Chlorophyll is an essential green pigment in plants that helps them convert sunlight into energy. It’s also a popular supplement touted for its purported health benefits, including weight loss, detoxification and improved digestion. However, there is little scientific evidence to support these claims. Additionally, chlorophyll supplements may pose certain risks.
For example, chlorophyll supplements can interact with certain medications, such as blood thinners and antacids (1). They can also cause side effects like nausea, diarrhea and abdominal cramps (2). When taken orally, chlorophyll can turn your stool greenish-black, which is harmless but may be unappealing (3).
Additionally, it’s important to be aware that most of the research on the potential health benefits of chlorophyll has been conducted in animals or test tubes. Therefore, it’s unclear whether these effects would occur in humans (4).
Overall, there is insufficient evidence to support the use of chlorophyll supplements for any purpose. If you’re considering taking one, speak with your healthcare provider first to weigh the potential risks and benefits.