KOS Review

About KOS

KOS Review

KOS is a health supplement brand with a wide selection of plant-based products including plant proteins, functional ingredients, specialty supplements, and daily nutritious blends.

They have been at the forefront of vegan products by using organic and sustainably sourced ingredients to feed the world based on a “Hippocratic approach to health” that involves no harm to any living being.

KOS is on a mission to fuel communities with sustainable, nourishing, and organic health and has gained over 78k Instagram followers. The brand has been featured on several media outlets such as Healthline, Popsugar, and Women’s Health Magazine

To help you decide whether their products are worth adding to your health routine, this KOS review will take an in-depth look at things like the company’s philosophy, key ingredients, customer ratings, promotions, and more.

Overview of KOS

KOS Review

KOS launched in 2018 with a single purpose: “To upgrade individual wellness and quality of life for the conscious consumer.” The company is now located in Southern California, where the formulas are made with organic ingredients approved by the California Certified Organic Farmers Association.

KOS is hopeful in empowering more and more individuals on their journey toward transitioning to plant-sourced nourishment and a lifestyle that supports food balance in the world.

Now that you know a little more about the brand, our KOS review will go over some highlights before diving into the best-selling products.


  • Offers plant proteins, superfoods, and other functional supplements to address a wide range of health needs such as energy, immunity, gut health, and sleep
  • Made with USDA organic plant-based ingredients
  • Reasonable pricing
  • Vegan, soy, dairy, and gluten-free
  • Subscribe and Save Program enables customers to get a 15% discount   
  • Free Shipping on orders over $50
  • Risk-free, 60-day free returns
  • Over 10,000 5-star reviews
  • Made in the United States

KOS Protein Powder Organic Vegan Plant Based Review

KOS Protein Powder Organic Vegan Plant Based Review
KOS Protein Powder Organic Vegan Plant Based Review

First in this KOS review, I’m going to start with the KOS Protein Powder. This powder comes in unflavored, vanilla, chocolate, and more. You can also find this protein in different sizes, from a single serving to 10, 14, and 30 serving containers.

This is great for people who would like to try it first before committing to a whole tub of KOS protein. A 30-serving container of KOS protein will cost you: 

One-time purchase:

  • 1-pack: $50
  • 2-pack: $45 per container 
  • 3-pack: $40 per container

Subscribe & Save Plan: 

  • $42 and can be customized to be delivered to you every 30, 45, 60, or 90 days.

The price of a 10-serving container of KOS protein is:

One-time purchase

  • 1-pack: $25
  • 2-pack: $22 per unit 
  • 3-pack: $20 per unit

Subscribe & Save Plan: 

  • $21 and can be customized to be delivered to you every 30, 45, 60, or 90 days

Now, if you choose to buy a box of 12 individually packed KOS Protein powders, the one-time purchase prices would be:

  • 1-pack $30
  • 2-pack $27 per unit 
  • 3-pack $24 per unit

Ingredients Label

The sources of plant protein in this product are organic peas, flaxseeds, quinoa, pumpkin seeds, and chia seed protein.

KOS plant-based protein’s natural ingredients include organic coconut sugar, monk fruit, and whole stevia leaf for added sweetness plus inulin. 

The whole-food ingredients which provide the vitamins in this formula are fruits and vegetables such as apples, carrots, cranberries, oranges, broccoli, shiitake mushroom, and tomato.

Its complete digestive enzyme blend consists of amylase, lactase, protease, lipase, and cellulase. 

Some of the other ingredients in KOS protein include organic coconut milk, alkalized cocoa, acacia gum, and Himalayan pink salt, plus a multivitamin and mineral blend including:

  1. DL-alpha-tocopherol
  2. Manganese
  3. Molybdenum
  4. Selenium Amino Acid Chelates
  5. Zinc Oxide
  6. Potassium Iodide
  7. Copper Oxide
  8. Riboflavin
  9. Niacinamide
  10. Chromium Picolinate
  11. Cyanocobalamin
  12. Folic Acid
  13. Phylloquinone

Nutritional Value

Each serving of two scoops of KOS Protein Powder gives your body 160 calories, 6g of total fat, 9g of carbs, 3g of dietary fiber, 2g of sugar (includes the added sugars), and 20g of protein. 

Some of the other micronutrients in this blend are:

  • Sodium: 330mg
  • Iron: 5mg
  • Vitamin E: 6.6mg
  • Vitamin B2: 0.5mg
  • Folate: 20mcg
  • Iodine: 30mcg
  • Selenium: 29mcg
  • Managanse: 0.8mg
  • Calcium: 50mg
  • Potassium: 190mg
  • Vitamin K: 2mcg
  • Niacin: 3.1mg
  • Vitamin B12: 1.1mcg
  • Zinc: 1.6mg
  • Copper: 0.8mg
  • Chromium: 20mcg
  • Molybdenum: 30mcg


Thanks to its complete formula, KOS Organic Plant Based Protein Powder can be considered a protein, multivitamin mineral, and meal-replacement shake.

One serving of the powder will energize you for the day with a nice blend of essential amino acids, the building blocks of protein. 

It’s also packed with many good minerals such as chromium[1] and inulin[2] to balance your blood sugar levels. So you won’t experience a sugar crash after a few hours of drinking your shake.

Chromium picolinate[3], specifically, has also been shown to help reduce the risk of heart disease and type 2 diabetes.

The B vitamins present in KOS Protein are niacinamide (a form of B3), cyanocobalamin (B12), riboflavin (B2), and folic acid (B9). These are all in charge of impacting your mental health and metabolism, or converting your food into energy, improving skin health, and boosting brain function. 

Minerals such as calcium, zinc, and potassium make KOS protein an all-in-one option if you are not getting enough of those nutrients through your daily diet. These minerals help keep your body alkalized[4] while supporting your immunity and maintaining healthy bones, muscles, blood vessels, and nerves.

How Does It Work

The other noteworthy benefit of KOS plant-based protein is that despite the other animal-sourced protein supplements on the market, it comes with the right enzymes to help you break down and utilize fats, proteins, and carbs. 

Amylase is in charge of breaking down carbs or starches. Lipase helps your liver break down fats, and protease breaks down proteins into amino acids. This enzyme also helps keep toxicity away and out of your intestines.

In addition to the enzymes, 3g of dietary fiber in the blend reduces bloating or risks of constipation. I found that the presence of DigeSEB enzymes in this formula is a huge plus because while nourishing your body with nutrients, it keeps your gut and liver happy and healthy as well.  

If you are vegan and taking KOS protein, you don’t have to worry about missing any important nutrients[5] in your diet, such as B12[6], iron[7], or omega-3[8] that most vegans are concerned about. 

The flax[9] and chia seeds in KOS protein powder provide you with vegan sources of omega-3 fatty acids and antioxidants to help your body fight inflammation and prevent disease.

How to Take & Dosage

KOS recommends mixing one serving (two scoops) of the plant protein powder in a large glass of the beverage of your choice, or using it in baking recipes just like flour.

If you are skipping a meal to cut some calories, you can use this protein powder as a meal-replacement drink up to two times a day.

KOS Matcha Tea Capsules Review

KOS Matcha Tea Capsules Review
KOS Matcha Tea Capsules Review

KOS Matcha Tea Capsules takes all the antioxidant benefits of matcha and delivers it in a convenient capsule form. So if you’re always on the go and can’t stop for that midday tea time, KOS has you covered.

There are a few pricing options available, which I’ll cover before giving you the full product overview.


One-time purchase:

  • 1-pack: $20
  • Buy 2 get 1 Free: $40 or $13 per unit 
  • Buy 4 Get 2 Free: $80 or $13 per unit

Subscribe & Save 15% Plan: 

  • $17 and can be customized to be delivered to you every 30, 45, 60, or 90 days

Ingredients Label

Each 120 capsule bottle of KOS Matcha Tea has 40 servings. Your three daily matcha capsules are filled with numerous healing benefits from tea leaves which this KOS Matcha Tea review will get into in a bit.  

Nutritional Value

Each serving of KOS Matcha Green Tea contains 1,500mg of organic matcha tea leaf and pullulan to make the vegetarian capsules.


Even though green tea has been used in eastern cultures for hundreds of years for its amazing therapeutic benefits, it has recently become popular in the West.

Matcha[10] is a kind of green tea that has been finely powdered into a beautiful and vibrant green substance. It is high in antioxidants to help your body fight free radicals and chronic diseases. 

L-theanine[11] is another compound found in matcha tea known for modifying the effects of the caffeine content in tea. It is an amino acid that eases insomnia, anxiety, and stress.

If you are a regular coffee drinker, you might have experienced that energy crash after caffeine wears off. Studies have shown that L-theanine in matcha tea promotes good mood and alertness[12] while reducing stress levels[13].

How Does It Work

Besides matcha’s wonderful cognitive function boosting properties, several studies[14] have concluded that matcha tea can reduce levels of total and LDL cholesterol as well as triglycerides in your body. 

That’s good news because just three KOS Matcha Tea capsules a day can be such a beneficial addition to your routine if you are looking to maintain a healthy heart

One last positive point about matcha that we should add here is its role in fat burning[15] and boosting your metabolism. So if you are thinking of shedding a couple of extra pounds or maintaining your weight[16], KOS Matcha capsules, along with a clean diet and exercise, can help you make this goal come true. 

How to Take & Dosage

You should take three Matcha Green Tea capsules daily. 

KOS Daily Greens Powder Review

KOS Daily Greens Powder Review
KOS Daily Greens Powder Review

The final product in our KOS review is the brand’s greens powder. Each 266g tub of KOS Daily Greens Powder contains 28 servings and comes in a delicious green apple sorbet flavor. It won a silver award for Consumer’s Choice back in 2020 by DeliciousLiving. Here’s how the cost breaks down:

One-time purchase:

  • 1-pack: $33
  • 2-pack: $30 per unit 
  • 3-pack: $26 per unit

Subscribe & Save 15% Plan:

  • $28 and can be customized to be delivered to you every 30, 45, 60, or 90 days

Ingredients Label

KOS Greens contains four different healthful blends:

  1. Algae Superfood Blend: chlorella and spirulina
  2. Alkalizing Greens Blend: wheatgrass juice powder, wheatgrass whole powder, and oat grass whole powder
  3. Fruits and Veggie Blend: lemon juice powder, cabbage powder, kale powder, broccoli, apple, and green bell pepper
  4. Digestive Prebiotic Blend: organic isomalto-oligosaccharide and acacia gum

Other ingredients in this product are organic apple flavor, monk fruit extract, mint flavor, and stevia extract.

Nutritional Value

Each scoop of KOS greens is 30 calories and contains 0g of fat, 6g of carbs, 2g of dietary fiber, 1g of sugar, 1g of protein, 28mg of calcium, 3mg of iron, 20mg of sodium, and 119mg of potassium. 

As for the proprietary blends, KOS Greens Powder contains 250mg of the Algae Superfood Blend, 4g of the Alkalizing Greens Blend, 3.25g of the Fruits and Veggie Blend, and 2g of the Digestive Prebiotic Blend.


KOS Green Powder is a supplement you should keep in your cupboard if you need a daily detoxifier that gives you enough of the most important micronutrients. The protein content of this blend is very low.

If you eat a moderately clean diet but have trouble getting enough fruits and veggies, or if your diet lacks enough fiber, these daily greens can support you thanks to its chlorophyll-packed fibrous greens.

Loads of chlorophyll is found in this supplement. This pigment gives plants and algae their green color and is essential for balanced PH levels. It can also help you maintain a healthy weight and improve your gut health while fueling your friendly intestinal bacteria.  

Ingredients such as wheatgrass juice powder, kale, and oat grass play a significant role in giving you high levels of antioxidants[17] and anti-inflammatory compounds to help boost your immune system and assist your liver with detoxification[18].

Lemon extract, green pepper, and broccoli are rich sources of vitamin C, a potent antioxidant in charge of healthy-looking skin[19], strong immunity[20], and more.

How Does It Work

KOS Daily Greens takes only one minute to make, but it has so much to offer. The organic greens blend is formulated in an NSF-certified facility with all your digestive and immunity needs in mind.

A full spectrum of vitamins and minerals sourced from whole foods without artificial ingredients is a refreshing and natural way to target your overall health from different angles.

All ingredients in KOS green powder are powerhouses of nutrients, thoughtfully selected to nourish and strengthen your body against harmful toxins. 

How to Take & Dosage

To enjoy the wonderful benefits of this green powder, blend one scoop in a glass of your favorite beverage or a smoothie and take on an empty stomach in the morning. This will help replenish lost minerals and alkalize your body.

Who Is KOS For?

KOS Review

KOS protein powders and daily nutritional blends are perfect for anyone who wants to eat a balanced diet that covers their macro and micronutrient needs.

If you are looking for a meal replacement supplement to start your day, drinking KOS plant-based protein will give you energy. You can also add this product to your busy daily routine if you are searching for a protein powder that supports weight loss as well.

Matcha tea capsules are great if you want a natural remedy to give your nervous system some love and reduce your stress levels.

Since eating enough greens regularly benefits anyone who wants a healthy gut microbiome, the KOS tasty greens powder is the most convenient option for those wanting to start adding greens to their families’ diets.

KOS Side Effects

KOS Review

While I reviewed these three products, I looked to find potential KOS side effects to warn you about, and I didn’t see any severe issues linked to their products.

However, it’s important to remember that you can never out-supplement a bad diet or lifestyle. Adding a greens powder or an all-in-one shake into your diet without changing your current routine isn’t the way to achieve optimal gut health, immunity, weight loss, or glowing skin.

As mentioned on their help page, if you are on medication or have a severe health condition, talk to your doctor before adding any KOS products into your regime.

KOS Reviews: What Do Customers Think?

KOS Review

I found a lot of positive KOS reviews full of praise towards this brand on different platforms:

On the KOS website:

  • KOS Organic Vegan Plant Based Protein Powder: 4.8/5 stars over 95 reviews
  • KOS Organic Daily Greens: 4.8/5 stars over 21 reviews

On Amazon:

  • KOS Organic Vegan Plant Based Protein Powder: 4.4/5 stars over 2,014 customer reviews
  • KOS Organic Daily Greens: 4.5/5 stars over 1,602 reviews


  • KOS Organic Vegan Plant Based Protein Powder: 4.7/5 stars over 19 customer reviews
  • KOS Organic Daily Greens: 5/5 stars over 5 reviews

One satisfied customer had this to say about the Daily Greens: “I’m 73 with IBS so I must watch what I eat and I do so miss my daily salads which I can no longer enjoy. 

Unable to process/digest this type of whole food, I’ve come to rely of powdered greens to help bridge the gap in my loss of vitamins and such… I am so impressed and delighted to have discovered this product!”

Another Daily Greens fan wrote: “It has organic all natural ingredients which is super important to me.  The flavor is great also!  Definitely affordable.  I will definitely be purchasing this product again in the future.  I find it hard to eat enough green food that I like so this helps me get in tasty greens everyday.”

KOS’ products seem to be well-loved across the different websites I looked at. Customers appreciated the health benefits each of your featured products gives them, and they are over the moon about the positive changes to their health. 

In short, this brand is a hit with their customers.

Is KOS Legit?

KOS Review

In terms of shipping and customer service, KOS help center seems to have the answers to most common questions. I’m unsure how responsive they are when it comes to problem-solving, but as far as this KOS review goes, I didn’t find any complaints or low ratings related to customer service. 

Based on what I found, the brand runs all their products through extensive testing for a full spectrum of contaminants such as heavy metals and bacteria while following current Good Manufacturing Practices to ensure they meet the proper standards of purity. 

What’s more, most ingredients in KOS products are certified organic, meaning they’re free from pesticides, artificial colors, and hormones. Not only did I not find any red flags about this brand, but for anyone concerned about the packaging of the supplements, it is reassuring to know that KOS avoids using BPA.

Is KOS Worth It?

KOS Review

Nearing the end of this KOS review, you may be wondering: is this brand worth buying from? It sure is. First of all, KOS products are reasonably priced, and according to customers, they taste better than the average products on the market. 

Plus, KOS ingredients are all organic and free from common allergens making the products a great option for people with food sensitivities. They provide research that backs up the potency and efficacy of each ingredient.

Another big plus is that no fillers, artificial ingredients, GMOs, or additives have been used in KOS products. So you’re always getting the best of the best while helping KOS on its mission to give back by preventing food insecurity and feeding America’s chronically hungry.

KOS Promotions & Discounts 

KOS Review

You can sign up for the KOS Subscribe & Save program and get 15% off your automatically delivered orders. You can also get on their newsletter to receive exclusive deals and promotions.

Another way to take advantage of the offered rewards is to become a member of their KOSmic rewards program and earn points (stars) every time you purchase a KOS product. You can redeem your stars for discounts and more.

Where to Buy KOS

KOS Review

It is best to purchase your favorite products on KOS.com to take advantage of the Subscribe and Save plan and earn points. Amazon and WholeFood market are other platforms to order KOS products from. 


Is KOS vegan?  

KOS protein and daily green powders, and the Matcha Capsules are all plant-based and vegan. Note that the Matcha Capsules don’t have the vegan certified logo on the label.

Is KOS gluten-free?

The Matcha Caps and the KOS protein are gluten-free. However, the green powder does not carry a gluten-free logo. 

What is KOS’ Shipping Policy?

KOS only ships within the contiguous US. Orders ship out of their warehouse in Anaheim, California, and the processing time is usually 2 business days. KOS uses different carriers to guarantee deliveries.

If you order from KOS.com and you live in the US, you can choose either standard or expedited shipping and can expect to receive your order within 2-3 days, depending on your location and availability.

Whenever there is a delay in delivery times for any reason, you will automatically be notified. Here’s what their shipping fees are:

  • Flat $7 for orders under $50 
  • Free for orders over $50 (after any discount)
  • Flat $20

For more information about the locations outside of the 48 contiguous states, you can visit the KOS Shipping Policy page. 

What is KOS’ Return Policy?

KOS offers a risk-free 60-day return policy. If you are not happy with your purchase, you can start a return within two months of buying your product and get a full refund minus the postage fees.  

If you need help with the return process, you can call the KOS support line at 1-844-586-4567. They are available Monday through Friday from 9:00 am to 5:00 pm PST or you can email them at the address below. You can also use this self-guided return request form

How to Contact KOS

If you have more questions afte reading this KOS review, you can contact them using one of the below:

  1. Phone: 1 (833) 344-4567
  2. Email: [email protected].

They are available by phone weekdays from 9:00 am to 5:00 pm PST. You can also get in touch with them on social media or use the live chat option on their official website.

For more plant-based wellness focused brands, check out these ones we’ve reviewed:

Ora Organic Supplements Review

Plant People Review

Rae Wellness Supplements Review

Best Lions Mane Supplements

Article Sources

[1] Havel PJ A scientific review: the role of chromium in insulin resistance National Library of Medicine Diabetes Educ. 2004;Suppl:2-14. PMID: 15208835
[2] Jackson KG, Taylor GR, Clohessy AM, Williams CM The effect of the daily intake of inulin on fasting lipid, insulin and glucose concentrations in middle-aged men and women National Library of Medicine Br J Nutr. 1999 Jul;82(1):23-30
[3] Hummel M, Standl E, Schnell O Chromium in metabolic and cardiovascular disease National Library of Medicine Horm Metab Res. 2007 Oct;39(10):743-51
[4] Tobey JA The Question of Acid and Alkali Forming Foods National Library of Medicine Am J Public Health Nations Health. 1936 Nov;26(11):1113-6
[5] Craig WJ, Mangels AR American Dietetic Association. Position of the American Dietetic Association: vegetarian diets National Library of Medicine J Am Diet Assoc. 2009 Jul;109(7):1266-82
[6] Pawlak R, Lester SE, Babatunde T The prevalence of cobalamin deficiency among vegetarians assessed by serum vitamin B12: a review of literature National Library of Medicine Eur J Clin Nutr. 2014 May;68(5):541-8; Erratum in: Eur J Clin Nutr. 2016 Jul;70(7):866
[7] Craig WJ Health effects of vegan diets National Library of Medicine Am J Clin Nutr. 2009 May;89(5):1627S-1633S
[8] Saunders AV, Davis BC, Garg ML Omega-3 polyunsaturated fatty acids and vegetarian diets National Library of Medicine Med J Aust. 2013 Aug 19;199(S4):S22-6
[9] Goyal A, Sharma V, Upadhyay N, Gill S, Sihag M Flax and flaxseed oil: an ancient medicine & modern functional food National Library of Medicine J Food Sci Technol. 2014 Sep;51(9):1633-53
[10] Weiss DJ, Anderton CR Determination of catechins in matcha green tea by micellar electrokinetic chromatography National Library of Medicine J Chromatogr A. 2003 Sep 5;1011(1-2):173-80
[11] Nobre AC, Rao A, Owen GN L-theanine, a natural constituent in tea, and its effect on mental state Asia Pacific Journal of Clinical Nutrition Asia Pac J Clin Nutr 2008;17 (S1):167-168
[12] Dietz C, Dekker M, Piqueras-Fiszman B An intervention study on the effect of matcha tea, in drink and snack bar formats, on mood and cognitive performance National Library of Medicine Food Res Int. 2017 Sep;99(Pt 1):72-83
[13] Dodd FL, Kennedy DO, Riby LM, Haskell-Ramsay CF A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood National Library of Medicine Psychopharmacology (Berl). 2015 Jul;232(14):2563-76
[14] Zheng XX, Xu YL, Li SH, Liu XX, Hui R, Huang XH Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials National Library of Medicine Am J Clin Nutr. 2011 Aug;94(2):601-10
[15] Venables MC, Hulston CJ, Cox HR, Jeukendrup AE Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans National Library of Medicine Am J Clin Nutr. 2008 Mar;87(3):778-84
[16] Hursel R, Viechtbauer W, Westerterp-Plantenga MS The effects of green tea on weight loss and weight maintenance: a meta-analysis National Library of Medicine Int J Obes (Lond). 2009 Sep;33(9):956-61
[17] Pham-Huy LA, He H, Pham-Huy C Free radicals, antioxidants in disease and health National Library of Medicine Int J Biomed Sci. 2008 Jun;4(2):89-96
[18] Guan YS, He Q Plants Consumption and Liver Health National Library of Medicine Evid Based Complement Alternat Med. 2015;2015:824185
[19] Fuchs J, Kern H Modulation of UV-light-induced skin inflammation by d-alpha-tocopherol and l-ascorbic acid: a clinical study using solar simulated radiation Science Direct Modulation of UV-light-induced skin inflammation by d-alpha-tocopherol and l-ascorbic acid: a clinical study using solar simulated radiation
[20] Huijskens MJ, Walczak M, Koller N, Briedé JJ, Senden-Gijsbers BL, Schnijderberg MC, Bos GM, Germeraad WT Technical advance: ascorbic acid induces development of double-positive T cells from human hematopoietic stem cells in the absence of stromal cells National Library of Medicine J Leukoc Biol. 2014 Dec;96(6):1165-75

Ask the community or leave a comment

Your email address will not be published.

This field is required