Irwin Naturals Steel-Libido Peak Testosterone Review
Steel-Libido Peak Testosterone is a powerful 2-in-1 formula designed to support sexual vitality and provide a peak-performance testosterone boost for men of all ages. The formula combines traditional botanicals and targeted nutrients to boost physical performance and pleasure. It also features KSM-66, a highly concentrated Ashwagandha extract, which research suggests can help boost testosterone levels already within a normal range. Studies also demonstrate a wide range of health benefits attributed to this form of Ashwagandha, including its ability to support overall wellbeing, a healthy stress response, and physical performance. Use this product daily to help maintain an active sex life, or occasionally as needed to help maximize potential. The product contains herbs traditionally known for aphrodisiac properties, including Epimedium and Muira Puama. It also incorporates the superfood Maca, a root that has been used by the native people of Peru as an energizing vegetable and as a traditional supplement to support sexual function in males. The formula also provides Tribulus and Fenugreek, botanicals that may support healthy testosterone levels. Tribulus may stimulate luteinizing hormone to signal testosterone production. Beta-sitosterols are described as acting like 5-alpha-reductase inhibitors, which halt the conversion of testosterone to DHT. Ginseng is included for its adaptogenic properties, and Cayenne may support blood circulation, crucial for a healthy sexual response. BioPerine, a concentrated black pepper extract, is included to enhance the bioavailability of many ingredients. The page describes the soft gels as a liquid delivery form that is easy to swallow and combines oils such as flaxseed oil and MCT oil. Directions say to take four liquid soft-gels per day in divided doses with meals and a full glass of water, or four one hour before activity, with no more than four in one day. The container holds 18 servings of four soft-gels.
Study, Trial or Testing Result SummaryMembersHuman studies
Review Totals and SummaryMembers317 reviews
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More DetailsMembersBody systems · Combine with · Possible side effects
Supplement FactsTotal Carbohydrates 2 g · Medium Chain Triglyceride Oil 2100 mg · KSM-66® Ashwagandha Extract 675 mg
| Calories | 40 | |
| Total Fat | 2.5 g | 3% |
| Saturated Fat | 2 g | 10% |
| Total Carbohydrates | 2 g | <1% |
| Protein | 2 g | |
| Medium Chain Triglyceride (MCT) Oil | 2,100 mg | † |
| KSM-66® Ashwagandha Extract (5% withanolides) (root) | 675 mg | † |
| Tribulus Extract (Fruit) | 300 mg | † |
| Maca Powder (Root) | 240 mg | † |
| Fenugreek Extract (4:1) (Seed) | 200 mg | † |
| Beta Sitosterols 40% | 150 mg | † |
| Horny Goat Weed (Epimedium sagittatum) Extract (10% icariins) (Leaf‚ Stem) | 150 mg | † |
| Muira Puama Extract (4:1) (Bark) | 100 mg | † |
| Asian Ginseng Extract (4% ginsenosides) (Root) | 80 mg | † |
| Cayenne powder (30,000 HU) (fruit) | 60 mg | † |
| BioPerine Complex [BioPerine Black Pepper extract (95% piperine) (fruit), Ginger extract (5% gingerols) (rhizome)] | 6 mg | † |
Other ingredients: Gelatin, purified water, glycerin, beeswax, soy lecithin, caramel (color), annatto (color), St. John's bread (carob)(color), silicon dioxide, titanium dioxide (color) and maltodextrin. Contains: Dairy, soy, tree nuts (coconut, palm kernel).
Directions: (Adult) For daily maintenance, take four (4) liquid Soft-Gels per day in divided doses, with meals and a full glass (8 oz) of water. For a more immediate response prior to intimacy, take four (4) Liquid Soft-Gels one hour before activity. Do not take more than four (4) Liquid Soft-Gels in one day.
Barcode (UPC) 710363586003 · Label source: Pureformulas · Report a label change
Where to BuyIrwin Naturals · Walmart · CVS
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Graded October 24, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.

