Afterdark | AD IsodrolXRAfterdark
- SuppVault Score
- 90/100

Afterdark
Fully disclosed three-compound hormonal formula with 25mg Pro4Plex®
$25.00 $69.99Scored on what's in the tub, not the marketing.
The label is the formula. We score it either way.
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Afterdark IsodrolXR is a niche hormonal support capsule built for physique-focused users, not general wellness. It delivers a fully disclosed three-compound anabolic-style formula designed for cumulative strength, hardness, and body-composition changes. Lead active is dosed at 25mg.
Afterdark 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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The knowledge base specifically notes N-Acetyl Cysteine as a relevant synergy alongside 6-dehydromethyltestosterone. NAC supports glutathione production and is one of the most common support nutrients used when a formula contains a methylated oral compound with known liver-stress concerns.
Take daily with meals, separate timing is acceptable
TUDCA is the other support ingredient specifically named in the knowledge base for 6-dehydromethyltestosterone. In practical stack terms, this is one of the most targeted additions because the lead ingredient’s 17-alpha-methylation creates the most obvious support need in the entire formula profile.
Use daily throughout the run, typically with meals
Creatine complements this formula from a completely different pathway. While IsodrolXR is built around androgen receptor activity and a more anabolic environment, creatine improves phosphocreatine availability for repeated high-intensity effort, giving you a non-hormonal performance base that stacks logically.
3-5g daily, any time of day
A stronger anabolic environment only matters if amino acid availability is there to support training adaptation. Pairing IsodrolXR with a high-quality protein source helps ensure the increased training demand and muscle protein synthesis signaling have the raw material needed to translate into measurable progress.
Post-workout or any time daily to hit protein targets
Because methylated oral anabolic compounds raise cardiovascular concern, a stack that includes omega-3 support is a rational add. It does not neutralize the risk profile, but it fits the bigger-picture support strategy better than adding more aggressive performance ingredients.
With meals daily
IsodrolXR has a more aggressive three-compound disclosed profile for advanced physique goals.
XYO-Test is likely the better fit for users wanting a more conventional hormone-support approach.
They serve different roles, with Estrozole better for support balancing and IsodrolXR better for direct anabolic intent.
SuperStrol-7 has broader category recognition and stronger market familiarity in this niche.
Side-by-side against the closest competitors. Score reflects clinical dosing, transparency, and testing.
Afterdark | AD IsodrolXRAfterdark
IsodrolXR has a more aggressive three-compound disclosed profile for advanced physique goals.
Compare side-by-side →
Afterdark | XYO-Test | 100 CapsulesAfterdark
XYO-Test is likely the better fit for users wanting a more conventional hormone-support approach.
Compare side-by-side →
Afterdark | Estrozole | 90 CapsulesAfterdark
They serve different roles, with Estrozole better for support balancing and IsodrolXR better for direct anabolic intent.
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.
Afterdark IsodrolXR is not a general wellness product and it is not a conventional sports nutrition formula. This is a niche hormonal/anabolic-support style capsule centered on 6-dehydromethyltestosterone at 25mg, with two additional steroidal actives: 3b-Hydroxy-5a-Androstan-17-one at 25mg and 3,6,17-androsta-3,5-dien-7,17-diol at 10mg. The formulation strategy is clear: provide a direct, fully disclosed three-compound stack designed for users seeking a stronger anabolic profile than standard natural testosterone support formulas can offer. That makes transparency especially important here, and Afterdark does disclose the actives and doses rather than hiding them in a proprietary blend.
The lead ingredient is 6-dehydromethyltestosterone, here supplied at 25mg and referenced with the Pro4Plex® naming. Mechanistically, this is an orally active synthetic anabolic-androgenic steroid that binds the androgen receptor inside the cell nucleus, increasing signaling related to muscle protein synthesis and nitrogen retention. The 17-alpha-methyl structure is what gives it oral activity by allowing survival through first-pass liver metabolism, but that same structural feature is also the major reason this class carries substantial hepatotoxic risk. The provided knowledge base places 25mg as the known market-standard dose range, so this is not a token inclusion; it is the full expected amount for this compound. In practical terms, this is the ingredient most associated with the “hardening,” strength, and rapid physique-focused appeal of the formula. The tradeoff is equally important: there are zero approved human clinical trials establishing safety or efficacy, and the evidence base is limited largely to forensic, anti-doping, and chemical analysis literature rather than therapeutic research.
3b-Hydroxy-5a-Androstan-17-one at 25mg adds a second androgen-related input. While the provided data set does not give a robust clinical evidence file for this compound, its placement in a stack like this suggests support for a more pronounced androgenic feel and a broader hormonal profile than a single-agent formula. Users shopping this category are typically looking for exactly that layered effect rather than a standalone ingredient approach.
The third active, 3,6,17-androsta-3,5-dien-7,17-diol at 10mg, rounds out the formula with another steroidal compound intended to alter the overall anabolic-androgenic balance of the stack. Again, the limitation is the same: this category leans heavily on gray-market use patterns and anecdotal bodybuilding history rather than high-quality human outcome trials.
As a system, the formula is designed to push androgen receptor-mediated effects from multiple angles rather than relying on stimulant energy, nitric oxide support, or creatine-style phosphagen support. The “XR” presentation and methyl cellulose coated complex on the lead compound suggest a delivery strategy aimed at controlled release characteristics, though that does not change the underlying pharmacology or risk profile.
From a transparency standpoint, the formula is straightforward: three disclosed actives, no proprietary blend, and clear milligram amounts. That is better than many products in this category, where synonym-heavy labeling often obscures what the user is actually taking. Day 1 expectations are subtle compared with stimulant products; this is not a “feel it in 20 minutes” formula. Over 2 to 4 weeks, users would typically watch for changes in gym performance, muscular fullness, bodyweight trend, and visual hardness. Just as importantly, they should understand that methylated oral anabolic compounds are associated with meaningful liver, lipid, cardiovascular, endocrine, and anti-doping concerns, and this product should be viewed through that reality, not through the lens of ordinary supplements.
The lead compound is positioned as an orally active androgen that interacts with intracellular androgen receptors in skeletal muscle and other tissues. Once receptor binding occurs, the ligand-receptor complex can influence gene transcription related to protein turnover, nitrogen retention, and training adaptation. That mechanistic profile explains why users evaluate the formula through cumulative strength and physique changes rather than acute sensation. Evidence quality is limited and comes largely from forensic, anti-doping, and chemical literature rather than modern therapeutic trials.
A three-compound hormonal formula is typically designed to layer complementary anabolic and cosmetic effects rather than rely on a single pathway. In practice, users in this category look for changes in muscular density, fullness control, and a harder visual appearance over several weeks. The fully disclosed structure is notable because it allows direct assessment of each active instead of hiding them inside a proprietary matrix. Transparency matters more in this category because risk-benefit decisions are highly dose dependent.
Unlike pre-workouts, hormone-oriented capsules do not produce an immediate perceptual marker such as stimulation, vasodilation, or paresthesia. Their observable outcomes depend on repeated dosing, training stimulus, nutrition, and time-dependent shifts in recovery capacity and tissue accretion. This is why the experience timeline is assessed in weeks, not minutes. The absence of an acute sensation should not be confused with inactivity, but it does make expectation setting essential.
The label presentation indicates a methylated oral hormonal active, which is relevant because methylation is commonly used to improve oral bioavailability. That same design feature can also increase hepatic processing demands, making organ-support strategies a common companion recommendation in this category. Users often pair such formulas with conservative cycle lengths and structured support supplements. These considerations are practical rather than cosmetic and directly affect how the product should be used.
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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