Chlorophyll is generally considered to be safe and well-tolerated, although proper safety analyses have not been done. According to case reports, oral use has been associated with green-colored stool and increased skin sensitivity to sun exposure (photosensitivity),[1][2] and topical use may cause dermatitis.[3]
What are chlorophyll’s main drawbacks?
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•Last Updated: May 16, 2025
Chlorophyll is generally safe and well tolerated, but it may cause green-colored stool, increased photosensitivity, and dermatitis in some cases. Proper safety analyses have not been conducted to fully assess its drawbacks.