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Dietary supplement

Chlorella Tablets Ingredients & Drug Interactions

by Stakich

Chlorella Tablets label
See full label image
Tablet Or Pill Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Chlorella Tablets 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 Tablets is a dietary supplement by Stakich 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 Chlorella. 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 Tablets by Stakich

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

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Chlorella Tablets by Stakich

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

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Stakich Chlorella Tablets contain one active ingredient: chlorella, a single-celled freshwater alga. The tablets also include microcrystalline cellulose as an inactive ingredient to hold the tablet together.

That's it—no fillers or binders beyond that.

Does it work?

Moderate evidence
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

This product doesn't appear to be marketed for a specific use, so we graded Chlorella's overall clinical evidence instead.

Moderate

Some clinical evidence supports Chlorella for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Pregnancy-related iron deficiency — rated "Possibly Effective" (Natural Medicines).

The evidence we hold shows chlorella is possibly effective for pregnancy-related iron deficiency. For other uses—brain tumors, fatty liver disease, depression, and fatigue—the research isn't strong enough yet for us to rate it.

If you're considering chlorella for a specific reason, your pharmacist or doctor can tell you whether the current evidence supports its use for your situation.

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 widely between manufacturers. The most common side effects are allergic reactions, stomach cramping, constipation, diarrhea, fatigue, gas, nausea, and sun sensitivity—especially in the first two weeks.

A small number of trial participants reported nausea or diarrhea, and in one trial a few patients had worsening constipation or mild diarrhea that was temporary. Serious allergic reactions, including anaphylaxis, are rare but have been reported both in people taking it and those preparing the tablets.

For pregnancy and breastfeeding, the safety data rates chlorella as possibly safe during pregnancy, but there isn't enough information on file for lactation. Talk with your doctor or pharmacist before using it if you're pregnant or nursing.

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.

Before you take Stakich Chlorella, double-check with your pharmacist if you're on warfarin (a blood thinner)—chlorella can reduce how well it works. Also flag any photosensitizing medications you take, which might have additive effects with chlorella.

Use the medication checker below to confirm your exact drugs.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

Chlorella may be worth considering if you're pregnant and have iron deficiency, though the evidence is still developing for most other uses. If you take warfarin or a photosensitizing medication, you'll need to check with your pharmacist first.

Product quality varies, so buy from a reputable maker, and watch for stomach upset or sun sensitivity when you start.

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 Feb 24, 2017.

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 Tablets, straight from the product label.

Brand Stakich
Barcode (UPC) 099977024324
Net contents 500 Tab(s)
Market status On market
Date entered into DSLD Feb 24, 2017
DSLD ID 70369
Product type Other Combinations
Supplement form Tablet Or Pill
Dietary claims / uses All Other, 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 Tablets by Stakich, 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:
5 Tablet(s)
Maximum serving Sizes:
5 Tablet(s)
Servings per container
100
UPC/BARCODE
099977024324
IngredientAmount% DV
Chlorella500 mg--

Other ingredients: pure Chlorella powder, Microcrystalline Cellulose

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

Stakich Chlorella is premium quality and high potency!

Since 1925, we have committed ourselves to providing only the finest and freshest products that support a healthy and natural lifestyle. We know your family will enjoy this healthy, all natural food as much as our family does!

Since 1925

All natural Premium quality

Formula

Stakich Chlorella tablets consist of 100% pure Chlorella powder, cold-pressed into a tablet.

500 mg

Suggested/Recommended/Usage/Directions

Suggested Use: Take 5 tablets daily, preferably with meals or as directed by a health care professional.

Storage

Storage Store in a cool, dry place, away from direct sunlight. Refrigeration is optional.

Precautions

Warning If you are pregnant or breastfeeding, consult your health-care professional before using this product.

FDA Statement of Identity

Dietary Supplement

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

See for yourself

Chlorella Tablets by Stakich label

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

Chlorella Tablets 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 Tablets by Stakich

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

Serving size5 Tablet(s) Dosage formTablet Or Pill Servings per container100 Amounts shown are per serving.

Chlorella

Interacts with
337 drugs
500 mg 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...

Chlorella monograph & interactions

Other (inactive) ingredients: Pure Chlorella powder, Microcrystalline Cellulose. These complete the product’s ingredient list but are not active constituents.

Interaction report

Chlorella Tablets by Stakich Drug Interactions

Want to check YOUR meds against Chlorella Tablets?

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

Chlorella 337

Individual Drug Interactions

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

1 of the 1 ingredient in Chlorella Tablets interact with drugs. Each result below shows which ingredient is responsible. Chlorella

Each ingredient & the kinds of drugs it affects

For each ingredient in Chlorella Tablets 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.

Chlorella2 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
Chlorella full monograph & interactions
The maker

Brand information

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

Stakich

See all Stakich products
Name
Stakich, Inc.
City
Troy
State
Michigan
ZipCode
48084
Web Address
www.stakich.com
Pharmacist Counseling Corner

Chlorella Tablets by Stakich: Common Questions

Does Chlorella Tablets by Stakich interact with any medications?
Yes. Based on its ingredients, Chlorella Tablets 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 Tablets 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 fatigue?
The research on chlorella for fatigue isn't established enough yet for us to say whether it works. If fatigue is a concern, your doctor can help figure out what's causing it and whether chlorella might be part of the answer.
Can I take this if I'm pregnant?
Chlorella rates as possibly safe in pregnancy, but there's not a lot of safety data. Talk with your doctor or midwife before you start—they know your full health picture and can give you personalized advice.
What are the most common side effects?
Most side effects are mild: stomach cramping, gas, nausea, diarrhea, or constipation, especially in the first couple of weeks. Some people also report sun sensitivity. Allergic reactions are possible but rare.
Does this product have fillers?
The tablet includes microcrystalline cellulose to hold it together, which is a standard binder. That's the only inactive ingredient listed.
Is chlorella tested for purity?
The facts note that product quality and purity vary widely between manufacturers. When you choose a brand, look for ones with third-party testing if purity is important to you.

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

Not sure if Chlorella Tablets is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

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 Tablets label
Go deeper

The Full Monographs Behind Chlorella Tablets’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 Tablets'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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