Blackstone Labs | BSL Extreme Cut | 60 TabletsBlackstone Labs
- SuppVault Score
- 95/100
- Per serving
- $1.67

Blackstone Labs
Transparent cutting support with 100mg epiandrosterone per tablet
$99.95 $129.95$1.66/servingGet Notified When Back in Stock
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Advanced hormonal support for serious cutting phases. Fully disclosed with 100mg epiandrosterone, plus supportive cutting actives for a harder, drier physique look over time.
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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A specialized hormone-support product is best paired with a dedicated support formula rather than run alone. This is the most logical same-brand complement for users who want a more complete cycle-support foundation.
Take daily alongside this product, spaced with meals if preferred
Extreme Cut targets the hormonal and physique side of a cut, but it does not directly cover ATP regeneration or cellular performance. Daily creatine helps maintain strength output and training quality while dieting.
Take daily, anytime, independent of this product
This product does not provide acute workout energy or focus, so pairing it with a separate pre-workout creates a cleaner division of labor. One product handles training intensity, the other handles cutting-phase hormonal support.
Take pre-workout separately; take this product once daily as directed
Users running specialized hormone-support categories often plan recovery support ahead of time rather than scrambling later. This is a logical same-brand option for users building a more complete protocol.
Use after your planned run, not concurrently unless your protocol specifically calls for it
Chosen1 may appeal more for lean-mass positioning, while Extreme Cut is more directly cutting-oriented.
Extreme Cut wins on clean three-active focus and easy-to-understand positioning for cutting support.
For broad daily support and safer category accessibility, Gear Support is the better-rounded choice.
These products serve different phases, so the better choice depends on whether you need active-cycle support or post-cycle planning.
Side-by-side against the closest competitors. Score reflects clinical dosing, transparency, and testing.
Blackstone Labs | BSL Extreme Cut | 60 TabletsBlackstone Labs
Blackstone Labs | BSL Chosen1Blackstone Labs
Chosen1 may appeal more for lean-mass positioning, while Extreme Cut is more directly cutting-oriented.
Compare side-by-side →
Blackstone Labs | BSL SuperStrol-7 | 60 TabletsBlackstone Labs
Extreme Cut wins on clean three-active focus and easy-to-understand positioning for cutting support.
Compare side-by-side →
Blackstone Labs | BS Labs Gear Support | 45 CapsulesBlackstone Labs
For broad daily support and safer category accessibility, Gear Support is the better-rounded choice.
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 Extreme Cut is a compact, fully disclosed hormone-support formula built around three actives commonly positioned for cutting, hardness, and body-composition refinement rather than stimulant energy or pump. The formulation strategy is straightforward: pair an androgen-oriented precursor with a DHEA metabolite associated with non-stimulant cutting support, then layer in a plant-steroidal spirostan compound to round out the physique-oriented effect profile. This is not a general wellness testosterone booster and it is not a fat burner in the classic caffeine-heavy sense. It is a targeted hormonal-support formula designed for experienced users pursuing a harder, leaner look.
The anchor ingredient here is Epiandrosterone at 100mg. Mechanistically, epiandrosterone is a naturally occurring DHEA metabolite and a precursor to dihydrotestosterone, or DHT, while bypassing the testosterone pathway. That matters because the category appeal of epiandrosterone is its association with a drier, less estrogenic profile than compounds that rely more directly on testosterone conversion. The knowledge base dose range for epiandrosterone is 100-400mg, so this formula lands at the very bottom of the clinically relevant category range rather than overshooting it. Research in humans is limited, and that honesty matters: the biochemical conversion pathways are well established, but robust randomized performance trials are not. In practice, 100mg is a meaningful entry dose for users seeking a mild but purposeful androgen-support role, not an aggressively dosed standalone heavy hitter.
7-Hydroxy DHEA is included at 25mg. This DHEA metabolite is typically used in cutting-oriented hormonal formulas because it is associated with thermogenic and body-composition support without functioning like a stimulant. Customers generally do not "feel" 7-Hydroxy DHEA the way they feel caffeine. Its role is quieter: supporting the metabolic side of a cut while complementing the harder, dryer positioning of epiandrosterone. At 25mg, the dose is in line with what is commonly seen in this niche category.
The third active, listed as (25R)-5alpha-spirostan-2alpha, 3beta, 5alpha-triol-6-OH at 50mg, is a spirostan derivative used in physique formulas for its anabolic-support and recomposition-oriented positioning. Human evidence here is limited and category data are much weaker than for mainstream sports nutrition ingredients like creatine or citrulline. That said, in the context of this formula it functions as the non-androgenic counterpart to epiandrosterone: one ingredient pushes the formula toward hardness and androgenic support, while this one broadens the body-composition story.
Synergy is the real point of Extreme Cut. Epiandrosterone provides the androgen-oriented backbone. 7-Hydroxy DHEA supports the cut from the metabolic side. The spirostan derivative fills the gap between those two by reinforcing the physique-recomposition angle. Together, they create a formula aimed less at scale weight and more at mirror changes: tighter look, drier appearance, and support for maintaining a stronger training feel during a cut.
Transparency is a genuine strength here. There is no proprietary blend, every active is disclosed with an exact dose, and that is a major advantage in a category where buyers should demand label clarity. What to expect: day 1 is usually subtle. This is not a product with a dramatic acute sensation. Over 2-4 weeks, experienced users are more likely to evaluate it by changes in training aggression, hardness, dryness, and overall cut quality rather than immediate perceptible effects.
Epiandrosterone is a naturally occurring metabolite of DHEA and is biochemically relevant because it can serve as a precursor to dihydrotestosterone while bypassing the direct testosterone pathway. That distinction is one reason it is frequently positioned for a drier, less estrogenic physique-support profile in cutting formulas. The knowledge base also notes interactions with glucose-6-phosphate 1-dehydrogenase and L-type calcium channels, though its practical category use is driven more by steroidogenic pathway logic than robust human performance trials.
7-Hydroxy DHEA is a DHEA metabolite commonly selected for non-stimulant cutting support. Unlike caffeine-based thermogenics, its purpose is not to create an acute nervous-system effect but to contribute to the metabolic side of body-composition support. In stacked formulations, it often serves as the quieter metabolic counterpart to more androgen-oriented ingredients.
Specialized cutting formulas often combine one androgen-oriented ingredient, one metabolic-support ingredient, and one recomposition-support compound rather than relying on a single pathway. That design aims to support hardness, dryness, and muscle retention simultaneously. Extreme Cut follows that template by combining epiandrosterone, 7-Hydroxy DHEA, and a spirostan derivative in a compact three-active system.
In mainstream categories like creatine, a single active often tells the full story. In hormone-support categories, exact ingredient identity and dose matter far more because small formulation changes can completely alter the product's intent and user fit. A fully disclosed label gives the buyer the ability to compare each ingredient against known category ranges and evidence quality rather than trusting broad marketing claims.
Verified athletes can view NCAA, WADA, and high-school compliance status for this product.
* 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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