Kefir reviews from people in your shoes
In short
People order kefir grains for all sorts of reasons. Some are total beginners afraid of getting it wrong; some are families wanting a daily breakfast staple; some are particular about quality; some want to try everything; and some simply expect decent service. This page sorts genuine reviews by those profiles and adds our pick for each. Natural Probio has more than 20,000 customers around the globe and a 4.8 out of 5 rating from Trustpilot reviewers.
A review hits home when the person writing it sounds like you. So rather than one long list, we have grouped genuine reviews, posted on Trustpilot or on our product pages, by the situation their authors were in. Reviews first written in another language have been translated and are marked; shortened ones show […].
You've never done this before
That was true of most of our customers when they placed their first order. The usual fear is not knowing what to do. A few days in, the usual verdict is that it was far easier than expected, thanks to the leaflet and the guide.
“A few days into making milk kefir, we've found our rhythm and it turns out spot on […]. The instructions are clear […].”
Alex C., September 2026Trustpilot review, translated from Spanish“[…] the included booklet is an amazing guide if you're a beginner like me!”
Elisa, June 2026Trustpilot reviewOur pick: the 10 g pouch of milk kefir grains for a gentle start, plus the beginner's guide so you know what each day brings.
You're feeding a household
Families tell us kefir quickly becomes part of breakfast, and that having two kinds on the go keeps everybody happy.
“Thrilled with my milk and water kefir set, and whatever you ask, they're delighted to help. I'd recommend it to anyone.”
Irene M., July 2026Trustpilot review, translated from Spanish“Really good stuff. I'm already setting up my third kefir and I have some every day.”
Matthias L., August 2024Trustpilot review, translated from GermanOur pick: the 20 g pouch for roughly a litre a day, or the milk and water kefir duo to add something fizzy for later in the day.
You're particular about quality
Some customers have made kefir before and know what good, lively grains look like. What strikes them is how quickly ours set to work.
“Shipping and product quality alike: fantastic! My milk kefir grains are incredibly lively […]. Thoroughly recommend.”
Montse AJ, October 2026Trustpilot review, translated from Spanish“Good product, it does just what it's meant to.”
Ronald K., October 2026Trustpilot review, translated from GermanOur pick: the 20 g pouch of milk kefir grains, and a read of what we commit to, culture by culture.
You want to try the lot
Some customers start with one culture and come back for another a few weeks later. Others order several at once and compare.
“I ordered kombucha SCOBY and water kefir grains […]. Both grains and SCOBY are producing great drinks.”
Juliette M., June 2026Trustpilot review“Great brand”
Michail P., July 2026Trustpilot reviewOur pick: the complete kit: milk kefir, water kefir and kombucha, for less than buying them separately.
You expect proper service
A living culture brings questions with it. What reviewers praise most is how fast and how kindly we answer, before and after they order.
“We had a query about getting the kefir going and received an immediate, useful and kind reply.”
Wibke S., October 2025Trustpilot review, translated from German“I had a few teething troubles at the start, but the seller's advice got my kefir grains active again. […] I'm treating myself to the drink I grew up with.”
Jean-Marc, December 2021Review on the water kefir product page, translatedOur promise: a personal reply inside one working day, in English, German, Italian or Spanish, plus a lifetime activity guarantee on your grains. Delivery and guarantee.
You'd like it soon
Once you have decided, you want the grains on your doormat. Parcels are posted within 24 to 48 working hours with tracking, and the checkout shows the expected UK delivery date.
“Fast shipping. The product is superb.”
Elli S., August 2025Trustpilot reviewOur pick: milk kefir grains, with your first kefir the day after you start. See what comes in the box.
About these reviews
Are the reviews genuine?
Yes, every one, from Trustpilot or our product pages. Translations are flagged and their meaning is left untouched.
Where can I read more?
On our reviews page, and on Trustpilot itself, where reviewers rate Natural Probio 4.8 out of 5.
How do I work out which product is mine?
Choosing your kefir runs through the range in a couple of minutes, from the 10 g pouch to the complete kit.
Do what they did
Natural Probio milk kefir grains, posted alive with everything you need to succeed from the first jar.
- Grains that arrive alive and lively
- Complete guide and recipe collection
- Rated 4.8 out of 5 by Trustpilot reviewers
- Your money back if it isn't right
Grains from time-honoured methods, unique and resilientDispatched within 24 to 48 hours, trackedLifetime guarantee on your grains' activityOver 20,000 customers worldwide
