20 Best Essiac Herbal Extract [2024]

Are you looking for the best essiac herbal extract? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling essiac herbal extract.

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1 ESSIAC Original Herbal Liquid Extract – 10.14 fl oz Bottle | Powerful Antioxidant Blend to Help... ESSIAC Original Herbal Liquid Extract – 10.14 fl oz Bottle | Powerful Antioxidant Blend to Help...
2 ESSIAC All-Natural Herbal Extract Capsules – 60 capsules | Powerful Antioxidant Blend to Help... ESSIAC All-Natural Herbal Extract Capsules – 60 capsules | Powerful Antioxidant Blend to Help...
3 ESSIAC Gold All-Natural Herbal Extract with Mushroom Derived AHCC for Enhanced Immune Support – 60... ESSIAC Gold All-Natural Herbal Extract with Mushroom Derived AHCC for Enhanced Immune Support –...
4 Essiac liquid Extract 10.5 fl oz (3 Pack) Essiac liquid Extract 10.5 fl oz (3 Pack)
5 Essiac Vegetable Caps 60 Caps x 3 (180) Essiac Vegetable Caps 60 Caps x 3 (180)
6 ESSIAC ORIGINAL Herbal Tea Powder – 1.5 oz Bottle | Powerful Antioxidant Blend to Help Promote... ESSIAC ORIGINAL Herbal Tea Powder – 1.5 oz Bottle | Powerful Antioxidant Blend to Help Promote...
7 NOW Supplements, Ojibwa Herbal Extract 450 mg, Concentrated Blend of High Quality, Alcohol-fFree,... NOW Supplements, Ojibwa Herbal Extract 450 mg, Concentrated Blend of High Quality, Alcohol-fFree,...
8 The Native American Herbalist’s Bible • 3-in-1 Companion to Herbal Medicine: Theory and... The Native American Herbalist’s Bible • 3-in-1 Companion to Herbal Medicine: Theory and...
9 16-Ounce Amber Glass Bottles with Reusable Chalk Labels and Lids (2 Pack), Refillable Brown Boston... 16-Ounce Amber Glass Bottles with Reusable Chalk Labels and Lids (2 Pack), Refillable Brown...
10 ESSIAC Tea All-Natural Organic and Wild-Crafted Daily Drops for Enhanced Lymphatic Drainage and... ESSIAC Tea All-Natural Organic and Wild-Crafted Daily Drops for Enhanced Lymphatic Drainage and...
11 Essiac Tea, 32 Ounce Extract | Immune System, Liver and Lymphatic Support | Based on Original Recipe... Essiac Tea, 32 Ounce Extract | Immune System, Liver and Lymphatic Support | Based on Original...
12 Raw Earth Essiac Tea Concentrated Live Extract | Vegan, Non-GMO, Gluten-Free | Immune System... Raw Earth Essiac Tea Concentrated Live Extract | Vegan, Non-GMO, Gluten-Free | Immune System...
13 Essiac Tea Softgels, 711 mg, 3 Pack 360 Soft Gels, Eight Herb Essiac Tea, All Natural, Organic... Essiac Tea Softgels, 711 mg, 3 Pack 360 Soft Gels, Eight Herb Essiac Tea, All Natural, Organic...
14 Essiac International Tru-Pine Liquid Pine Bark Extract, 10.14 Fluid Ounce Essiac International Tru-Pine Liquid Pine Bark Extract, 10.14 Fluid Ounce
15 Essiac Tea Softgels, 711 mg, 3 Pack 360 Soft Gels, Eight Herb Essiac Tea, All Natural, Organic... Essiac Tea Softgels, 711 mg, 3 Pack 360 Soft Gels, Eight Herb Essiac Tea, All Natural, Organic...
16 The Burzynski Breakthrough: The Most Promising Cancer Treatment and the Government's Campaign to... The Burzynski Breakthrough: The Most Promising Cancer Treatment and the Government's Campaign to...
17 HumanN SuperBeets Heart Chews - Nitric Oxide Production for Daily Blood Pressure Support &... HumanN SuperBeets Heart Chews - Nitric Oxide Production for Daily Blood Pressure Support &...
18 Zazzee Ojibwa Tea, 180 Vegan Capsules, 500 mg, Rene Caisse's Original Formula‎, Burdock, Sheep... Zazzee Ojibwa Tea, 180 Vegan Capsules, 500 mg, Rene Caisse's Original Formula‎, Burdock, Sheep...
19 Organa All Natural Essiac Tea - Pure Essiac Liquid Herbal Supplement - Organic and WildCrafted Herbs Organa All Natural Essiac Tea - Pure Essiac Liquid Herbal Supplement - Organic and WildCrafted Herbs
20 Essiac Tonic - 120 Softgels Essiac Tonic - 120 Softgels
SaleBestseller No. 1
ESSIAC Original Herbal Liquid Extract – 10.14 fl oz Bottle | Powerful Antioxidant Blend to Help...
  • 𝐇𝐄𝐑𝐁𝐀𝐋 𝐑𝐄𝐌𝐄𝐃𝐘 – The natural herbal remedy, Essiac, helps normalize the body by aiding in the promotion of...
  • 𝐏𝐎𝐖𝐄𝐑𝐅𝐔𝐋 𝐀𝐍𝐓𝐈𝐎𝐗𝐈𝐃𝐀𝐍𝐓𝐒 – Essiac is formulated to contain an abundance of powerful...
  • 𝐂𝐎𝐍𝐂𝐄𝐍𝐓𝐑𝐀𝐓𝐄𝐃 𝐋𝐈𝐐𝐔𝐈𝐃 𝐄𝐗𝐓𝐑𝐀𝐂𝐓 – This alcohol-based extract/tincture comes...
  • 𝐐𝐔𝐈𝐂𝐊 𝐀𝐍𝐃 𝐂𝐎𝐍𝐕𝐄𝐍𝐈𝐄𝐍𝐓 - Unlike the traditional Essiac herbal liquid extract, no need to brew as...
  • 𝐓𝐇𝐄 𝐎𝐍𝐋𝐘 𝐀𝐔𝐓𝐇𝐄𝐍𝐓𝐈𝐂 𝐄𝐒𝐒𝐈𝐀𝐂 – During the early 1920’s, nurse Rene Caisse was given...
Bestseller No. 2
ESSIAC All-Natural Herbal Extract Capsules – 60 capsules | Powerful Antioxidant Blend to Help...
  • 𝟏𝟎𝟎% 𝐏𝐋𝐀𝐍𝐓 𝐁𝐀𝐒𝐄𝐃 – The natural herbal remedy, Essiac, helps normalize the body by aiding in the promotion of...
  • 𝐏𝐎𝐖𝐄𝐑𝐅𝐔𝐋 𝐀𝐍𝐓𝐈𝐎𝐗𝐈𝐃𝐀𝐍𝐓𝐒 – Essiac is formulated to contain an abundance of powerful...
  • 𝐂𝐎𝐍𝐂𝐄𝐍𝐓𝐑𝐀𝐓𝐄𝐃 𝐄𝐗𝐓𝐑𝐀𝐂𝐓 𝐂𝐀𝐏𝐒𝐔𝐋𝐄𝐒 – The herbs are macerated, then the...
  • 𝐐𝐔𝐈𝐂𝐊 𝐀𝐍𝐃 𝐂𝐎𝐍𝐕𝐄𝐍𝐈𝐄𝐍𝐓 - Unlike the traditional Essiac herbal tea powder, no need to brew as the...
  • 𝐓𝐇𝐄 𝐎𝐍𝐋𝐘 𝐀𝐔𝐓𝐇𝐄𝐍𝐓𝐈𝐂 𝐄𝐒𝐒𝐈𝐀𝐂 – During the early 1920’s, nurse Rene Caisse was given...
SaleBestseller No. 3
ESSIAC Gold All-Natural Herbal Extract with Mushroom Derived AHCC for Enhanced Immune Support – 60...
  • 𝐏𝐎𝐖𝐄𝐑𝐅𝐔𝐋 𝐈𝐌𝐌𝐔𝐍𝐄 𝐒𝐔𝐏𝐏𝐎𝐑𝐓 – Essiac Gold is an organic and wild crafted herbal remedy...
  • 𝐒𝐔𝐏𝐏𝐎𝐑𝐓𝐒 𝐈𝐌𝐌𝐔𝐍𝐄 𝐇𝐄𝐀𝐋𝐓𝐇, 𝐋𝐎𝐍𝐆𝐄𝐕𝐈𝐓𝐘 & 𝐍𝐊 𝐂𝐄𝐋𝐋...
  • 𝐂𝐋𝐈𝐍𝐈𝐂𝐀𝐋𝐋𝐘 𝐏𝐑𝐎𝐕𝐄𝐍 𝐈𝐍 𝐎𝐕𝐄𝐑 𝟑𝟎 𝐇𝐔𝐌𝐀𝐍...
  • 𝐐𝐔𝐈𝐂𝐊 𝐀𝐍𝐃 𝐂𝐎𝐍𝐕𝐄𝐍𝐈𝐄𝐍𝐓 - Unlike the traditional Essiac herbal tea powder, there is no need to brew...
  • 𝐓𝐇𝐄 𝐎𝐍𝐋𝐘 𝐀𝐔𝐓𝐇𝐄𝐍𝐓𝐈𝐂 𝐄𝐒𝐒𝐈𝐀𝐂 – During the early 1920’s, nurse Rene Caisse learned...
Bestseller No. 4
Essiac liquid Extract 10.5 fl oz (3 Pack)
  • ESSIAC liquid Extract 300 ml
  • Essiac liquid extract 10.5 fl oz
  • Essiac canada international
  • Essiac immune system support
  • Made only in Canada.
SaleBestseller No. 5
Essiac Vegetable Caps 60 Caps x 3 (180)
  • THE ORIGINAL CANADIAN HERBAL FORMULA.
SaleBestseller No. 6
ESSIAC ORIGINAL Herbal Tea Powder – 1.5 oz Bottle | Powerful Antioxidant Blend to Help Promote...
  • 𝐇𝐄𝐑𝐁𝐀𝐋 𝐏𝐎𝐖𝐃𝐄𝐑 – The natural herbal remedy, Essiac, helps normalize the body by aiding in the promotion of...
  • 𝐏𝐎𝐖𝐄𝐑𝐅𝐔𝐋 𝐀𝐍𝐓𝐈𝐎𝐗𝐈𝐃𝐀𝐍𝐓𝐒 – Essiac is formulated to contain an abundance of powerful...
  • 𝟏𝟎𝟎% 𝐏𝐋𝐀𝐍𝐓 𝐁𝐀𝐒𝐄𝐃 – Since 1922, our Essiac traditional tea formulation has contained a proprietary blend of...
  • 𝐒𝐓𝐑𝐎𝐍𝐆 𝐇𝐄𝐑𝐁𝐀𝐋 𝐅𝐎𝐑𝐌𝐔𝐋𝐀𝐓𝐈𝐎𝐍 - One bottle of Essiac Herbal Tea Powder makes 72 fl oz...
  • 𝐓𝐇𝐄 𝐎𝐍𝐋𝐘 𝐀𝐔𝐓𝐇𝐄𝐍𝐓𝐈𝐂 𝐄𝐒𝐒𝐈𝐀𝐂 – During the early 1920’s, nurse Rene Caisse was given...
Bestseller No. 7
NOW Supplements, Ojibwa Herbal Extract 450 mg, Concentrated Blend of High Quality, Alcohol-fFree,...
  • 4:1 EXTRACTS: A concentrated blend of high-quality, alcohol-free, 4:1 herbal extracts
  • HERBAL SUPPLEMENT: Formulated according to a traditional Native American Ojibwa formula
  • INSTRUCTIONS: Take 1 capsule 3 times daily, preferably 30 minutes before meals or at bedtime. Store in a cool, dry place after opening
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our...
  • Packaged in the USA by a family owned and operated company since 1968
SaleBestseller No. 8
The Native American Herbalist’s Bible • 3-in-1 Companion to Herbal Medicine: Theory and...
  • Naranjo, Linda Osceola (Author)
  • English (Publication Language)
  • 266 Pages - 02/09/2021 (Publication Date) - Independently published (Publisher)
SaleBestseller No. 9
16-Ounce Amber Glass Bottles with Reusable Chalk Labels and Lids (2 Pack), Refillable Brown Boston...
  • VALUE SET OF 2: Receive 2 brown glass 16-ounce bottles, 2 ribbed phenolic caps, and 2 black chalk labels
  • AROMATHERAPY FRIENDLY: Amber glass provides UV protection for all your essential oil applications. Also great for DIY household use.
  • CAPACITY: 16 ounces = 2 cups = 475 milliliters; SIZE: Standard Boston round 6.7 inches tall x 3 inches diameter; neck size 28-400
  • SAFE: Glass bottles are microwave safe and dishwasher safe; hand wash lids for best results
  • SAFER: Glass is reusable, sturdy and safest for storage of chemicals, alcohol and hydrogen peroxide
SaleBestseller No. 10
ESSIAC Tea All-Natural Organic and Wild-Crafted Daily Drops for Enhanced Lymphatic Drainage and...
  • 𝗘𝗦𝗦𝗜𝗔𝗖 𝗗𝗥𝗢𝗣𝗦 - The Classic Essiac herbal supplement formula is now available in a convenient concentrated daily drop....
  • 𝐏𝐎𝐖𝐄𝐑𝐅𝐔𝐋 𝐀𝐍𝐓𝐈𝐎𝐗𝐈𝐃𝐀𝐍𝐓𝐒 - Essiac is formulated to contain an abundance of powerful...
  • 𝐂𝐎𝐍𝐕𝐄𝐍𝐈𝐄𝐍𝐓 𝐃𝐑𝐎𝐏𝐏𝐄𝐑 - Our Essiac Daily Drops are made by certified herbalists using maceration and...
  • 𝟏𝟎𝟎% 𝐏𝐋𝐀𝐍𝐓 𝐁𝐀𝐒𝐄𝐃 – Essiac natural herbal remedy is made from 100% organic and wild crafted herbs. Essiac...
  • 𝐓𝐇𝐄 𝐎𝐍𝐋𝐘 𝐀𝐔𝐓𝐇𝐄𝐍𝐓𝐈𝐂 𝐄𝐒𝐒𝐈𝐀𝐂 – During the early 1920’s, nurse Rene Caisse was given...
Bestseller No. 11
Essiac Tea, 32 Ounce Extract | Immune System, Liver and Lymphatic Support | Based on Original Recipe...
  • MADE FRESH WEEKLY: We Brew, Bottle and Ship to Amazon weekly and will never sell our products to a third party to ensure you always get the freshest...
  • THE BOOST YOU DESERVE: Essiac tea is rich in Vitamins, Minerals, Antioxidants and can act as a natural anti-inflammatory when consumed. Because of the...
  • 32 SERVINGS PER BOTTLE WITH SUPERIOR ABSORPTION: We chose to sell our Essiac as a liquid extract instead of a pill because, for many, it is easier to...
  • E-BLEND IS A READY TO USE CONCENTRATE: Comes packaged in 32 fl. oz. Amber Glass Bottle and is intended to be reconstituted at a ratio of 1 fl. oz. of...
  • HANDCRAFTED & MADE IN THE USA WITH THE FINEST INGREDIENTS: Many people have kindly said we make the best form of this tea over the last 20 years; we...
Bestseller No. 12
Raw Earth Essiac Tea Concentrated Live Extract | Vegan, Non-GMO, Gluten-Free | Immune System...
  • ORIGINAL RECIPE BACKGROUND: Original recipe herbal blend was handed down through word of mouth by Northern Canadian Ojibway Indians for hundreds of...
  • NURSE CAISSE’S PRIZED 8 HERB RECIPE: We feel blessed to have trusted friends of Nurse Caisse share these very special 8 recipes with us so we may...
  • ESSIAC TEA HERBAL BLEND INGREDIENTS: Every herb in Optimally Organic’s Organic Essiac Tea offers a myriad of tried and true benefits. Organic Essiac...
  • ORGANIC HERBAL BLEND BENEFITS: Essiac tea is a blend of different herbs, including burdock root, slippery elm, sheep sorrel, Indian rhubarb. Essiac...
  • General Health Use Directions: Take a pinch of powdered Essiac Tea Herbs (1/4 teaspoon) and add to 3.5oz of boiling water (the water will boil down to...
Bestseller No. 13
Essiac Tea Softgels, 711 mg, 3 Pack 360 Soft Gels, Eight Herb Essiac Tea, All Natural, Organic...
  • We are the manufacturer, buy direct from us and get Free USA Super Saver Shipping
  • No mixing, no brewing, easy to swallow
  • Very easy to use, take it with you wherever you go.
Bestseller No. 14
Essiac International Tru-Pine Liquid Pine Bark Extract, 10.14 Fluid Ounce
  • Product Type:Health Personal Care
  • Item Package Dimension:11.176 cm L X5.588 cm W X12.7 cm H
  • Item Package Weight:0.75 lbs
  • Country Of Origin: United States
Bestseller No. 15
Essiac Tea Softgels, 711 mg, 3 Pack 360 Soft Gels, Eight Herb Essiac Tea, All Natural, Organic...
  • We are the manufacturer, buy direct from us and get Free USA Super Saver Shipping
  • No mixing, no brewing, easy to swallow
  • Very easy to use, take it with you wherever you go.
Bestseller No. 16
The Burzynski Breakthrough: The Most Promising Cancer Treatment and the Government's Campaign to...
  • Thomas D. Elias (Author)
  • English (Publication Language)
  • 360 Pages - 10/28/2009 (Publication Date) - Lexikos Books (Publisher)
Bestseller No. 17
HumanN SuperBeets Heart Chews - Nitric Oxide Production for Daily Blood Pressure Support &...
  • Support Healthy Blood Pressure & Energy – Powered by clinically researched French Grape Seed Extract, the unique antioxidant compound in SuperBeets...
  • Plant-Based, Clinically Studied Heart Health Support – The clinically studied polyphenols in plant-based, non-GMO, caffeine-free SuperBeets Heart...
  • French Grape Seed Extract & Non-GMO Beet Root Powder – Each serving delivers 150mg clinically researched Grape Seed Extract from the famous Loire...
  • Delicious, Fun Portable Beet Chews - SuperBeets Heart Chews are individually wrapped, making them the perfect on-the-go heart health support...
  • #1 PHARMACIST-RECOMMENDED BEET BRAND: for Heart Health Support & Cardiovascular Health Support according to IQVIA ProVoice Survey 2022. Enjoy the...
Bestseller No. 18
Zazzee Ojibwa Tea, 180 Vegan Capsules, 500 mg, Rene Caisse's Original Formula‎, Burdock, Sheep...
  • ORIGINAL 4-HERB INDIAN RECIPE – ONLY BETTER! Our Ojibwa Tea Capsules start with the same classic blend of herbs used for years in the traditional...
  • 4:1 EXTRACTS FOR MAXIMUM STRENGTH DOSAGE: Our Ojibwa Tea Capsules are made from herbs that are 4:1 extracts. A 4:1 extract means that the herb itself...
  • SUPER VALUE: Each bottle contains 180 veggie capsules, and each capsule is 500 mg. Because Ojibwa Tea Capsules are made from 4:1 extracts, this is...
  • 100% VEGETARIAN AND STABILIZED ORGANICALLY: Our Ojibwa Tea Capsules are derived from all-natural, vegan, non-GMO sources. While other competing...
  • GOLD STANDARD PRODUCTION: Your health and safety mean everything to us. For that reason, our Ojibwa Tea Capsules are manufactured in the USA, in a...
Bestseller No. 19
Organa All Natural Essiac Tea - Pure Essiac Liquid Herbal Supplement - Organic and WildCrafted Herbs
  • ✅ FIGHT STRESS & SLEEP BETTER: Rich in VITAMINS, MINERALS and ANTI-OXIDANTS, the herbal tea purifies the body from harmful toxins build-up, helping...
  • ✅ =>BUY 2 FOR $47 DOLLARS: Type in ATXKHQKP to the Promotion Code @ Checkout=<
  • ✅ A POTENT ORGANIC FORMULA: Made up of five botanicals including sheep sorrel, burdock root, the inner bark of the slippery elm, indian rhubarb and...
  • ✅ PROUDLY MADE IN THE USA: Steer clear of health supplements with an uncertain manufacture origin, which could put your health at risk! Manufactured...
  • ✅ 30 Day MONEY BACK GUARANTEE! We take pride in the quality and efficiency of our Essiac Tea Tonic and we know you will be thrilled with its potent...
Bestseller No. 20
Essiac Tonic - 120 Softgels
  • Contains one 120-count bottle of Essiac softgels
  • Activates whole body detoxification
  • Cleanses the liver and blood
  • Enhances your body’s natural cleansing capabilities
  • Provides herbal support during seasonal fasts and cleanses

Having trouble finding a great essiac herbal extract?

This problem is well understood by us because we have gone through the entire essiac herbal extract research process ourselves, which is why we have put together a comprehensive list of the best essiac herbal extracts available in the market today.

After hours of searching and using all the models on the market, we have found the best essiac herbal extract for 2023. See our ranking below!

How Do You Buy The Best Essiac Herbal Extract?

Do you get stressed out thinking about shopping for a great essiac herbal extract? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching essiac herbal extract, which is why we have assembled a comprehensive list of the greatest essiac herbal extract available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for essiac herbal extract that you consider buying. Your questions might include the following:

  • Is it worth buying an essiac herbal extract?
  • What benefits are there with buying an essiac herbal extract?
  • What factors deserve consideration when shopping for an effective essiac herbal extract?
  • Why is it crucial to invest in any essiac herbal extract, much less the best one?
  • Which essiac herbal extract are good in the current market?
  • Where can you find information like this about essiac herbal extract?

We’re convinced that you likely have far more questions than just these regarding essiac herbal extract, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for essiac herbal extract, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible essiac herbal extract. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an essiac herbal extract buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available essiac herbal extract currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of essiac herbal extract has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an essiac herbal extract?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your essiac herbal extract.
  5. Customer Ratings: Number ratings grade essiac herbal extract objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their essiac herbal extract.
  7. Product Quality: You don’t always get what you pay for with an essiac herbal extract, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an essiac herbal extract is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining essiac herbal extract information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding essiac herbal extract is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What is Essiac good for?

A: Essiac has become widely known for its remarkable ability to boost the immune system and detoxify the body. Many people who drink Essiac tea regularly report feeling healthier with less incidence of colds and flu. Burdock, for example, has a well-established reputation for detoxification and support of the liver and organs of elimination.

Q: Does Essiac tea really work?

A: Many people wonder, “Does Essiac Really Work?” The answer is Yes – as long as you are using a genuine, authentic formula. The reason you’re here on this site right now is most likely that someone told you to check out essiac tea – and that’s because it works! Unfortunately, it can be tricky to figure out which brand is best.

Q: What is Essiac used for?

A: While it has most notably been used for its anticancer effects, essiac may hold potential to help treat conditions including gastrointestinal diseases, diabetes and even AIDS too. What Is Essiac Tea? Essiac tea is a tonic made from a mixture of roots, bark and leaves.

Q: Why Essiac tea is famous for Cancer Support?

A: Mid-1970s: A study conducted by Memorial Sloan Kettering Cancer Center (MSKCC) tested Essiac on mice with cancer. … 1980s: MSKCC continued testing Essiac on animals with cancer. … 1983: The National Cancer Institute tested Essiac in mice with leukemia and found no anti-cancer effect. …