core
Rain’s green blend: kale, spirulina, wheatgrass, milk thistle, dandelion and aloe vera in a single serving.
In the US, a box costs $101.82, or $78.32 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 core
Core is Rain’s green product: a blend of seeds and herbs in liquid form, intended as a supplement on the days when less green ends up on the plate than you had planned. Each serving contains 2000 mg of seed blend and 1855 mg of herb blend, just under four grams of plant material.
The ingredients include black cumin seeds, cranberry seeds, kale, spirulina, wheatgrass, milk thistle, dandelion and aloe vera. Core is soy free and GMO free, but it may contain traces of gluten from the wheatgrass. One package holds 30 servings of 30 ml.
Price at Rain in the United States$101.82 one time purchase$78.32 with a subscriptionCanada: C$132.37 one time, C$101.82 with a subscriptionUnited Kingdom: £99.60 one time, £77.04 with a subscriptionPrice from Rain’s official store, for one box. Prices differ by country. Checked 7 October 2026.
Buy core at rainintl.comThe herbs in the blend
The herb blend in core consists of plants with a long tradition in European and Asian herbal use: milk thistle, dandelion, wheatgrass and aloe vera. Milk thistle has been used since antiquity and is the most studied of them, chiefly for its silymarin content. Dandelion is traditionally used as a bitter herb. Long traditional use is not the same thing as an established effect, however, and there is no approved health claim for any of these herbs.
- 2000 mg seed blend and 1855 mg herb blend per serving
- Kale, spirulina and wheatgrass as the green base components
- Milk thistle, dandelion and aloe vera as the herb part
- Liquid form, no mixing and no shaker needed
- Free from soy and GMO, 30 servings per package
From seeds and plants
| Black cumin seeds | Contains thymoquinone, the bioactive compound black cumin is most studied for. |
| Kale | A brassica that naturally contains fiber, sulfur compounds, minerals and vitamin K. |
| Cranberry seeds | High levels of polyunsaturated and monounsaturated fatty acids, phospholipids, phytosterols and high amounts of antioxidants. |
| Spirulina | Blue green algae with a high proportion of plant protein, plus phycocyanin, which gives the algae its blue green color. |
| Milk thistle | Contains silymarin, the compound milk thistle is most studied for. Long traditional use in Europe. |
| Wheatgrass | Young wheat shoots, known for their high chlorophyll content. May contain traces of gluten. |
| Dandelion | Whole herb, traditionally counted among the bitter plants and used in herb blends. |
| Aloe vera | The inner leaf, mild and plant based. |
Nutrition
| Calories | 25 |
| Carbohydrate (of which sugars 3 g) | 5 g |
| Sodium | 45 mg |
| Seed blend | 2000 mg |
| Herb blend | 1855 mg |
Soy free, GMO free, natural ingredients
Directions: Take 1 to 2 servings per day. Do not exceed the recommended daily dose. Store cool.
Other ingredients: purified water, dried sugarcane syrup, organic agave syrup, organic lemon powder, fermented sugar, natural flavors, citric acid, xanthan gum, malic acid, lactic acid and stevia. May contain traces of wheat and gluten.
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
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Read more
If you want to go deeper, start here.
- Rain's eight productsWhat each product contains and who it is made for.
- What Rain products costPrices and what each serving actually costs.
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