Blackstone Labs | BSL CHOSEN 1 | 60 TabletsBlackstone Labs
- SuppVault Score
- 68/100
- Per serving
- $1.08

Blackstone Labs
Triple-form hormonal support built for lean mass and hardness
$64.99 $109.99$1.08/servingScore reflects incomplete data — label not yet scanned. Not a quality judgment.
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Advanced hormonal support formula with a 65mg triple-form complex for lean mass and physique hardness. Built for experienced users who want targeted recomposition support, not stimulant effects.
Blackstone Labs publishes test results from independent third-party labs. Svpplements links to the manufacturer’s data — we don’t test products ourselves.
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Creatine complements CHOSEN 1 extremely well because it improves phosphocreatine availability, helping support strength, power output, and training volume while CHOSEN 1 covers the hormonal side of recomposition. This is one of the cleanest, most non-overlapping stacks you can build.
Take daily, any time, including alongside CHOSEN 1 or post-workout
Hi-Tech generally offers stronger category recognition and often competes well on disclosure and category leadership.
CHOSEN 1 is the more focused choice for users specifically wanting the 1-DHEA lean-support pathway.
These products serve similar advanced buyers but through different hormonal pathways and delivery philosophies.
The full stack wins on completeness because it solves support and post-cycle planning in one purchase.
Side-by-side against the closest competitors. Score reflects clinical dosing, transparency, and testing.
Blackstone Labs | BSL CHOSEN 1 | 60 TabletsBlackstone Labs
Hi-Tech Pharmaceuticals | 1-Testosterone | 60 TabletsHi-Tech Pharmaceuticals
Hi-Tech generally offers stronger category recognition and often competes well on disclosure and category leadership.
Compare side-by-side →
Blackstone Labs | BSL ABNORMAL | 60 TabletsBlackstone Labs
CHOSEN 1 is the more focused choice for users specifically wanting the 1-DHEA lean-support pathway.
Compare side-by-side →These products serve similar advanced buyers but through different hormonal pathways and delivery philosophies.
Compare side-by-side →Comparison data combines live storefront pricing with our SuppVault analysis. Competitor scores reflect public-label data; manufacturer-side changes may not be reflected in real time.
Blackstone Labs CHOSEN 1 is a single-concept hormonal support formula built around a 65mg 1-DHEA blend, delivered through three forms of the same core compound: 1-androstene-3b-ol,17-one, its undecanoate ester, and its caprylate ester. That tells you the formulation philosophy immediately. This is not a broad-spectrum “support” product with tribulus, fenugreek, zinc, and marketing fluff. It is a direct prohormone-style formula designed to feed one androgenic pathway, with the goal of supporting lean mass, training intensity, recomposition, and a harder physique look.
The core active, commonly referred to as 1-DHEA or 1-andro, is understood to convert through a two-step pathway to 1-testosterone. Mechanistically, that matters because 1-testosterone is associated with a dry, non-estrogenic profile compared with compounds that convert more readily toward aromatizing metabolites. In practical terms, users typically pursue this category for support with strength progression, training aggression, muscle hardness, and lean-tissue retention during calorie deficits. The 65mg total blend sits in the lower-to-moderate range of what this category has historically used per daily serving. That means CHOSEN 1 is not presented here as an extreme-dose product. It is better understood as a streamlined, entry-to-mid intensity single-agent approach within the hormonal category.
The inclusion of three forms is the most important formulation decision. The base 1-androstene-3b-ol,17-one is the parent compound. The undecanoate and caprylate forms are fatty acid esters that are typically used to influence absorption kinetics and extend release characteristics. While the label does not disclose how the 65mg is split across the three forms, the intended logic is clear: combine immediate and longer-acting fractions to avoid a flat single-form profile. That is reinforced by the inactive matrix. Phosphatidylcholine supports lipid-phase delivery, while hydroxypropyl-beta-cyclodextrin is often used to improve solubility and handling of lipophilic compounds. Those are not random fillers in this context; they are consistent with a bioavailability strategy.
Synergy here is not about stacking ten unrelated ingredients. It is about using multiple delivery forms of one hormonal substrate to create a more sustained exposure pattern. That can translate into a steadier day-to-day experience rather than a sharp rise and fall. For the right user, the payoff is not a pre-workout sensation but a gradual shift in training output, muscle fullness, and visual hardness over time.
Transparency is where CHOSEN 1 loses points. The total blend is disclosed at 65mg, but the individual amounts of the base, undecanoate, and caprylate forms are hidden inside a proprietary blend. In a category where exact milligram disclosure matters, that limits precise formula analysis. We can assess the concept, but not the exact weighting of fast versus esterified forms.
What should you expect? Day 1 usually feels subtle. This is not caffeine, not nitric oxide, and not something you “feel” 20 minutes later. Over the first 1-2 weeks, experienced users typically look for changes in gym drive, recovery between sessions, and training performance. By weeks 2-4, the more noticeable shifts are usually body-composition related: a drier look, improved muscle hardness, and better retention of lean tissue during a cut or recomp phase. The key is consistency, realistic expectations, and treating this as a true hormonal product rather than a casual add-on.
1-DHEA is used as a precursor in a two-step pathway toward 1-testosterone. That pathway is relevant because 1-testosterone is associated in sports-nutrition use with a drier, more non-estrogenic profile than compounds that aromatize more readily. In practice, this is why 1-andro products are often selected for recomposition and cutting phases rather than soft bulking. The limitation is that modern published human supplementation data is far thinner than the marketing language used around this category.
Undecanoate and caprylate esters are commonly used to alter the lipophilicity and release handling of hormonal compounds. In oral products, that can change how quickly and how steadily a compound is presented for absorption and downstream metabolism. CHOSEN 1 applies this logic by combining the parent form with two esterified variants rather than relying on one plain source. The exact performance of that strategy depends on the hidden split of the blend, which the label does not disclose.
Hydroxypropyl-beta-cyclodextrin is often used to improve the handling of poorly water-soluble compounds by forming inclusion complexes that can improve dispersion characteristics. Phosphatidylcholine adds a lipid-friendly delivery component that aligns well with lipophilic actives. In a tablet like CHOSEN 1, these excipients suggest intentional formulation work around absorption rather than a bare filler system. That does not guarantee superior bioavailability, but it is mechanistically more thoughtful than a standard compressed tablet matrix.
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* 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. Consult your physician before use if you have a medical condition or take medications.
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