Price: $59.99
(as of Dec 07, 2025 10:41:18 UTC – Details)

From the brand

Welcome to Formulation Factory—where mediocrity ends and excellence begins.

As 2025’s boldest supplement brand, we craft stacked formulas for alpha men & women who refuse to settle. Unapologetic and scientifically perfected, our products fuel your body and mind to conquer any challenge.

Join a community of relentless achievers—men and women who redefine limits and demand transparency in every capsule. Greatness isn’t given; it’s forged.

How did we get our start?

After a near-death accident left our founder battling PTSD and depression, he created life-changing supplements on his countertop. Word-of-mouth success then sparked our birth.

What makes our products unique?

Cutting-edge tech + expertise = transformative, science-backed botanical supplements. Leveraging 2025’s innovation for life-changing results.

What problem are we solving?

Many brands hide behind misleading proprietary blends, but we prioritize transparency, crafting science-backed, family-trusted products built for US—because you deserve to know what you’re taking.

bioavailable nutrients, natural performance, bioactive compounds, herbal support

not welcome

welcome to the family

subscribe and save, consistency, energy, focus, sleep, drive

Launched April 2024

Launched October 2024

Launched January 2025

Launched March 2025

Launched May 2025

Package Dimensions ‏ : ‎ 3.11 x 2.68 x 2.6 inches; 4.66 ounces
Item model number ‏ : ‎ HOS1
Date First Available ‏ : ‎ October 16, 2024
Manufacturer ‏ : ‎ Formulation Factory
ASIN ‏ : ‎ B0DK61GRD2
Best Sellers Rank: #19,585 in Health & Household (See Top 100 in Health & Household) #41 in Sports Nutrition Nitric Oxide Boosters
Customer Reviews: 4.6 4.6 out of 5 stars (671) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

THE TIN MAN PROBLEM – Strong outside, hollow inside. Energy collapsed. Drive vanished. Like the Tin Man, many men and women today feel the weight of stress and burnout.
THE TURNING POINT – The answer wasn’t more caffeine or quick fixes. It was restoring blood flow, nitric oxide, and cellular energy — the true spark of vitality.
10-IN-1 METABOLIC MAXIMIZER – L-Citrulline, L-Arginine, CoQ10, Resveratrol, Ginseng, Ginkgo Biloba, Rhodiola, Quercetin, Forskolin, Capsaicin. A powerhouse blend for circulation and stamina.
TRUSTED RESULTS – From the gym to daily life, thousands of men and women rely on HEART OF STEEL to push past fatigue and reclaim their edge. Third-party tested. Transparent label.
PURE QUALITY – Manufactured in an FDA-registered, GMP-certified USA facility. No proprietary blends. No fluff. Just premium ingredients in every capsule.
CONSISTENCY MATTERS – Supplements work gradually. For best results, take daily as directed. Most people begin to notice benefits with consistent use over 3–4 weeks.
YOUR SATISFACTION MATTERS – We back every bottle. Questions or concerns? Reach out through Amazon messages — our team is here to help.

Customers say

Customers report significant improvements in energy and stamina, with one noting more consistent energy throughout the day. The supplement helps with blood flow during workouts and provides a natural boost without jitters. Customers appreciate the high-quality ingredients, with one highlighting the clinically-backed combination, and find it effective as a pre-workout supplement. They value the product’s focus-enhancing effects and consider it worth the price.