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Dietary supplement

Chlorella Manna Ingredients & Drug Interactions

by HealthForce SuperFoods

Chlorella Manna label
See full label image
Tablet Or Pill Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Chlorella Manna against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Chlorella Manna is a dietary supplement by HealthForce SuperFoods with 1 active ingredient. Its ingredients are commonly taken for general nutrition and 'detox' support, immune support, liver and kidney support.Based on those ingredients, 337 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are 100% pure broken cell wall Chlorella tablets. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Chlorella Manna by HealthForce SuperFoods

Ask about any prescription or over-the-counter medication and we check it for interactions with Chlorella Manna by HealthForce SuperFoods — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Chlorella Manna by HealthForce SuperFoods

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 12, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 1 active ingredient.

Chlorella Manna contains one active ingredient: 100% pure broken cell wall chlorella tablets. Chlorella is a single-celled freshwater algae that's been used as a nutritional supplement.

There are no other active ingredients in this product, and no inactive ingredients are listed.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Chlorella's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: cellular recovery and overall nutritional support.
  • We looked for evidence on: Fatigue, Exercise-induced respiratory infections, Nonalcoholic fatty liver disease (NAFLD), Hyperlipidemia, general wellness, immune function — and 2 related terms.
  • The closest evidence on file: Chlorella is rated "Insufficient Reliable Evidence To Rate" for Nonalcoholic fatty liver disease (NAFLD) (Natural Medicines).
  • Also on file: Chlorella is rated "Insufficient Reliable Evidence To Rate" for Exercise-induced respiratory infections, Fatigue, Hyperlipidemia.

The evidence for chlorella is mixed and depends on what you're taking it for. It's rated possibly effective for pregnancy-related iron deficiency.

For brain tumors, nonalcoholic fatty liver disease (NAFLD), depression, and fatigue, the data we hold shows insufficient reliable evidence — meaning studies haven't established whether it works for these uses yet.

The evidence, ingredient by ingredient Chlorella

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Chlorella is generally well tolerated in the short term, though product quality and purity vary quite a bit from brand to brand. The most common side effects are allergic reactions, abdominal cramping, constipation, diarrhea, fatigue, gas, nausea, photosensitivity (sun sensitivity), and green stool discoloration — especially in the first two weeks.

Serious allergic reactions including anaphylaxis have been reported rarely. We don't have enough long-term safety data, so the manufacturer advises against using it unless your doctor directs you to.

Side effects, ingredient by ingredient Chlorella

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Chlorella.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 337 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check your medications against warfarin (Coumadin) — chlorella's vitamin K content can make it less effective. Also flag any photosensitizing drugs (medications that make you sun-sensitive) with your pharmacist, since chlorella may add to that effect.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Chlorella Manna is an option if you're interested in algae supplements and your doctor approves it — especially for pregnancy-related iron deficiency. If you take warfarin or any photosensitizing medications, check with your pharmacist first.

Start low and watch for digestive upset and sun sensitivity in your first couple of weeks.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jul 25, 2014.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Chlorella Manna, straight from the product label.

Brand HealthForce SuperFoods
Net contents 50 VeganTab(s)(TM)
Market status On market
Date entered into DSLD Jul 25, 2014
DSLD ID 35242
Product type Non-nutrient/non-botanical
Supplement form Tablet Or Pill
Dietary claims / uses Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Chlorella Manna by HealthForce SuperFoods, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
15 Tablet(s)
Maximum serving Sizes:
25 Tablet(s)
IngredientAmount% DV
100% pure broken cell wall Chlorella tablets0 NP--

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
General Statements

Incredible source of full spectrum, non-toxic absorbable nutrients.

Chlorella is the only plant on the planet that can quadruple its growth in less than one day.

These micronutrients work together to help regenerate cells faster than normal - to help your body recover from whatever's ailing you... letting you focus on everything else that's important. Let us focus on your health. -HealthForce

Formula

It contains Chlorella Growth Factor (CGF), which is a potent phytonutrient comprised of amino acids, beta glucans, nucleic acids, peptides and polysaccharides.

Brand IP Statement(s)

100% TruGanic(TM)

Suggested/Recommended/Usage/Directions

Suggested usage: 15-25 (or more) tablets per day, either all at once or divided. Chlorella is a food and can be taken in any quantity desired. It can be taken directly, mixed with water/juice, sprinkled on salads or mixed with food.

FDA Disclaimer Statement

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, or cure any disease.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Chlorella Manna by HealthForce SuperFoods label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Chlorella Manna label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Chlorella Manna by HealthForce SuperFoods

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size15 Tablet(s) Dosage formTablet Or Pill Amounts shown are per serving.

100% pure broken cell wall Chlorella tablets

Interacts with
337 drugs
0 NP per serving

Chlorella is a nutrient-rich freshwater green algae taken as a supplement for general wellness, immune support, and 'detox.' Some small studies sugges...

100% pure broken cell wall Chlorella tablets monograph & interactions
Interaction report

Chlorella Manna by HealthForce SuperFoods Drug Interactions

Want to check YOUR meds against Chlorella Manna?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
337Drugs
337 Moderate

Ingredients driving the most interactions

100% pure broken cell wall Chlorella tablets 337

Individual Drug Interactions

The ingredients in Chlorella Manna interact with 337 drugs. Click any drug to see the details.

1 of the 1 ingredient in Chlorella Manna interact with drugs. Each result below shows which ingredient is responsible. 100% pure broken cell wall Chlorella tablets

Each ingredient & the kinds of drugs it affects

For each ingredient in Chlorella Manna with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

100% pure broken cell wall Chlorella tablets2 drug types · 337 drugs

Photosensitizing Drugs

Theoretically, chlorella might have additive effects with photosensitizing drugs.
Chlorella has been reported to cause photosensitization. In five case reports, patients who had ingested chlorella exhibited swelling followed by erythematopurpuric lesions on sun-exposed areas of the body. Theoretically, concomitant use with photosensitizing drugs may exacerbate effects.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, chlorella might reduce the clinical effects of warfarin.
Chlorella contains significant amounts of vitamin K. There is at least one case report of warfarin therapy becoming sub-therapeutic after initiation of chlorella supplements.

Likelihood Possible Evidence D
100% pure broken cell wall Chlorella tablets full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Chlorella Manna, from the product label.

HealthForce SuperFoods

See all HealthForce SuperFoods products
Phone Number
800-357-2717
Web Address
HealthForce.com
Pharmacist Counseling Corner

Chlorella Manna by HealthForce SuperFoods: Common Questions

Does Chlorella Manna by HealthForce SuperFoods interact with any medications?
Yes. Based on its ingredients, Chlorella Manna has a known interaction with 337 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Chlorella Manna contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Will chlorella help with my energy?
Fatigue is on the list of uses chlorella is marketed for, but the evidence we hold shows insufficient reliable evidence to say whether it actually works for that. Talk with your doctor about whether it's worth a try for you.
What are the most common side effects?
Digestive upset is the main one — nausea, diarrhea, abdominal cramping, and gas, especially in your first two weeks. You might also notice green stool discoloration. Allergic reactions and sun sensitivity have been reported as well.
Is it safe to take during pregnancy?
Chlorella is rated possibly safe in pregnancy, though we don't have a lot of safety data. It's actually rated possibly effective for pregnancy-related iron deficiency. Talk with your doctor or midwife before starting it.
Can I take this while breastfeeding?
We don't have safety data on file for chlorella during lactation. Talk with your doctor or pharmacist about whether it's appropriate for you.
Why does product quality vary so much?
Chlorella is grown in tanks and can pick up contaminants, and manufacturing standards differ between brands. The manufacturer notes that purity and quality vary widely, so choose a reputable brand and store it properly.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Chlorella Manna is safe with your meds?

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Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Chlorella Manna label
Go deeper

The Full Monographs Behind Chlorella Manna’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Chlorella

Interacts with 337 drugs

Chlorella is a nutrient-rich freshwater green algae taken as a supplement for general wellness, immune support, and 'detox.' Some small studies suggest possible benefits for cholesterol, blo...

Read the full Chlorella monograph →
Sources

Sources & How We Checked

Chlorella Manna's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 13 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Chlorella 13 references
  1. Peirce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York, NY: William Morrow and Co., 1999.
  2. Ng TP, Tan WC, Lee YK. Occupational asthma in a pharmacist induced by chlorella, a unicellular algae preparation. Resp Med 1994;88:555-7. PubMed
  3. Jitsukawa K, Suizu R, Hidano A. Chlorella photosensitization. New phytophotodermatosis. Int J Dermatol 1984;23:263-8. PubMed
  4. Merchant RE, Carmack CA, Wise CM. Nutritional supplementation with Chlorella pyrenoidosa for patients with fibromyalgia syndrome: a pilot study. Phytother Res 2000;14:167-73.
  5. Merchant RE, Rice CD, Young HF. Dietary Chlorella pyrenoidosa for patients with malignant glioma: effects on immunocompetence, quality of life, and survival. Phytother Res 1990;4:220-31.
  6. Halperin SA, Smith B, Nolan C, et al. Safety and immunoenhancing effect of a Chlorella-derived dietary supplement in healthy adults undergoing influenza vaccination: randomized, double-blind, placebo-controlled trial. CMAJ 2003;169:111-7..
  7. Ohtake, T., Negishi, K., Okamoto, K., Oka, M., Maesato, K., Moriya, H., and Kobayashi, S. Manganese-induced Parkinsonism in a patient undergoing maintenance hemodialysis. Am J Kidney Dis 2005;46(4):749-753. PubMed
  8. Ng, T. P., Tan, W. C., and Lee, Y. K. Occupational asthma in a pharmacist induced by Chlorella, a unicellular algae preparation. Respir.Med. 1994;88(7):555-557. PubMed
  9. Ohkawa, S., Yoneda, Y., Ohsumi, Y., and Tabuchi, M. [Warfarin therapy and chlorella]. Rinsho Shinkeigaku 1995;35(7):806-807.
  10. Azocar J, Diaz A. Efficacy and safety of chlorella supplementation in adults with chronic hepatitis C virus infection. World J Gastroenterol 2013;19(7):1085-90. PubMed
  11. Panahi Y, Badeli R, Karami GR, Badeli Z, Sahebkar A. A randomized controlled trial of 6-week Chlorella vulgaris supplementation in patients with major depressive disorder. Complement Ther Med 2015;23(4):598-602. PubMed
  12. Nakano S, Takekoshi H, Nakano M. Chlorella pyrenoidosa supplementation reduces the risk of anemia, proteinuria and edema in pregnant women. Plant Foods Hum Nutr 2010;65(1):25-30. PubMed
  13. Yavasoglu I, Turgutkaya A, Bolaman Z. Chlorella-induced thrombocytopenia. Sao Paulo Med J 2018;136(6):602-3. PubMed

See these in context on the Chlorella monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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