In brief: Chlorella and Spirulina are often sold together but are biologically different. Serving size, nutrient content and product purity matter most.
Direct comparison
| Feature | Chlorella | Spirulina |
|---|---|---|
| Biology | Green alga | Cyanobacterium |
| Protein | High per 100 g | High per 100 g |
| Vitamin B12 | Not reliable | Not reliable |
| Quality risks | Heavy metals, microbes | Also possible cyanotoxins |
Be cautious with detox claims
General clinical “detoxification” by algae products is not established. At the same time, products themselves can be contaminated.
FAQ
Which is better?
Neither is universally superior.
Is Spirulina a reliable B12 source?
No.
Do algae remove heavy metals?
Not reliably in clinical use.
What matters when buying?
Batch testing, origin and the real daily serving.
Conclusion
Chlorella and Spirulina are optional algae products. B12 limitations and quality control matter more than superfood marketing.
