pure

Ten strains of lactic acid bacteria, prebiotic inulin and cold pressed seed oils in the same serving.

In the US, a box costs $68.23, or $52.49 with a monthly subscription.

If you live in Canada, the United Kingdom or Ireland, click your country to order from Rain’s store there.

About pure

Pure is Rain’s product for anyone who wants to add bacterial cultures and fiber to their diet. Each serving contains ten strains of lactic acid bacteria, with Lactobacillus acidophilus the single largest item at 12 billion CFU, plus Bifidobacterium bifidum and Bifidobacterium lactis at 3.5 billion CFU each.

Alongside the bacterial cultures, pure contains inulin, a water soluble dietary fiber extracted from chicory root. Inulin is not broken down in the small intestine but reaches the large intestine largely intact, where gut bacteria can use it. A serving provides 2 grams of dietary fiber. To that come cold pressed oils from pumpkin seeds, watermelon seeds and flaxseed.

Pure is free from soy and gluten and is also available in lemon lime flavor. One package provides 30 servings.

Buy pure at Rain’s official store

Price at Rain in the United States$68.23 one time purchase$52.49 with a subscriptionCanada: C$88.70 one time, C$68.23 with a subscriptionUnited Kingdom: £67.37 one time, £52.25 with a subscriptionPrice from Rain’s official store, for one box. Prices differ by country. Checked 7 October 2026.

Buy pure at rainintl.com

The button above opens this product at the US price, in US dollars. If you live in Canada, the United Kingdom or Ireland, click your country to order from Rain’s store there. Anywhere else, choose your country under the flag at the top of the store before adding anything to the cart. It cannot be changed after that.

About inulin and the fiber in pure

Inulin counts as a prebiotic fiber, meaning it acts as a substrate for the gut’s own bacteria. Rain built pure around the combination of fiber and bacterial cultures in the same serving. It should be said plainly that no health claim has been approved for either lactic acid bacteria or inulin in this form, so we describe what the product contains and leave it to you to judge whether it suits you.

What the research agrees on most is that gut flora responds quickly to what you eat, and that the single most important factor is the amount of fiber from whole foods: vegetables, legumes, whole grains, fruit and nuts. A supplement like pure is a complement to that, not a replacement for it.

Ten strains of lactic acid bacteria in the same serving
L. acidophilus 12 billion CFU, B. bifidum and B. lactis 3.5 billion CFU each
2 grams of dietary fiber per serving, including prebiotic inulin
Cold pressed oils from pumpkin seeds, watermelon seeds and flaxseed
Free from soy and gluten, also available in lemon lime flavor
30 servings per package

From seeds and plants

Bacterial cultures	Ten strains of lactic acid bacteria, among them L. casei, L. plantarum, L. rhamnosus, B. longum and B. breve.
Prebiotic fiber	Fiber that is not broken down in the small intestine but reaches the large intestine, where the gut’s own bacteria can use it.
Inulin	Water soluble dietary fiber extracted from chicory root. Makes up the bulk of the 2 grams of fiber per serving.
Pumpkin seed oil	Cold pressed oil with a high share of omega 6 and a natural content of vitamin E and phytosterols.
Watermelon seed oil	Cold pressed oil from watermelon seeds, with a fatty acid profile dominated by linoleic acid.
Flaxseed oil	One of the richest plant sources of alpha linolenic acid, an omega 3 fatty acid.

Nutrition

1 serving (3 g), 30 servings

Calories	5
Carbohydrate (of which fibre 2 g)	2 g
Sodium	20 mg
L. acidophilus	12 bn CFU
B. bifidum	3.5 bn CFU
B. lactis	3.5 bn CFU
Bacterial blend (L. casei, L. plantarum, L. salivarius, L. acidophilus, L. rhamnosus, S. thermophilus, B. bifidum, B. infantis, B. longum, B. breve)	1 bn CFU

Soy free, gluten free, lemon lime flavor available

Directions: Mix with 240 ml water. Take 1 to 2 servings per day or as needed.

Fiber blend: inulin, flaxseed, pumpkin seeds and watermelon seeds. Other ingredients: citric acid, natural flavors, malic acid, stevia, sodium chloride and natural red color from cherry.

Food supplements are not a substitute for a varied diet and a healthy lifestyle. Do not exceed the recommended daily dose. Keep out of reach of children. The information describes the product’s contents and is not intended to prevent, treat or cure any disease. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Frequently asked questions

What is Rain Pure?

Rain Pure contains ten strains of lactic acid bacteria, prebiotic inulin and cold pressed oils from pumpkin seeds, watermelon seeds and flaxseed. A serving provides 2 grams of dietary fiber.

What is the difference between inulin and the bacterial cultures?

Inulin is a dietary fiber that acts as a substrate for the gut’s own bacteria, while the bacterial cultures are live lactic acid bacteria supplied from outside. Pure contains both in the same serving. No health claim has been approved for either of them, so we describe the contents rather than an effect.

How do you take Pure?

Mix with about 240 ml water and take 1 to 2 servings per day or as needed.

Is Pure soy free and gluten free?

Yes, Pure is both soy free and gluten free.

Where do I buy Rain Pure?

Through Rain’s official store via the link on the page. Choose your country before shopping.

If you want to go deeper, start here.

FibermaxxingHow much fiber you need and where to find it.
Rain's eight productsWhat each product contains and who it is made for.
What Rain products costPrices and what each serving actually costs.