
Natural chlorophyll
Natural chlorophyll is fat-soluble and relatively unstable outside the plant. Heat, light, processing and digestion can change its structure. Eating green vegetables provides chlorophyll as part of a food matrix that also contains fibre, vitamins, minerals and many other plant compounds.
A concentrated supplement should not be treated as nutritionally equivalent to eating vegetables. They are different products used for different reasons.
Chlorophyllin and sodium copper chlorophyllin
Chlorophyllin is a group of water-soluble derivatives made from chlorophyll. In sodium copper chlorophyllin, copper replaces the magnesium at the centre of the original chlorophyll molecule. This produces a more stable, water-soluble ingredient that is commonly used in supplements and food colouring.
Research papers may use the terms chlorophyll and chlorophyllin differently. When reviewing a study, check the exact ingredient, dose, route of administration and population instead of assuming every green product works in the same way.
| Feature | Natural chlorophyll | Sodium copper chlorophyllin |
|---|---|---|
| Source and form | Green plant pigment found naturally in foods. | Modified, water-soluble chlorophyll derivative. |
| Stability | More sensitive to heat, light and processing. | Generally more stable and easier to formulate. |
| Research relevance | Studied in dietary and laboratory contexts. | Used in several of the small human studies commonly cited for supplements. |
| What to check | Whether the claim relates to whole foods or an extracted ingredient. | The exact dose, product composition and whether the study population matches normal consumer use. |
What does the research say about chlorophyll supplements?
The evidence is narrower than many marketing claims suggest. Most positive findings come from small studies, older clinical contexts, specific medical conditions, topical products or outcomes that do not translate into a general wellness benefit.
| Claim or use | Evidence level | What the evidence actually means |
|---|---|---|
| Body, urinary or faecal odour | Limited and mixed | A few small studies in specific patient groups reported changes, while a randomized crossover study in people with colostomies found no difference from placebo. This does not establish a reliable effect for ordinary body odour in healthy adults. |
| Trimethylaminuria-related odour | Very small study | A small Japanese study investigated copper chlorophyllin in people with reduced trimethylamine metabolism. The sample was too small to justify broad consumer promises. |
| Aflatoxin exposure | Specific context | A randomized trial in a population with high dietary aflatoxin exposure reported a reduction in a urinary aflatoxin biomarker. This is scientifically interesting but not evidence of a general “detox” benefit for UK consumers. |
| Acne and skin appearance | Topical only | Small pilot studies tested topical chlorophyllin formulations. They do not show that swallowing chlorophyll capsules improves acne or skin appearance. |
| Weight loss | No reliable evidence | Research involving thylakoid-rich plant preparations should not be presented as proof that ordinary chlorophyllin supplements cause weight loss. |
| Energy or “detox” | Not established | Humans do not photosynthesise, and there is no good human evidence that chlorophyll supplements increase energy or enhance the body’s normal detoxification systems. |
Does chlorophyll help with body odour?
There is not enough high-quality evidence to say that chlorophyll supplements reliably reduce everyday body odour. The human evidence often cited online comes from small studies in very specific medical situations.
What the positive studies suggest
Researchers have investigated chlorophyllin in incontinent geriatric patients and in a very small group of people with trimethylaminuria, a rare metabolic condition involving trimethylamine odour. Those findings may justify further research, but they cannot be assumed to apply to every type of sweat, breath or body odour.
Why the conclusion remains uncertain
A randomized, double-blind crossover study in people with colostomies found that chlorophyll did not perform differently from placebo in participants’ assessment of odour. The overall research base is old, small and inconsistent.
Body odour can have different causes
Changes in odour can relate to sweat and skin bacteria, diet, medication, hormonal changes, dental problems, infection or an underlying health condition. Persistent, sudden, fishy, fruity or otherwise unusual odour deserves appropriate medical or dental assessment rather than being covered up with a supplement.
Vaginal odour is a separate health topic. A chlorophyll supplement does not diagnose or treat bacterial vaginosis or another vaginal condition. Read our guide to vaginal odour, common causes and when to seek medical advice.
Popular chlorophyll claims that need context
“Detox”
Detoxification is handled mainly by organs including the liver and kidneys. A specific finding involving binding or reducing exposure to one compound should not be converted into a general promise that chlorophyll “cleanses” the body.
Weight loss
There is no convincing evidence that standard chlorophyll or chlorophyllin supplements produce meaningful weight loss. Studies of thylakoid-rich preparations involve a different mixture of plant components.
Energy
Chlorophyll’s role in plant photosynthesis does not mean it converts sunlight into energy in humans. That explanation is biologically incorrect.
Safety, side effects and when to ask for advice
Chlorophyllin products are often tolerated at label doses, but “natural” does not mean risk-free. Product formulations differ, and individual health circumstances matter.
Possible side effects
- Green discolouration of stools or urine.
- Mild nausea, diarrhoea or digestive discomfort.
- Possible sensitivity reactions to chlorophyllin or another ingredient in the formula.
- Potential photosensitivity has been reported in consumer health guidance.
Speak to a healthcare professional first if you
- Are pregnant or breastfeeding.
- Take prescription medication or another copper-containing supplement.
- Have liver, kidney or copper-metabolism concerns.
- Want to use the product for a persistent or unexplained symptom.
How to evaluate a chlorophyll supplement
A trustworthy product page should make it easy to identify the exact ingredient, serving size, warnings and quality standards without promising effects the evidence cannot support.
1. Read the ingredient name
Check whether the label lists chlorophyll, chlorophyllin or sodium copper chlorophyllin. These terms should not be treated as interchangeable when interpreting research.
2. Check the amount per serving
Use the amount per recommended daily serving, not the total weight of the blend or bottle. More is not automatically better.
3. Look beyond the headline claim
Be cautious when a supplement promises detoxification, guaranteed odour elimination, weight loss or increased energy. Review our approach to choosing supplement ingredients and our testing and quality standards.
Explore Ellasie FreshBody
For readers who decide a chlorophyll routine is appropriate for them, FreshBody provides a clearly labelled capsule option. Review the complete ingredients, directions, warnings and current price before purchasing.
Featured chlorophyll formula
Gélules de chlorophylle, persil et menthe pour la fraîcheur corporelle
A two-capsule daily formula containing sodium copper chlorophyllin, parsley and peppermint. Open the product page to review the full ingredients, directions and suitability information.
Food supplement. Read the full product label and suitability information before use.
References and further reading
The evidence base is small. These sources are included so readers and reviewers can see the study populations and outcomes rather than relying on a marketing summary.
- Egner PA, et al. Chlorophyllin intervention reduces aflatoxin-DNA adducts in individuals at high risk for liver cancer. Proceedings of the National Academy of Sciences. 2001. View on PubMed.
- Lamy PP, et al. Effect of chlorophyllin on urinary odor in incontinent geriatric patients. Drug Intelligence & Clinical Pharmacy. 1983. View on PubMed.
- Højer-Pedersen E, et al. Can chlorophyll reduce faecal odour in colostomy patients? Randomized double-blind crossover study. 1989. View on PubMed.
- Yamazaki H, et al. Effects of activated charcoal and copper chlorophyllin on urinary excretion of trimethylamine in Japanese trimethylaminuria patients. Life Sciences. 2004. View on PubMed.
- Sigler ML, et al. Pilot study of topical copper chlorophyllin complex in subjects with facial acne and large pores. Journal of Drugs in Dermatology. 2015. View on PubMed.
- Children’s Hospital of Philadelphia. Can chlorophyll supplements reduce body odour and acne? Evidence and safety overview. Read the clinical overview.
Frequently asked questions
What is the difference between chlorophyll and chlorophyllin?
Do chlorophyll supplements stop body odour?
Can chlorophyll help with vaginal odour?
Does chlorophyll detox the body?
Does chlorophyll help with weight loss?
What side effects can chlorophyll supplements cause?
How should I choose a chlorophyll supplement?
Is this page medical advice?
Editorial and medical review
This guide was written by Andre Minello and medically reviewed by Dr Nurten Abaci Kaplan in accordance with Ellasie’s Medical Review Policy. The review date was .