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Organic Kale Powder
Also known as: Kale Leaf Powder, Brassica oleracea, Kale Extract Powder, Dried Kale Powder
Kale powder is a concentrated whole-food form of kale leaves, a cruciferous vegetable rich in vitamins K, C, A, and bioactive compounds like sulforaphane and lutein. While kale itself is nutrient-dense, evidence for specific health claims from supplemental powder forms is limited compared to whole-food consumption.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Organic Kale Powder product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Thorne Broccoli Seed Extract | 89 A | $1.12 |
| 2 | Complement Sulfora | 81 A- | $2.13 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Organic Kale Powder should I take?
The typical range is 1-2 teaspoons (3-6 grams) daily. Safe for long-term daily use as a food supplement
When should I take Organic Kale Powder?
Any time of day; commonly added to smoothies or beverages. Best absorbed with foods containing fat (e.g., smoothie with nut butter or coconut oil).
Which form of Organic Kale Powder is best?
Powder.
Is Organic Kale Powder safe?
Commonly reported: Generally well-tolerated, Possible mild digestive discomfort if taken in large quantities.
Which Organic Kale Powder supplement scores highest?
Thorne Broccoli Seed Extract, at 89/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Nutritional supplementation
- Antioxidant support
- General wellness
How it works
- Provides glucosinolates (precursors to sulforaphane)
- Contains lutein and zeaxanthin (carotenoids)
- Supplies vitamin K for bone and clotting factors
- Delivers polyphenols with antioxidant properties
Dosage
- Typical range
- 1-2 teaspoons (3-6 grams) daily
- Timing
- Any time of day; commonly added to smoothies or beverages
- With food
- Best absorbed with foods containing fat (e.g., smoothie with nut butter or coconut oil)
- Duration
- Safe for long-term daily use as a food supplement
- Special populations
- Those taking warfarin or other anticoagulants should maintain consistent vitamin K intake and consult healthcare provider
Forms
- Powder· 70/100
Safety
Common side effects
- Generally well-tolerated
- Possible mild digestive discomfort if taken in large quantities
Contraindications
- Individuals on warfarin should monitor vitamin K consistency (kale is high in vitamin K)
- Thyroid conditions: raw or high-dose cruciferous vegetables may contain goitrogens; cooking/powdering reduces this risk
Products containing Organic Kale Powder
Top-scoring supplements in our catalog that list Organic Kale Powder on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Kale as a whole food is well-documented as nutrient-dense; however, evidence for supplemental powder forms is moderate and largely extrapolated from whole-food studies. Bioavailability and efficacy of dried/powdered forms requires more human research.
Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.