Phycocyanin
Also known as: Phycocyanin, C-Phycocyanin
Overview
Phycocyanin is a blue pigment protein derived from cyanobacteria, most notably *Arthrospira platensis* (Spirulina). It is a nutraceutical ingredient valued for its antioxidant, anti-inflammatory, and potential therapeutic properties. Phycocyanin is available in various forms, including capsules, powders, and liquids, and is primarily sourced from algae. Research suggests that phycocyanin may offer benefits such as reducing oxidative stress, improving lipid profiles, and potentially managing diabetes. While in vitro and animal studies show promising results, more high-quality human clinical trials are needed to fully understand its effects. It is generally considered safe, but individuals with allergies to Spirulina or cyanobacteria should exercise caution. Ongoing research continues to explore its potential health applications.
Benefits
Phycocyanin exhibits several evidence-based benefits, primarily related to its antioxidant and anti-inflammatory properties. Animal studies demonstrate that phycocyanin increases antioxidant capacity and reduces oxidative stress. Selenium-enriched phycocyanin has shown significant anti-atherosclerotic effects, reducing aortic fatty streak area and improving lipid profiles in hamsters. Additionally, phycocyanin may have antidiabetic potential by improving insulin sensitivity and reducing glucose levels, although human evidence is limited. In vitro studies suggest anti-cancer properties, with phycocyanin inducing apoptosis in cancer cells, but human trials are needed to confirm these findings. These benefits are particularly relevant for individuals with metabolic syndrome or at risk of atherosclerosis. The time course for benefits in humans is not well established due to limited clinical data.
How it works
Phycocyanin primarily functions through antioxidant pathways, reducing oxidative stress and inflammation. It interacts with cardiovascular and metabolic systems by improving lipid profiles and reducing oxidative damage. At the molecular level, phycocyanin may target enzymes involved in oxidative stress, such as NAD(P)H oxidase. While the exact mechanisms are still being investigated, it is believed that phycocyanin's antioxidant properties contribute to its potential health benefits. The bioavailability of phycocyanin in humans is not well studied, but it is thought to be absorbed in the gastrointestinal tract, where it can exert its effects on various body systems.
Side effects
Phycocyanin is generally considered safe when consumed as part of Spirulina or in purified forms. However, long-term safety data are limited. Common side effects may include gastrointestinal upset in some individuals. Allergic reactions are rare but possible, particularly in those with known allergies to Spirulina or cyanobacteria. Due to its potential effects on blood sugar and clotting, phycocyanin may interact with anticoagulants or diabetes medications. Individuals with severe allergies to Spirulina or cyanobacteria should avoid it. Pregnant or breastfeeding women should consult healthcare providers before use. It is important to monitor for any adverse effects and discontinue use if they occur.
Dosage
The recommended dosage of phycocyanin typically ranges from 100 mg to several grams per day, depending on the specific application and individual needs. There is no well-established minimum effective dose for specific health benefits, and the maximum safe dose is not clearly defined, although high doses are generally well-tolerated. Phycocyanin can be taken at any time, but taking it with meals may help reduce gastrointestinal upset. It is available in capsule, powder, or liquid forms. Selenium enrichment may enhance its bioavailability. It is advisable to start with a lower dose and gradually increase it while monitoring for any adverse effects.
FAQs
Is phycocyanin safe to take with other medications?
Phycocyanin may interact with anticoagulants or diabetes medications. Consult with a healthcare provider before combining it with other drugs to avoid potential adverse effects.
What are the expected benefits of taking phycocyanin?
Phycocyanin may offer antioxidant and potential metabolic benefits. Individual results may vary, and it is not a cure for diseases but may support overall health and wellness.
When is the best time to take phycocyanin?
Phycocyanin can be taken at any time, but taking it with meals may reduce the risk of gastrointestinal side effects. Consistency in timing can help maintain stable levels in the body.
Are there any specific groups of people who should avoid phycocyanin?
Individuals with severe allergies to Spirulina or cyanobacteria should avoid phycocyanin. Pregnant or breastfeeding women should consult healthcare providers before use.
Research Sources
- https://pmc.ncbi.nlm.nih.gov/articles/PMC10144176/ – This article discusses the extraction, purification, and applications of phycocyanin. It highlights the potential of phycocyanin in various fields, including food, cosmetics, and pharmaceuticals, due to its antioxidant and anti-inflammatory properties. The review emphasizes the need for further research to fully explore its therapeutic potential.
- https://pubmed.ncbi.nlm.nih.gov/37544212/ – This study investigates the effects of phycocyanin on metabolic parameters. The findings suggest that phycocyanin has the potential to improve metabolic health by modulating various pathways related to glucose and lipid metabolism. Further research is needed to confirm these effects in human clinical trials.
- https://www.mdpi.com/2072-6643/16/11/1752 – This review explores the potential health benefits of phycocyanin, focusing on its antioxidant, anti-inflammatory, and anti-cancer properties. It highlights the mechanisms through which phycocyanin exerts its effects and discusses its potential applications in preventing and treating various diseases. The review also emphasizes the need for more human clinical trials to validate these findings.
- https://pdfs.semanticscholar.org/84f4/ece8cc77b78c53af81964fa6b58af266350a.pdf – This study investigates the anti-proliferative effects of phycocyanin on cancer cells. The results indicate that phycocyanin can induce apoptosis and inhibit the growth of cancer cells in vitro. While these findings are promising, further research is needed to determine its efficacy in human cancer treatment.
- https://pubs.acs.org/doi/abs/10.1021/jf070529g – This animal study examines the effects of selenium-enriched phycocyanin on atherosclerosis in hamsters. The results show that selenium-enriched phycocyanin significantly reduces aortic fatty streak area and improves lipid profiles, suggesting its potential as an anti-atherosclerotic agent. The study highlights the synergistic effects of selenium and phycocyanin in improving cardiovascular health.
Supplements Containing Phycocyanin

Green Blends Cleansing Powder
Earthrise

Green Blends Cleansing Powder
Earthrise

Green Blends Cleansing Powder
Earthrise

Spirulina Powder
Earthrise

Spirulina Organic Tablets
Earthrise

Spirulina Organic Tablets
Earthrise

Spirulina
Gaia Organics DailyWellness

Spirulina Natural Tablets
Earthrise

Spirulina Natural Capsules
Earthrise