There are certain groups of people who should use caution when it comes to liquid chlorophyll supplements. People with signs of photosensitivity should be cautious, as well as those who take immunosuppressant drugs.
Along with the claims that it has positive effects on the liver and can help prevent cancer, there is also evidence that chlorophyll can help treat and prevent type 2 diabetes. However, people with any of these conditions should consult with a doctor first. Supplements can interfere with medications.