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What Is Actually in Steel Power — And What Isn't
Most Steel Power reviews start with the ingredient list on the product website and work from there. That approach has a specific problem: the Steel Power website's ingredient section and its scientific reference list include multiple compounds that do not appear on the verified Supplement Facts panel. Reviewing those ingredients as if they are in the product produces analysis that does not describe what is actually in the capsule.
This deep-dive starts with the verified label. Every claim in this article traces to the Supplement Facts panel as distributed by Steel Power, corroborated by the GlobeNewswire product disclosure published March 28, 2026. Ingredients named on the website but absent from the verified panel — including Tribulus Terrestris, Panax Ginseng, Horny Goat Weed, Saw Palmetto, Hawthorn Berry, Chrysin, and Cissus quadrangularis — are addressed separately below. That transparency is the gap no other Steel Power review fills. For safety and contraindication details, see the Steel Power side effects and safety review.
The Verified Supplement Facts Panel
Serving size: 1 capsule. Servings per container: 30.
Labeled nutrients:
Vitamin B3 (as Niacin) — 20 mg — 125% Daily Value. Zinc (as Zinc Oxide) — 11 mg — 100% Daily Value.
Proprietary Blend — 570 mg total:
L-Citrulline, L-Carnitine, Pine (Pinus pinaster) Bark Extract, Maca (Lepidium meyenii) Root Extract, Grape (Vitis vinifera) Skin Extract, Saffron (Crocus sativus) Stigmas Extract.
Other ingredients: Hypromellose (vegetable capsule), Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide.
That is the complete formula. Eight active ingredients: two labeled nutrients with disclosed doses, six proprietary blend components with a combined but undisclosed individual dose structure. Non-GMO, gluten-free, vegetable capsule. Manufactured and packaged in the United States.
L-Citrulline: The Primary Vascular Ingredient
L-Citrulline is the first and presumably dominant ingredient in the proprietary blend, listed first per standard DSHEA ordering (ingredients listed in descending weight order within a blend). Its role is as a nitric oxide precursor: it converts to L-Arginine in the kidneys, which then serves as the substrate for nitric oxide synthesis via nitric oxide synthase.* This is the core mechanism behind Steel Power's “improved blood circulation” positioning.
Published research on L-Citrulline has examined doses ranging from 3,000 mg to 8,000 mg per day for performance and erectile function outcomes. The 570 mg total blend in Steel Power — shared across six ingredients — means the L-Citrulline dose is substantially below the thresholds used in most clinical trials. This is a structural limitation of the formula's dosing architecture, and it is worth understanding: the ingredient is legitimate and researched, but the proprietary blend format prevents confirming whether it is present at clinically relevant doses.* The appropriate expectation is daily nutritional support for circulation pathways, not pharmaceutical-level intervention.*
L-Carnitine: Energy Metabolism and Secondary Performance Support
L-Carnitine is an amino acid compound involved in the transport of fatty acids into mitochondria for energy production.* Research has explored its potential roles in physical energy, exercise recovery, sperm motility, and as a secondary support for male reproductive health.* The form in Steel Power is L-Carnitine — the standard form, as opposed to Acetyl-L-Carnitine (which has more cognitive research) or L-Carnitine L-Tartrate (which has more exercise recovery research). Research on L-Carnitine for male fertility and physical performance typically uses doses of 1,500 mg to 3,000 mg per day, again above what this blend can reasonably deliver across six ingredients.*
Pine Bark Extract (Pinus pinaster): Antioxidant Vascular Support
Pine bark extract from Pinus pinaster contains oligomeric proanthocyanidins (OPCs) — antioxidant compounds that have been studied for their potential to protect nitric oxide from oxidative degradation, support endothelial function, and reduce oxidative stress on vascular tissue.* Several studies have examined pine bark extract in combination with L-Citrulline or L-Arginine, with some reporting complementary effects on erectile function in men, though most involved small samples and short durations.* The antioxidant mechanism makes it a coherent pairing with L-Citrulline in a circulation-focused formula.*
Maca Root Extract (Lepidium meyenii): Libido and Subjective Vitality Support
Maca root extract has one of the more robust bodies of randomized controlled trial evidence among adaptogens used in male performance formulas. Studies have found statistically significant improvements in self-reported libido and sexual desire in men, with the effect appearing in multiple trials of varying duration.* Its mechanism is not well-characterized but appears distinct from testosterone or estrogen pathways — maca does not contain phytohormones and most studies do not show significant effects on measurable hormone levels.* What it does appear to do — based on available evidence — is support subjective sense of drive and vitality in a way that has held up across multiple trial designs.* This makes it one of the stronger ingredients in the Steel Power formula from an evidence standpoint, even though its specific mechanism is still an active research question.*
Grape Skin Extract (Vitis vinifera): Polyphenol Antioxidant Support
Grape skin extract provides resveratrol and other stilbene polyphenols along with anthocyanins — a range of antioxidant compounds with research on vascular health, endothelial protection, and cardiovascular support.* The rationale for including it in a circulation-focused male performance formula is coherent: antioxidant support at the vascular level theoretically helps protect the endothelial function that nitric oxide depends on.* Individual ingredient research is well-established; its contribution at the doses likely present in this blend is supportive rather than primary.*
Saffron Extract (Crocus sativus): Mood and Subjective Satisfaction
Saffron stigma extract has a growing body of clinical research on mood support, antidepressant-adjacent effects, and — specifically relevant here — subjective sexual function and satisfaction.* Several studies have found saffron supplementation associated with improvements in self-reported sexual desire and satisfaction in both men and women, with proposed mechanisms involving serotonin and dopamine pathway modulation.* The dose present in this blend is undisclosed and likely modest given the shared 570 mg total, but even smaller amounts of saffron extract have produced measurable effects in some studies.* This is arguably one of the more interesting and less commonly understood inclusions in the Steel Power formula.*
Vitamin B3 (Niacin): Energy Metabolism Cofactor
At 20 mg — 125% of the daily value — Niacin in Steel Power is a nutritional supplement dose rather than a therapeutic dose. Niacin participates in NAD+ biosynthesis, which is central to cellular energy metabolism.* At doses of 100 mg and above, niacin produces vasodilatory effects (niacin flush). At 20 mg, this effect is not expected and the ingredient functions as a metabolic cofactor.* Its inclusion is more nutritional completeness than primary mechanism.*
Zinc (Zinc Oxide): Testosterone Pathway Support at Nutritional Dose
Zinc at 11 mg — 100% of the daily value — provides a foundational nutritional role. Zinc is an essential mineral required for testosterone biosynthesis, sperm production, and immune function.* Research documents that zinc deficiency is associated with reduced testosterone levels, and supplementation in zinc-deficient men has produced measurable effects on testosterone markers.* In men who are not zinc-deficient, supplementation shows less consistent effects on testosterone.* At the dietary value dose, this ingredient is providing nutritional completeness for men who may not reach daily zinc requirements through diet alone.*
The Marketing vs. Label Discrepancy: What Is Not in the Formula
The Steel Power website's ingredient section describes and depicts: Tribulus Terrestris, Panax Ginseng, and the benefits associated with each. The scientific reference list on the official site includes citations for: Tribulus Terrestris (references 5 and 6), Chrysin (reference 7), Saw Palmetto (references 10 and 11), Hawthorn (references 12 and 13), Cissus quadrangularis (reference 14), and Horny Goat Weed/Icariin (reference 9). None of these ingredients appear on the verified Supplement Facts panel.
The GlobeNewswire disclosure (March 28, 2026) independently confirmed this discrepancy, noting that “several scientific references on the website cite research on compounds not present in the current product formula.” This is worth knowing because any analysis of Steel Power's effectiveness that incorporates research on Tribulus, Ginseng, or the other absent ingredients is describing a different formula than what is in the capsule. This site writes to what is on the label. The actual formula — L-Citrulline, L-Carnitine, Pine Bark Extract, Maca, Grape Skin Extract, Saffron, Zinc, and Niacin — is a coherent, DSHEA-compliant male vitality support formula with legitimate individual ingredient research support.* It is simply a different formula than the marketing copy implies.*
Our Take on the Formula
The verified Steel Power formula is a reasonable, stimulant-free, once-daily male vitality supplement built around a nitric oxide precursor and antioxidant vascular support stack, complemented by Maca for libido support and Saffron for mood and subjective satisfaction.* The proprietary blend structure limits dose transparency, which is an industry-wide limitation rather than a Steel Power-specific one.* The label-vs.-marketing discrepancy is worth knowing, but it describes a gap between what is claimed and what is labeled rather than an unsafe or ineffective product.* Men who approach it as daily nutritional support for the biological mechanisms associated with male performance — not as a pharmaceutical alternative — are working with accurate expectations.* For a full assessment including pricing, guarantee structure, and who it is and isn't right for, see the complete Steel Power review. For how this formula compares to competitors ingredient by ingredient, see the Steel Power vs. VigRX Plus vs. ExtenZe comparison.
Frequently Asked Questions
What ingredients are in Steel Power?
The verified Steel Power Supplement Facts panel contains: Vitamin B3 (as Niacin) at 20 mg, Zinc (as Zinc Oxide) at 11 mg, and a 570 mg proprietary blend of L-Citrulline, L-Carnitine, Pine Bark Extract (Pinus pinaster), Maca Root Extract (Lepidium meyenii), Grape Skin Extract (Vitis vinifera), and Saffron Stigmas Extract (Crocus sativus).*
Does Steel Power contain Tribulus Terrestris or Panax Ginseng?
No. The verified Supplement Facts panel does not include Tribulus Terrestris, Panax Ginseng, Horny Goat Weed, Saw Palmetto, or Hawthorn Berry. These ingredients are referenced in Steel Power's website marketing copy and scientific citation list, but they are not present on the verified product label. All editorial analysis on this site is written to the verified panel only.
What does the 570 mg proprietary blend in Steel Power mean?
The proprietary blend discloses the six ingredient names and the total blend weight (570 mg) but does not disclose individual amounts for each ingredient. This is a standard and legal labeling practice under DSHEA. It means the exact per-ingredient doses cannot be confirmed from the label alone, which is a relevant consideration when evaluating how closely the formula aligns with the clinical research doses studied for individual ingredients.*
* 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.