Phycocyanin is a pigment found in blue-green algae, including spirulina. Some research has suggested that phycocyanin may have potential anti-cancer properties.

One study published in the Journal of Medicinal Food found that phycocyanin was able to inhibit the growth of breast cancer cells in mice. Another study published in the Journal of Experimental Therapeutics and Oncology found that phycocyanin was able to inhibit the growth of colon cancer cells in mice.

It’s important to note that while these results are promising, more research is needed to fully understand the potential of phycocyanin as a treatment for cancer. Additionally, it is important to keep in mind that supplements are not regulated by the FDA and may not be of the same quality or purity as those used in research studies. It is always a good idea to speak with a healthcare provider before starting any new supplement regimen, especially if you have cancer or are at risk for cancer.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5687155/