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Organic Spinach Extract (Spinacia oleracea Leaf)
Also known as: Spinach Leaf Extract, Spinacia oleracea Extract, Spinach Powder, Spinach Leaf Powder
Spinach extract is a concentrated source of naturally occurring nutrients including vitamins (K, A, C, folate), minerals (iron, magnesium), and phytonutrients like lutein and oxalates. Limited clinical evidence supports its use as a whole-food concentrate, though individual components have been studied.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Organic Spinach Extract (Spinacia oleracea Leaf) product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Complement Daily Greens by Complement | 80 A- | $1.63 |
| 2 | Thorne Daily Greens Plus | 79 B+ | $0.83 |
| 3 | BioSchwartz Greens Superfood Powder | 77 B+ | $1.00 |
| 4 | MegaFood Magnesium | 73 B+ | $0.33 |
| 5 | MegaFood Magnesium 300 mg Capsules | 72 B | $0.50 |
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 Spinach Extract (Spinacia oleracea Leaf) should I take?
The typical range is 1-3 grams (1,000-3,000 mg) daily. Safe for long-term use as part of daily nutrition
When should I take Organic Spinach Extract (Spinacia oleracea Leaf)?
Any time of day. With food to enhance nutrient absorption and minimize GI upset.
Which form of Organic Spinach Extract (Spinacia oleracea Leaf) is best?
Powder. Other forms in the catalog: Extract concentrate.
Is Organic Spinach Extract (Spinacia oleracea Leaf) safe?
Commonly reported: Minimal at typical doses, Possible mild GI upset if taken on empty stomach, Kidney stone risk if predisposed (high oxalate content).
Which Organic Spinach Extract (Spinacia oleracea Leaf) supplement scores highest?
Complement Daily Greens by Complement, at 80/100. 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 bioavailable phytonutrients (lutein, zeaxanthin, kaempferol)
- Contributes vitamin K for bone and cardiovascular health
- Supplies minerals and cofactors for metabolic function
Dosage
- Typical range
- 1-3 grams (1,000-3,000 mg) daily
- Timing
- Any time of day
- With food
- With food to enhance nutrient absorption and minimize GI upset
- Duration
- Safe for long-term use as part of daily nutrition
- Special populations
- Individuals on warfarin or anticoagulants should maintain consistent vitamin K intake; those with kidney disease should monitor oxalate content
Forms
- Powder· 70/100
- Extract concentrate· 70/100
Safety
Common side effects
- Minimal at typical doses
- Possible mild GI upset if taken on empty stomach
- Kidney stone risk if predisposed (high oxalate content)
Contraindications
- Caution with anticoagulant medications due to vitamin K content
- History of kidney stones or hyperoxaluria
- Thyroid disease (goitrogens in raw spinach, likely reduced in extract)
Products containing Organic Spinach Extract (Spinacia oleracea Leaf)
Top-scoring supplements in our catalog that list Organic Spinach Extract (Spinacia oleracea Leaf) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
While spinach components (vitamin K, lutein, nitrates) have established benefits in isolated studies, evidence for spinach extract as a standalone supplement formulation is limited. Most research supports whole spinach consumption rather than concentrated extracts.
Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.
Related in Other
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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.