Chlorophyll is the green pigment that allows plants to perform photosynthesis, converting light into chemical energy. This compound has recently gained popularity as a wellness supplement, often consumed in liquid form. Many users believe this natural substance acts as an “internal deodorant.” One of the most common claims associated with these supplements is their ability to combat chronic bad breath, medically known as halitosis, and body odor.
Understanding the Causes of Bad Breath
Halitosis, or persistent bad breath, is predominantly an oral issue, with approximately 90% of cases originating within the mouth. The unpleasant smell is caused by the release of volatile sulfur compounds (VSCs) produced by anaerobic bacteria. These microorganisms reside primarily on the back surface of the tongue, where a low-oxygen environment allows them to thrive.
The bacteria break down proteins from food debris, saliva, and dead cells. This metabolic process results in the creation of VSCs, such as hydrogen sulfide (smelling like rotten eggs) and methyl mercaptan (having a more fecal-like odor). Poor oral hygiene, dry mouth, and gum disease allow these bacteria to flourish, increasing VSC production.
While most cases are oral, a small percentage of halitosis stems from extraoral sources. This includes systemic conditions like sinus infections, respiratory tract issues, or metabolic disorders. These conditions release odoriferous compounds into the bloodstream, which are then expelled through the lungs during exhalation.
How Chlorophyll is Thought to Neutralize Odors
The deodorizing effect attributed to supplements comes not from natural chlorophyll, but from a semi-synthetic derivative called chlorophyllin. Natural chlorophyll is fat-soluble and not easily absorbed by the body. Chlorophyllin, however, is water-soluble and contains a copper atom in place of magnesium, making it significantly more bioavailable. This compound is typically labeled as sodium copper chlorophyllin in supplements.
The theory suggests that once ingested, chlorophyllin travels through the digestive tract and bloodstream to act as an internal deodorizer. It is hypothesized that the molecule works by binding to or chemically altering odor-causing compounds. This action is thought to neutralize VSCs and other malodorous substances before they can be expelled as breath or body odor.
Chlorophyllin is promoted as a systemic solution rather than a simple breath mint. By targeting the source of the odor internally, the supplement aims to reduce the concentration of offensive compounds originating from the gut or metabolic processes.
What the Evidence Says About Efficacy
The belief in chlorophyll’s deodorizing power is not new, tracing back to observational studies conducted in the 1940s and 1950s that suggested it could help with bad breath and body odor. However, these early studies are considered outdated and lack the rigorous methodology of modern clinical trials. Consequently, the scientific community holds a nuanced view on its current use for halitosis.
The strongest evidence for chlorophyllin’s deodorizing effect relates to odors originating in the digestive system, not the mouth. Studies have shown that chlorophyllin (100 to 200 milligrams per day) can effectively reduce fecal and body odors in geriatric patients with colostomies or incontinence. This suggests a localized effect on compounds in the gut.
Large-scale, modern clinical trials specifically investigating chlorophyllin supplements and their ability to significantly reduce volatile sulfur compounds in chronic halitosis are limited and often inconclusive. Some laboratory research suggests chlorophyllin may inhibit the growth of VSC-producing bacteria or directly neutralize the compounds. However, direct human evidence remains sparse.
For the vast majority of halitosis cases, which are caused by bacteria on the tongue and poor oral hygiene, chlorophyllin is not medically proven to be a definitive treatment. While many users consider it a safe, anecdotal remedy, dental professionals do not recognize it as a standard therapeutic approach for chronic bad breath. The current scientific data is insufficient to conclude that chlorophyllin supplements provide a consistent or significant reduction in the VSC levels responsible for most halitosis.
Safe Use and Considerations for Supplements
Chlorophyllin supplements are widely available in various forms, including liquid drops, softgel capsules, and powders. The typical daily dosage found in these over-the-counter products usually ranges from 100 to 300 milligrams. It is always best practice to adhere to the specific instructions provided on the product label.
While generally considered safe for short-term use, users should be aware of potential side effects. The most common issues are mild gastrointestinal upset, such as stomach cramping or diarrhea. Due to its intense color, chlorophyllin can also cause a harmless, temporary dark green staining of the urine and feces.
A less common consideration is photosensitivity, where the supplement might make the skin more sensitive to sunlight. Individuals should exercise caution and use sun protection when spending extended periods outdoors. If persistent bad breath occurs, consulting with a medical or dental professional is advisable, as chronic halitosis can sometimes be a sign of an underlying medical condition requiring specific diagnosis and treatment.