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4.9/5 (671)

Plain Kefir

Creamy, rich, and traditional probiotic drink packed with calcium and protein to support, not only your gut health, but also bone health, muscle recovery, and immune function.

21 STRAINS | 100 TRILLION CFU | 16 FL OZ / 473 ML
Who it’s for
  • Women: Balance & Comfort

    Probiotics help reduce bloating, manage weight, promote vaginal health, and balance mood.

  • Digestive Support

    A healthy gut microbiome helps manage bloating, inflammation, and digestive issues like IBS and SIBO.

  • Kids Development

    A balanced gut supports immune function, digestion, and brain development for lifelong health.

  • Longevity

    A well-balanced gut supports digestion, immunity, and brain function for healthy aging.

  • Mental Performance

    A thriving gut supports brain function, reduces fog, improves sleep, and helps manage stress.

  • Recovery & Strength

    A strong gut supports muscle recovery, reduces inflammation, and improves nutrient absorption.

  • Biohacking

    A diverse microbiome enhances cognition, gut-brain connection, and full-body optimization.

What are probiotics + benefits?

Probiotics are live, friendly bacteria that lives in your gut (microbiome)—they live in balance with you and help in so many ways:

  • Better Gut Diversity.

    More probiotic strains and a higher CFU count help create a diverse, balanced microbiome.

  • Better Digestion & Absorption.

    Probiotic enzymes break down food efficiently, helping your body get more from less.

  • Less Bad Bacteria & Toxins.

    Good bacteria outnumber harmful microbes, bind to toxins, and neutralize harmful compounds.

  • Healthier Gut Lining.

    Probiotics reinforce the gut barrier, boost mucus, and tighten junctions to block toxins and inflammation.

  • Stronger Immune Function.

    With 70% of the immune system in the gut, probiotics help strengthen defenses and reduce inflammation.

  • Stronger Gut-Brain Connection.

    Probiotics support cognition, mood balance, and stress resilience through the gut-brain axis.

  • Detoxification & pH Balance.

    Probiotics generate SCFAs and neurotransmitters, creating a healthier gut environment.

Ingredients & Nutrition

Ingredients: Organic Whole Milk, Live & Active Probiotic Cultures.

nutritional facts of Plain Kefir by Kefir Lab

21 Potent Probiotic Strains

BIFIDOBACTERIUM: BIFIDUM, INFANTIS, LACTIS (2). LACTOBACILLUS: CASEI (5), ACIDOPHILUS (2), FERMENTUM, PLANTARUM, PARACASEI, RHAMNOSUS (3), DELBRUECKII (2). LEUCONOSTOC: MESENTEROIDES. STREPTOCOCCUS: THERMOPHILUS.

Instructions
  • The Probiotics are live and active – consume within 5 days after opening.
  • Keep refrigerated at 34-38°F (1-3°C).
  • Shake well and enjoy!
Packaging
  • Highly Recyclable
  • BPA Free
  • Chemical Free
  • IMS Certified
Delivery information

We ship Monday to Friday using the best next-day option with FedEx or UPS. While refrigeration in transit isn’t required, we include insulation and an ice pack for added protection. We recommend adding insurance at checkout for loss, theft, or damage. Please refrigerate upon arrival.

Delivery information

Shipping Method

We ship our products via the best available next-day shipping with FedEx, or UPS.

Shipping Rates

We offer a flat $10 shipping fee on all orders, with free shipping on orders above $150.

Shipping Time

Due to the perishable nature of our products, we ship orders Monday through Friday with next-day delivery.

Shipping Procedures

We take extra measures to ensure your order arrives in its best condition. That means we send Kefir Lab in a temperature-controlled package so it remains at a refrigerated-like state until it arrives at your door.

Shipping Temperature

Fermentation is a natural way of preserving food. Just like other highly probiotic supplements, you find on the market, our 100 Trillion Probiotic Kefirs & Shots do not need to stay cold during transit. That’s also to ensure the potent probiotics would survive through the “warm” digestion tract. Yet, we still like to insulate and add an ice pack in case of shipping delays. The 100 Trillion Probiotic Kefir is safe and delicious no matter what temperature it arrives at.

Shipping Insurance

At checkout, you can easily add our insurance to cover your parcel against loss, theft, or damage. This option ensures quick resolutions within 24 hours for any unforeseen events, providing peace of mind with just one click.

International Shipping

We offer international shipping on our 100 Trillion Probiotic shots to Canada, Australia, the UK, and the EU. The shipping rate is automatically generated upon checkout with FedEx Priority (3-5 business days delivery).

Shipping Delays

Kefir Lab is not responsible for any shipping delays caused by the shipping carrier, weather, or other circumstances beyond our control. However, we will do our best to keep you informed of any delays and work with the shipping carrier to resolve any issues.

Missing or Lost Packages

If a package is lost or missing, please get in touch with us immediately at [email protected] or through a secure form. We will work with the shipping carrier to locate the package and resolve the issue.

Damaged Packages

If a package is damaged during shipping, please take photos of the damaged package and contact us immediately at [email protected] or through a secure form. We will work with the shipping carrier to file a claim and send a replacement product.

Returns and Exchanges

For information on our return and exchange policy, please visit Return & Exchange Policy.

If you have any questions or concerns about our shipping policy, don’t hesitate to get in touch with us at [email protected] or through a secure form. We are happy to assist you.

How are we different?

Kefir Lab Other Kefirs Probiotic Pills
CFU 100 Trillion 1-50 Billion 1-50 Billion
Price per 1 Trillion CFU $0.04 $1,000 $12,000
Probiotic Origin Naturally Extracted GMO Lab Created GMO Lab Created
Doctor-developed
Third-party Tested Sometimes Sometimes
Regular Lab Testing Sometimes Sometimes
Strain Variety 21 2-12 1-12
A2/A2 Milk N/A
Regenerative Organic N/A
Gluten-Free
No Added Sugar
Preservative-Free
Certified Organic Some
Enzymes Inactive
Bioavailable
Yeast Content None Present None
Supports Digestion
Supports Brain Health
Supports Immune System
Contains Postbiotics Sometimes
Environmental Impact Eco-friendly Varies Varies
Ingredients + Flavours Real Artificial Artificial
Probiotic strains – the power behind our kefir.
Streptococcus Thermophilus

Helps enhance digestion and strengthens the immune system, known for reducing lactose intolerance symptoms. Additionally, it aids in breaking down food, absorbing nutrients, and fighting off ‘bad’ organisms that might cause diseases.

Lactobacillus Delbrueckii ssp. Bulgaricus

Aids in digestion and enhances overall immune function, frequently used to restore gut flora balance after antibiotic use. Additionally, it may be helpful in treating ulcerative colitis and has shown promise in managing other forms of IBD, including Crohn’s disease.

Lactobacillus Casei BGP93

Promotes a healthy digestive system and supports immune health. This strain can help inhibit harmful bacterial growth in the intestines, while also contributing to skin health. Additionally, it plays a crucial role in balancing the gut microbiota, improving gastrointestinal dysfunction, preventing infection and cancer, and modulating inflammatory and immune responses.

Lactobacillus Acidophilus NCFM

Known for its ability to improve gut health, immune system, and enhance lactose digestion, this strain also helps in reducing cholesterol levels, thus lowering the risk of cardiovascular disease. Additionally,  it can help treat bacterial vaginosis.

Bifidobacterium Lactis BB12

Improves bowel function and has a protective effect against inflammation, helping maintain a healthy digestive system. Additionally, it provides benefits for daily sleep, respiratory health, and skin health.

Lactococcus Lactis ssp. Cremoris

This strain is beneficial for improving nutrient absorption, enhancing the immune system, and strengthening the gut lining, thus promoting overall intestinal health. Additionally, it helps protect against colitis and increases intestinal health by preventing gut lining damage.

Lactococcus Lactis ssp. Lactis
Helps improve digestion and supports the immune system. It is also involved in the synthesis of B vitamins which are vital for energy production.
Lactococcus Lactis ssp. Lactis Bv Diacetylactis

Important for supporting gut health and boosting the immune system, contributing to overall intestinal health.

Lactobacillus Delbrueckii ssp. Lactis

Helps improve digestion and supports the immune system. It is also involved in the synthesis of B vitamins, and Riboflavin, which helps fight free radicals and may reduce or help prevent some of the damage they cause.

Leuconostoc Mesenteroides subsp. Cremoris

Supports the immune system and helps in the digestion of complex carbohydrates, while also assisting in the repair of liver damage and inhibiting the growth of pathogens.

Bifidobacterium Bifidum

Known for restoring intestinal balance and aiding in the digestion process. It also plays a role in enhancing the immune system. Certain species may help improve symptoms of IBS, including bloating, cramps, and abdominal pain.

Lactobacillus Paracasei

Enhances digestion and immune function, and may help reduce allergic reactions. It’s also good for managing lactose intolerance. Additionally, it helps with stool frequency and consistency, and shows some positive effects on IBS symptoms

Lactobacillus Rhamnosus LGG

It helps keep your gut bacteria balanced and can prevent or treat many stomach infections. It also helps restore your gut’s natural balance, reducing severe diarrhea from stomach bugs. Plus, it might calm colic in babies and diarrhea. It can even treat gum disease, which damages teeth and gums.

Lactobacillus Rhamnosus GG

Effective in reducing the duration of diarrhea and supporting gut health. It is also known for its potential in alleviating symptoms of IBS, while additionally helping maintain a healthy oral microbiome and preventing teeth decay. Moreover, it aids in vaginal health by increasing microbiota and reducing inflammation.

Lactobacillus Rhamnosus SP1

Enhances the skin’s barrier function, supports immune health, and can be beneficial in preventing eczema, while also promoting dental health by increasing benefits in the oral microbiome.

Lactobacillus Acidophilus LA1

Supports gut health by keeping the intestines balanced and preventing harmful bacteria from causing issues. It also helps strengthen the immune system, regulates intestinal flora balance, boosts immunity, and may have age-delaying, anti-cancer, and cholesterol-reducing effects.

 

Bifidobacterium Infantis

Helps alleviate IBS symptoms and supports a healthy digestive system by reducing inflammation in the gut lining. It also contributes to lower levels of inflammation in patients with ulcerative colitis, chronic fatigue syndrome, and psoriasis.

Bifidobacterium Lactis NH019
Promotes better digestion, improves immune function, and may help in managing symptoms of lactose intolerance.
Lactobacillus Casei

It supports gut health by maintaining a balanced microbiota, aids in digestion, and boosts the immune system. Additionally, it may alleviate symptoms of lactose intolerance, prevent urinary tract infections, and contribute to overall well-being

Lactobacillus Fermentum

Known for its antioxidant properties, this strain helps in combating harmful bacteria and may reduce cholesterol levels. It might also help stop alcoholic liver disease and colorectal cancer in people.

Lactobacillus Plantarum LB931

Benefits the gut microbiome by providing anti-inflammatory properties and supporting the walls of the intestines, particularly beneficial for individuals suffering from IBS and SIBO. Additionally, it helps maintain overall intestinal health.

What are strains?

Loved by doctors & experts, pro athletes,
biohackers, and health enthusiasts.

4.9 / 5 (2500+)

Dino

Kefir lab products have been a staple in my everyday routine and diet. It supports me in my everyday life with digestion and mental clarity. When I’m on the mat and training in Jiujitsu, it helps keep my energy level at an all time high. A healthy gut equals a healthy mind which equals a happy body and life. I strongly recommend Kefir Lab products to implement into your everyday routine.
Brazilian Jiu-Jitsu Athlete

Matthias

A healthy breakfast every morning can be a challenge. Luckily I found Kefir, which is so easy and tasty I almost feel like I am cheating! Every morning I include Kefir with berries and oats for a fresh and tasty breakfast. That way I feel energetic and ready to go, no matter what the day throws at me!
Nature Enthusiast

Alessio and Dalila

We discovered Kefir Lab in 2019 in San Francisco, and since then we never left it! Kefir is our best way to start the day, it makes us feel stronger and healthier. It taste delicious and it is really enjoyable to drink. I recommend everybody to try. It will offer a wide range of benefits boosting your energy, productivity and mood during the day!
Entrepreneurs

Roxana

I am so grateful to have Kefir in our family! Ever since I had introduced it to our daily routine, my son had stopped being sick and is immune to the seasonal flu. I noticed that I don’t have anxiety anymore and I am pretty sure it’s because of Kefir. Our family is now happy and healthy and all our friends are now drinking Kefir as well!
Roxana, Mother

Sun

I didn’t know what was Kefir at the first time. After I tried it, I fell in love with it. First of all, it has a superior taste from the natural ingredients. Also, it helped me to live a healthy and happy life. I couldn’t be regular and I was often feeling bad. Now, I achieve my regularity again and never been so happy. I hope other people can have the same experience as me.
Entrepreneur

Delara

For some people kefir is a new taste, I was one of them. Only because I knew Kefirlab is 100% organic, hormone free and has many health benefits I tried it. It was one of the most pleasant tastes I’ve ever tried, so smooth and fresh! Heavenly balance of sourness and sweetness. Glad that me and my husband are regular now.
Business Analytics

Lisa David

Best dairy products in US!

Ernest

In U.S it’s hard to find a good quality probiotic Kefir that is actually functional. When I saw these guys from Kefir Lab and their beautiful laboratory I subscribed to the weekly probiotic delivery and I haven’t been sick ever since. Definitely recommend, the best health discovery I made so far!

Inkar

It’s impossible to find good kefir in north america that’s both healthy and tasty. Kefirlab is a taste of home, but better. I love that the flavours are subtle and “modern”, not full of sugar and artificial flavours. It’s great for breakfast and a mid-day snack.
Digital Marketer

Bulat

The best kefir I’ve ever tried. It’s even better than back in Russia. I never liked flavoured kefir because of the weird sugary taste, but kefir lab changed it. Cacao and vanilla are now my favourite- smooth, slightly tangy with notes of the flavour and little particles of organic cacao/vanilla.
Entrepreneur

Dex Fx

You are best!

Alix

Deliciously tart and cacao-y. Bought a pack after I had COVID — which apparently severely affects your gut health — and I bounced pack pretty quickly.

Leila

“A taste of home” – Being from Russia I know how to appreciate good dairy products. Unfortunately in the US it’s very difficult to find not only good quality but great tasting kefir. But Kefir Lab is life-changing 100%!! Super healthy and delicious. Plus the founders are a couple of the best people I ever met! You won’t regret trying their products or doing business with them 💖
Marketing Associate

Liza

I’ve been living in SF for two years now and this brand is the closest thing to what I usually get back home. Dates & Cocoa is my all time fav!
Data Scientist

Dmitry

Great products, suitable for all family members. Charitable effect on the digestion process, and is also well suited for dietary nutrition. Recommend ! (Translated by Google)

Sarah Thompson

The kefir from KefirLab has significantly improved my digestion and overall well-being. I’ve been drinking it daily for the past few months and have noticed a remarkable difference in my energy levels and skin health. It’s become an essential part of my diet, and I highly recommend it to anyone looking to enhance their gut health.

Michael Brown

Great taste, love it! It has become a part of my morning routine.

Emily Davis

This kefir is my go-to for a healthy start to my day. It keeps me feeling full and energized throughout the morning.

David Johnson

I was skeptical at first, but after trying KefirLab’s kefir, I’m hooked. My digestion has improved, and I feel more balanced.

Jessica Lee

KefirLab’s kefir is fantastic. I’ve noticed a significant improvement in my gut health since I started drinking it regularly. It’s also delicious, which is a huge plus. Highly recommended!

Daniel Martinez

Not bad, pretty good. It’s a solid addition to my diet.

Askar

The best kefir I’ve had. Its tasty and has lots of probiotics. The consistency is perfect. The bottle size is just right, i can bring it with me anywhere (other kefirs come in huge bottles). Love the packaging 😉

John Smith

Absolutely love this kefir. It’s smooth, tasty, and makes me feel great. I have it every morning with my breakfast and it’s a perfect way to start the day.

Anna Kim

Good product, definitely worth trying.

Alexandra Garcia

KefirLab has nailed it with this kefir. I’ve tried many brands, but this one stands out for its quality and taste. My digestive system has never been happier. A must-try for anyone into gut health!

Brian Williams

It’s good, but I was expecting more.

Robert Miller

Enjoyed it. 👍 It’s a staple in my fridge now.

Maria Rodriguez

KefirLab’s kefir has been a game changer for me. I feel more energetic and my stomach issues have drastically reduced. It’s also quite delicious, which is a pleasant surprise. I can’t recommend it enough.

Matthew Wilson

This is the best kefir I’ve ever had. It tastes great and has really helped with my digestion. I’m so glad I found this product.

Laura Hernandez

Superb kefir, makes me feel fantastic every day. My gut health has improved, and I love the taste. Highly recommended!
    4.9/5

    Plain Kefir