Chlorella Manna Ingredients & Drug Interactions
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
Chlorella Manna is a dietary supplement by HealthForce SuperFoods with 3 active ingredients. Its ingredients are commonly taken for eye and vision health, skin health and acne, immune support.Based on those ingredients, 387 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Vitamin A. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
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.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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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.
What’s inside
Full disclosure
Chlorella Manna contains one active ingredient: vitamin A. The product also includes broken cell wall chlorella as an inactive ingredient — it's the food source base for the tablet.
Vitamin A is a fat-soluble vitamin your body uses for vision, immune function, and skin health. This product delivers it in the form of chlorella, a type of algae.
Does it work?
Couldn't assess
The evidence supports vitamin A for treating vitamin A deficiency — that's where it's clearly effective. For oral leukoplakia (white patches inside the mouth), aging skin, measles, ulcerative colitis, and bronchopulmonary dysplasia (a lung condition in newborns), the data we hold shows possibly effective, meaning there's some supporting research but it's not conclusive.
How safe is it?
Well-documented data
Vitamin A is generally well tolerated at recommended doses, but here's the key: it builds up in your body because it's fat-soluble, so too much over time can become toxic. High doses can cause liver damage, dry skin, hair loss, and in rare cases, serious problems like pseudotumor cerebri, liver failure, or coma.
For pregnancy and breastfeeding, the safety rating is mixed — normal dietary amounts and recommended supplement doses are appropriate, but high-dose vitamin A (especially as retinol) can cause birth defects and should be avoided in pregnancy. Talk with your doctor or pharmacist about what's right for you if you're pregnant, planning to become pregnant, or nursing.
Meds to double-check
Major interaction found
Before you start Chlorella Manna, check with your doctor or pharmacist if you take retinoids (Major interaction — this is the most serious), blood thinners like warfarin, tetracycline antibiotics, or medications that can stress your liver. High doses of vitamin A with any of these can cause problems.
The bottom line
Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Major medication interactions have been identified, and safety information is well characterized.
Chlorella Manna may be useful if you're treating a vitamin A deficiency or looking to support vision and immune health with a whole-food source. If you take retinoids (acne or skin medications), blood thinners, tetracycline antibiotics, or any drug that affects your liver, check your exact medications with your doctor or pharmacist before starting this product — the interaction potential is real.
Keep doses at recommended levels; don't take high-dose vitamin A supplements without guidance.
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 Nov 21, 2020.
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
General information
Key facts about Chlorella Manna, straight from the product label.
| Brand | HealthForce SuperFoods |
|---|---|
| Net contents | 1200 VeganTab(s)(TM) |
| Market status | On market |
| Date entered into DSLD | Nov 21, 2020 |
| DSLD ID | 239699 |
| Product type | Other Combinations |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years), Kosher, Organic, Gluten Free |
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
| Ingredient | Amount | % DV |
|---|---|---|
| Calories from Fat | 2 Calorie(s) | -- |
| Vitamin A | 500 IU | 10% |
| Protein | 1 Gram(s) | -- |
| Total Calories | 5 Calorie(s) | -- |
Other ingredients: broken cell wall Chlorella
Tap any ingredient to jump to its full detail below.
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.
Formula
Chlorella Manna is an incredible source of full-spectrum, non-toxic, absorbable nutrients and compounds. A single-celled, green, freshwater alga, chlorella is 50-60% protein and contains all nine essential amino acids. Chlorella is the only plant on the planet that can quadruple its growth in less than one day. Chlorella Growth Factor, or CGF, is produced during photosynthesis. CGF is a potent phytonutrient comprised of amino acids, beta-glucans, nucleic acids, peptides, and polysaccharides which supports health at a cellular level. Chlorella Manna also supports detoxification with an abundant chlorophyll content and its ability to bind and potentially chelate toxins.
Broken cell wall Chlorella Source of full-spectrum, non-toxic, absorbable nutrients and compounds, including 50-60% protein
OU Pareve (Kosher)
General Statements
The HealthForce SuperFoods Edge Integrity: Grassroots, independently-owned company based on principles of service and compassion.
EcoFresh Nutrient Lock Packaging maintains the highest possible levels of nutritional and ecological integrity. 100% Post-consumer recycled paper "Hype is Nothing. substance is Everything!" Dr. Jameth Sheridan - Naturopath and Hard-Core Herbal Medicine Researcher
1200 VeganTabs (by weight)
Exclusive EcoFresh Nutrient Lock This packaging ensures potency and nutrient protection!
Not a significant source of saturated fat, trans fat, cholesterol, dietary fiber, sugars, sodium, carbohydrates
I am deeply committed to researching and developing the highest quality, most effective, life-enhancing nutritional products based on my ongoing research into life force, whole foods, enzymes, Mother Nature, and true science - with a reverence for all life. I wish you great health and happiness always. Dr. Jameth Sheridan - Naturopath and Hard-Core Herbal Medicine Researcher
Please recycle this bottle. It matters.
Formulation
Products are manufactured in FDA-registered, NSF-compliant U.S. vegan facility.
TruGanic Purity: Free of pesticides, GMOs, and irradiation; verified by actual testing.
Additionally, all products are lab tested for botanical identity, heavy metals, microbiological activity, and gluten.
We do not allow any use of fillers, binders, isolates, or flow agents.
Manufactured in low-EMF, Tachyon-enhanced facility
GF Certified Gluten-Free
Certified organic by Oregon Tilth
Manufactured in vegan facility free of gluten, peanuts, and tree nuts
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not designed to diagnose, treat, cure, or prevent any disease.
Seals/Symbols
USDA Organic OTCO (Oregon Tilth Certified Organic) Certified Vegan vegan.org GF Certified Gluten-Free TruGanic OU Pareve (Kosher)
Suggested/Recommended/Usage/Directions
Suggested Use: Start with 2 VeganTabs and work up to 6 VeganTabs per day, or as advised by a qualified health care professional. Chlorella is a food. It can be taken directly, or mixed with foods, such as salads or trail mixes. Suggested Adjuncts: A whole food, organic, vegan diet with emphasis on fresh raw foods, other HealthForce SuperFoods products such a Vitamineral Green and Earth Shilajit Supreme, Liver Rescue, exercise and everything else healthful! You deserve it!
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Chlorella Manna by HealthForce SuperFoods label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Chlorella Manna by HealthForce SuperFoods
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Vegetarian Tablet(s) Dosage formTablet Or Pill Servings per container200 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Vitamin A
Interacts with387 drugs
Vitamin A is an essential nutrient important for vision, skin, immune function, and growth. Most people get enough from a balanced diet, and supplemen...
Vitamin A monograph & interactionsProtein
Total Calories
Other (inactive) ingredients: Broken cell wall Chlorella. These complete the product’s ingredient list but are not active constituents.
Chlorella Manna by HealthForce SuperFoods Drug Interactions
HelloPharmacist Interaction Report
Chlorella Manna contains vitamin A, which interacts with a number of medications.
The most serious concern is with retinoids (vitamin A derivatives like tretinoin and isotretinoin) — taking them together can cause dangerously high vitamin A levels in your body, with additive toxic effects. This is a Major-level interaction.
Read the full breakdown — every affected drug type, severity by severity
Vitamin A also has Moderate-level interactions with blood thinners like warfarin, where high doses may increase bleeding risk; hepatotoxic drugs (medications that stress the liver), where the combination might raise your liver disease risk; and tetracycline antibiotics, where high doses of vitamin A can increase the risk of a serious (but rare) condition called pseudotumor cerebri (increased pressure inside the skull).
We could not check the chlorella itself for interactions. Altogether, these interactions span 388 individual medications.
Use the medication checker on this page to see if any of your prescriptions or over-the-counter drugs fall into these categories before you start.
Check your own medications below · Editorial policy · How we use AI
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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Chlorella Manna interact with 387 drugs. Click any drug to see the details.
1 of the 3 ingredients in Chlorella Manna interact with drugs. Each result below shows which ingredient is responsible. Vitamin A
AcitretinSoriatane
How Acitretin interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Acitretin interactionAlitretinoinPanretin
How Alitretinoin interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Alitretinoin interactionBexaroteneTargretin
How Bexarotene interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Bexarotene interactionHalobetasol Propionate,tazaroteneDuobrii
How Halobetasol Propionate,tazarotene interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Halobetasol Propionate,tazarotene interactionIsotretinoinAbsorica, Accutane, Amnesteem, Claravis, Roaccutane, Sotret
How Isotretinoin interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Isotretinoin interactionTazaroteneArazlo, Avage, Fabior, Tazorotene, Zorac
How Tazarotene interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Tazarotene interactionTretinoinAltreno, Renova, Retin-A, Vesanoid
How Tretinoin interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Tretinoin interactionTretinoin, Benzoyl PeroxideTwyneo
How Tretinoin, Benzoyl Peroxide interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Tretinoin, Benzoyl Peroxide interactionEtretinateTegison
How Etretinate interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin ARetinoids Major
Interaction Summary
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Read the full Vitamin A + Etretinate interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + 6-mercaptopurine interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Abacavir, Lamivudine interactionAbiraterone
How Abiraterone interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Abiraterone Acetate interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acebutolol interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Chlorella Manna — through 1 ingredient. Tap an ingredient for the detail:
Vitamin AHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
Read the full Vitamin A + Acetaminophen, Caffeine, Isometheptene interactionEach 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.
Vitamin A
Retinoids
Concomitant use of retinoids with vitamin A supplements might produce supratherapeutic vitamin A levels.
Retinoids, which are vitamin A derivatives, could have additive toxic effects when taken with vitamin A supplements.
Hepatotoxic Drugs
Theoretically, taking high doses of vitamin A in combination with other potentially hepatotoxic drugs might increase the risk of liver disease.
The tolerable upper intake level (UL) is the highest level of intake that is likely to pose no risk of adverse effects. Doses of vitamin A above the UL can cause hepatotoxicity, ranging from elevated liver enzymes to liver failure.
Tetracycline Antibiotics
Theoretically, taking tetracycline antibiotics with high doses of vitamin A can increase the risk of pseudotumor cerebri.
Benign intracranial hypertension (pseudotumor cerebri) can occur with tetracyclines and with acute or chronic vitamin A toxicity. Case reports suggest that taking tetracyclines and vitamin A concurrently can increase the risk of this condition. Avoid high doses of vitamin A in people taking tetracyclines chronically.
Warfarin (Coumadin)
Theoretically, high doses of vitamin A could increase the risk of bleeding with warfarin.
Vitamin A toxicity is associated with hemorrhage and hypoprothrombinemia, possibly due to vitamin K antagonism. Advise patients taking warfarin to avoid doses of vitamin A above the tolerable upper intake level of 10,000 IU/day for adults.
Brand information
Manufacturer and brand details for Chlorella Manna, from the product label.
HealthForce SuperFoods
See all HealthForce SuperFoods products- Name
- HealthForce SuperFoods
- City
- Las Vegas
- State
- NV
- ZipCode
- 89126
- Phone Number
- (800) 748-6229
- Web Address
- HealthForceSuperFoods.com
Chlorella Manna by HealthForce SuperFoods: Common Questions
Does Chlorella Manna by HealthForce SuperFoods interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What does vitamin A do in this product?
Is this safe to take while pregnant or breastfeeding?
Can this product treat skin problems or aging?
What happens if I take too much?
Does this contain anything besides vitamin A?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Chlorella Manna is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
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.
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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 31 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.
Vitamin A 31 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Griffiths JK. The vitamin A paradox. J Pediatr 2000;137:604-7.. PubMed
- Hardman JG, Limbird LL, Molinoff PB, eds. Goodman and Gillman's The Pharmacological Basis of Therapeutics, 9th ed. New York, NY: McGraw-Hill, 1996.
- Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
- FDA Talk Paper. Vitamin A and birth defects (T95-56). Food and Drug Administration, U.S. Department of Health and Human Services, Rockville, MD. October 6, 1995.
- Russell RM. The vitamin A spectrum: from deficiency to toxicity. Am J Clin Nutr 2000;71:878-84. PubMed
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
- Feskanich D, Singh V, Willett WC, Colditz GA. Vitamin A intake and hip fractures among postmenopausal women. JAMA 2002;287:47-54. PubMed
- Melhus H, Michaelsson K, Kindmark A, et al. Excessive dietary intake of vitamin A is associated with reduced bone mineral density and increased risk for hip fracture. Ann Intern Med 1998;129:770-8. PubMed
- Michaelsson K, Lithell H, Vessby B, Melhus H. Serum retinol levels and the risk of fracture. N Engl J Med 2003;348:287-94.. PubMed
- Botterweck AA, van den Brandt PA, Goldbohm RA. Vitamins, carotenoids, dietary fiber, and the risk of gastric carcinoma: results from a prospective study after 6.3 years of follow-up. Cancer 2000;88:737-48.. DOI
- Meyskens FL Jr, Graham V, Chvapil M, et al. A phase I trial of beta-all-trans-retinoic acid delivered via a collagen sponge and a cervical cap for mild or moderate intraepithelial cervical neoplasia. J Natl Cancer Inst 1983;71:921-5..
- Hathcock JN, Hattan DG, Jenkins MY, et al. Evaluation of vitamin A toxicity. Am J Clin Nutr 1990;52:183-202.. PubMed
- Walters BN, Gubbay SS. Tetracycline and benign intracranial hypertension: report of five cases. Br Med J 1981;282:19-20.. PubMed
- Pearson MG, Littlewood SM, Bowden AN. Tetracycline and benign intracranial hypertension (letter). Br Med J 1981;282:568-9.. PubMed
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