Chlorella is a single celled freshwater alga sold as powder or tablets. It is interesting for its protein and other components, but evidence of health effects is preliminary. It does not treat disease and is not a detox.
Before you buy
- Read the label: species, origin, amount per serving and warnings.
- Look for information on testing for heavy metals or contaminants.
- Compare forms: powder is flexible, tablets are easy to take.
- Write down why you want it, because a plate full of vegetables, legumes and whole grains stays the foundation.
If you decide to try it
Start with less than the label suggests and watch your digestion for a few days. Powder can be stirred into a smoothie or yoghurt. If you notice discomfort, a rash or unusual symptoms, stop and contact a doctor.
Who needs extra care
Talk to a doctor first if you are pregnant or breastfeeding, have liver or thyroid disease, an autoimmune condition or allergies, or take blood thinners or immunosuppressants. Dietary supplements can interact with medicines. Do not give them to children without a paediatrician’s advice.
Before the first purchase make a short list: write down your medicines, conditions and allergies. With it you can easily ask a doctor or pharmacist whether the supplement is suitable at all. Introduce one supplement at a time, so you know what to credit or blame for any change.
Keep an opened pack tightly closed in a dry, dark place and respect the expiry date. If the powder changes smell or colour, do not use it.
Sources: NCCIH PubMed Central (NIH).
Common questions
Does chlorella cleanse the body of heavy metals?
Evidence is not sufficient for that claim. The body clears substances through the liver and kidneys, and a supplement does not replace medical care.
Is chlorella safe in pregnancy?
Data are limited, so check with your doctor or midwife before using it.
Before first use
Choose products for your dietary routine and care needs. Follow a healthcare professional’s advice for diagnosis and treatment of symptoms. Check suitability first during pregnancy and for use by children.
