Spirulina is a nutrient-dense, blue-green algae that has been used for centuries due to its impressive health benefits. As a type of cyanobacteria, spirulina is packed with essential nutrients, including protein, vitamins and minerals. It's commonly consumed as a supplement in the form of powders, tablets or capsules.

Spirulina supplements offer various health benefits, including reducing inflammation, promoting heart health by lowering blood pressure and improving cholesterol levels. Spirulina may also help protect against cancer and ease hay fever symptoms like nasal congestion. In addition, spirulina supplements boost immune function by increasing the production of antibodies and other immune cells.

Spirulina supplements work by increasing beneficial bacteria such as Bifidobacteria, Lactobacillus and Prevotella, while decreasing harmful bacteria like Bacteroides and Fusobacterium. This helps to improve digestion and overall gut function. Spirulina also encourages the production of short-chain fatty acids, which are important for gut health, and may help decrease gut permeability. Additionally, spirulina polysaccharides have been shown to regulate gut microbiota and metabolites, potentially improving conditions like constipation and hyperlipidemia.

Taking spirulina supplements may boost your energy levels due to its nutrient-rich content, including protein, vitamins and minerals. You can take spirulina supplements any time of day, but many people prefer taking it in the morning or before a workout to benefit from the energy boost.