• General recommendations
  • Recommendations

Chlorella Usage Recommendations and Contraindications

Chlorella is not a drug, and it is not included in the pharmacopoeia of Western medicine. However, there is an abundance of scientific articles and publications that describe chlorella’s effects. Pharmaceutical labs are even working to extract the active components of chlorella to enrich their own medicines.

80% of new consumers of chlorella notice its positive effects within a month, so there is no doubt that chlorella can be beneficial to your health.

Chlorella is a powerful heavy metals and PCBs magnet, it is therefore very important to select a high quality chlorella that has not been in contact with pollutants, such as a organic chlorella, grown in glass tubes.


Dosages and usage recommendations : how to take chlorella ?

Chlorella can benefit nearly anyone, but there is no universal recipe for its use. We are all complex beings with many commonalities, but we are also individuals with our own unique characteristics and backgrounds. Factors such as absorption rates, disposal capabilities, physiological reactions, and levels of pollutants in the body are all specific to each individual.

These usage recommendations serve only to guide your first doses of chlorella. They provide information about average doses and treatments and should therefore be read for informational purposes only. It is important to make adjustments and find the dose that is right for you, according to your own unique needs. Moreover, do not forget that our needs can change over time, depending on the season, stress levels, fatigue, or other varying factors.

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Some people choose to take chlorella for 3-4 months twice a year while others prefer to take their supplements year-round. Similarly, some people take 10 chlorella tablets (300mg) a day while others take 30 tablets. It is up to each individual to adjust the dosage to his or her own needs.

Please note that no case of an overdose of chlorella has ever been reported.

To find the right dosage for you, pay close attention to your body’s reactions and how you feel overall.

Important things and false rumors to know about chlorella ➤ The 7 Lies about Chlorella


Recommended dosage for adults

Chlorella Glass Tubes
Ultra pure organic chlorella eChlorial cultivated in glass tubes

Consumer experiences have shown that a daily dose of 2-5 grams of chlorella (or 10-15 300 mg chlorella tablets) has significant positive effects on quality of life. Doctors and nutritionists also suggest taking 3-5 grams or 10-15 tablets every day to prevent health complications and illnesses.

Recommended dosage for children

Powdered chlorella (or crushed chlorella tablets) can be given to children. Doses should be adjusted to the weight of the child in proportion to the recommendations for adults. For example, a child weighing 20 kg should take around 1 gram of chlorella or 3 crushed chlorella tablets.

When to take chlorella ?

Take chlorella at least one hour before or after taking any other medications (such as birth control pills). Ideally, take chlorella in the morning and other pills at night.

If it is more convenient, chlorella can be taken in two or three doses throughout the day rather than all at once.

Take chlorella before meals and with a large glass of water.

Because chlorella is rich in bioabsorpable iron, do not drink tea with chlorella. Tea can inhibit the absorption of iron.

In addition to taking chlorella tablets, using chlorella powder in cooking is very important, particularly when eating fish, which invariably contains a variety of toxins. Add 1-3 teaspoons of chlorella powder at a low temperature (60 degrees Celsius or below) or at the end of cooking in order to preserve its vitamins.

Recommendations for first use

It is best to begin by taking 1-2 chlorella tablets per day. Progressively increase the dose until reaching the desired dosage.

The average recommended dose of 10-15 tablets per day (2-5g) can be reached in 10 days.

Do I need to take chlorella year-round?

Chlorella can be taken every day, year-round. Alternatively, it can be taken in treatments of 3-4 months. These treatments should occur twice a year, once in spring and once in autumn.

Contraindications to chlorella

Those affected by hemochromatosis (an excess of iron) should not take chlorella because the supplement contains bioabsorbable iron.

If you are taking anticoagulants, consult your doctor before taking chlorella. Because chlorella contains vitamin K, which plays a role in coagulation, the supplement may affect anticoagulation treatment.

Side effects of chlorella

Possible intestinal disruption during the first days of use

Chlorella can stimulate intestinal activity immediately. Therefore, slight disturbances in intestinal behavior, including bloating, can occur during the first days of taking chlorella. These effects do not last.

The majority of new consumers notice an increase in intestinal activity without experiencing any significant discomfort. But if intestinal activity increases too much or too quickly, decrease the daily dose of chlorella or, if necessary, stop taking chlorella for several days.

Although few people experience a slowing down of intestinal activity, if this is the case, quickly increase dosage (30-60 tablets or more) and drink more liquids, preferably water. Normal functioning will return in approximately 10 days.

Side effets : Headaches, Vomiting, Joint pain, Dizziness…

Although they are rare, other side effects can occur after the first dose of chlorella. These may be due to the beginning of the detoxification process, which stirs up heavy metals that have accumulated in the body.

Side effects affect around 10% of people taking chlorella and vary in nature and intensity, depending on the level and type of pollutants in the body.

Some of the most common side effects include: headaches, sinus infections, joint pain, numbness, depressed mood, dizziness, and shaking.

To remedy negative side effects, increase dosage in order to accelerate the rate at which chlorella eliminates toxins and leaves the body. Take up to 15-30 tablets four times a day until side effects subside (8-10 days). Slowly reduce dosage amount and frequency until reaching a normal daily dose.

In some cases, consumers that are sensitive to caffeine have also experienced restlessness when taking chlorella with coffee. To avoid this side effect, it is best not to take chlorella with caffeine or at night.

If you’re looking for a natural & efficient heavy metal detoxification program, please see Dr Klinghardt detox program.

Organic Chlorella, grown in glass tubes in Europe

Box 650 tablets - Organic Chlorella

Box 650 tablets – Organic Chlorella

Premium European Chlorella grown in glass tubes

72.95 €

72.95 €

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* An article by Michel Dogna of Journal Soignez vous, N°26, « Mort lente par les métaux lourds » [Editor: Sté Santé Port Royal]

** (Source: Agence Française de sécurité sanitaire des aliments – Saisine 2002- 004 AFSSA)

Chlorella for pregnant women***

A recent study showed that women who consumed Chlorella daily during their pregnancy had fewer dioxins and more immunoglobin in their breast milk. Chlorella could thus help women produce breast milk that is more pure and that benefits the immune system and health of their children.

*** (Source: Nakano S, Takekoshi H, Nakano M. “Chlorella pyrenoidosa supplementation decreases dioxin and increases immunoglobulin concentrations in breast milk.” J Med Food. 2007 Mar;10(1): 134-42.)