Afterdark | Inhuman Pre | 21 ServingsAfterdark
- SuppVault Score
- 97/100
- Per serving
- $2.14

Afterdark
375mg sustained caffeine with real beta-alanine and citrulline support
$44.95 $49.99$2.14/servingAfterdark Inhuman is a true high-stim pre-workout built for hard-hitting energy, focus, and training intensity. It pairs an advanced stimulant matrix with core performance support for pumps, buffering, and hydration. Key data point: 375mg total caffeine yield.
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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Inhuman includes only 500mg Creatine Pyrinox™, which is not enough to saturate muscle creatine stores. Adding 3-5g creatine monohydrate daily complements the pre-workout by improving phosphocreatine replenishment, which pairs well with beta-alanine’s acid-buffering role for stronger repeated-effort performance.
Take daily anytime; can be mixed with this pre-workout or taken post-workout
This pre includes sodium, chloride, and taurine, but the electrolyte payload is still modest for heavy sweaters or long sessions. A dedicated hydration product strengthens fluid balance, neuromuscular function, and endurance, especially when the stimulant load increases sweat rate and training intensity.
Use alongside training or sip intra-workout after taking Inhuman pre-workout
The formula contains only 750mg glycogen polymers, which is far below a true carbohydrate performance dose. Adding a real intra-workout carb source helps maintain output, muscle fullness, and training quality during longer sessions, while citrulline-driven blood flow improves nutrient delivery.
Sip during training, especially on sessions longer than 60 minutes
Inhuman is built to improve training intensity and work quality, but recovery still depends on sufficient amino acid delivery after the session. Pairing a fast-digesting protein with this formula helps translate harder training into better repair and adaptation.
Take within the post-workout meal window based on your normal nutrition plan
If you like Inhuman’s energy but want more advanced blood-flow support, a stim-free pump product can add more citrulline, glycerol, nitrates, or agmatine without increasing stimulant burden. This is especially useful because the current 5g citrulline malate dose is good but not maxed out for pump-chasers.
Take 20-30 minutes pre-workout together with or slightly before Inhuman
Choose Inhuman if you want aggressive energy and a much harder-driving training experience.
Both target experienced stim users, with the better pick depending on preferred feel and formula style.
It likely wins on transparency and broader fully-dosed performance coverage.
Inhuman stands out for its delayed-release caffeine architecture and balanced long-session energy profile.
Side-by-side against the closest competitors. Score reflects clinical dosing, transparency, and testing.
Afterdark | Inhuman Pre | 21 ServingsAfterdark
Afterdark | EPO+ Pump | 21 ServingsAfterdark
Choose Inhuman if you want aggressive energy and a much harder-driving training experience.
Compare side-by-side →Both target experienced stim users, with the better pick depending on preferred feel and formula style.
Compare side-by-side →
Alpha Lion | SH Elite | 42 ServingsAlpha Lion
It likely wins on transparency and broader fully-dosed performance coverage.
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 Inhuman is a true high-stim pre-workout with a deliberate split personality: it is designed to hit hard neurologically while still covering the core performance bases that separate a serious pre from a glorified energy drink. The formula leans heavily into sustained CNS output, focus, and workout intensity, then backs that up with meaningful support for blood flow, buffering, hydration, and work capacity. That matters, because many aggressive stimulant formulas neglect the actual physiology of training. Inhuman does not fully solve every category at clinical-best levels, but it is clearly built to make hard sessions feel urgent, focused, and physically productive.
The stimulant architecture is the headline. The delayed release caffeine matrix totals 400mg and yields 375mg caffeine from caffeine anhydrous, dicaffeine malate, and micro-encapsulated caffeine. That combination gives you a faster front-end kick from anhydrous caffeine plus a more extended tail from the sustained-release forms, which is exactly what heavy stimulants need if they are going to avoid peaking too early and crashing mid-session. Layered on top are 200mg theobromine HCl and 1.5mg alpha yohimbine. Theobromine is a methylxanthine like caffeine but typically feels smoother and longer-lasting, adding mood elevation and bronchodilatory stimulation without simply duplicating caffeine’s effect. Alpha yohimbine intensifies adrenergic drive and is one reason this formula will feel distinctly stronger than its caffeine number alone suggests.
For focus, Afterdark added 500mg L-tyrosine, 100mg L-theanine, NeuroRush™ at 150mg, and Huperzia serrata extract at 100mcg standardized to 1% huperzine A. Tyrosine is the precursor to dopamine, norepinephrine, and epinephrine, and research supports it most strongly for preserving cognitive performance under stress. At 500mg, this is useful but below the much larger weight-based doses often used in acute stress studies, so expect support rather than a standalone nootropic effect. Theanine at 100mg is right in the effective range and helps smooth the high caffeine load by moderating excess excitatory signaling while preserving alertness. NeuroRush at 150mg sits at the upper end of its intended range, contributing coffee polyphenols and chlorogenic-acid-driven support for mental energy without adding more brute-force stimulant pressure. Huperzine A here yields roughly 1mcg actual huperzine A based on the listed standardization, which is far below the doses typically used in cognition products; functionally, this is not a major driver of the experience.
On the performance side, 5,000mg L-citrulline malate is respectable, though it matters that the label lists citrulline malate rather than pure L-citrulline. Because part of that weight is malate, the actual citrulline yield is lower than a 5g pure citrulline dose. You should still expect better blood flow, more noticeable pumps, and improved training feel, but this is not the same as a full 6-8g pure citrulline build. Beta-alanine at 3,500mg is a strong inclusion and one of the formula’s most evidence-aligned doses. Beta-alanine works by raising intramuscular carnosine over time, which buffers hydrogen ions and helps delay the burning fatigue that accumulates during repeated hard efforts. This is not about day-one strength spikes; it is about improved high-intensity work capacity after consistent use. Taurine at 1,000mg is also right in the clinically useful range, supporting osmoregulation, calcium handling, neuromodulation, and cellular hydration. Sodium at 100mg and chloride at 120mg are modest but useful additions for fluid balance and neuromuscular function, especially when paired with taurine. The 750mg glycogen polymer blend of dextrose and D-ribose is a small top-off rather than a true carbohydrate performance dose. Creatine Pyrinox™ at 500mg, a blend of creatine pyruvate and L-arginine L-pyroglutamate, is included more as a specialty support ingredient than as a replacement for daily creatine monohydrate loading.
As a system, the formula is built around four layers: immediate and sustained stimulation, smoother focus control, blood-flow enhancement, and fatigue resistance. Caffeine plus theobromine plus alpha yohimbine drives urgency and intensity. Theanine, taurine, tyrosine, and NeuroRush help keep that stimulation usable. Citrulline malate improves delivery of oxygen and nutrients to working muscle, while beta-alanine increases tolerance for the acidic fatigue of repeated efforts. The electrolyte support helps keep contraction quality and hydration from falling apart when stimulation rises.
Transparency is mixed. Most major actives are clearly disclosed with doses, which is a major advantage over many high-stim formulas. The main exception is the delayed release caffeine matrix, where individual component amounts are hidden inside a blend even though total caffeine yield is stated at 375mg. That is better than a fully proprietary stim blend, but it is not perfect transparency.
What to expect: on day one, expect a pronounced stimulant rise, likely some beta-alanine tingles, stronger training aggression, and better set-to-set focus than a standard pre. Over 2-4 weeks of consistent use, the beta-alanine becomes more meaningful as muscle carnosine builds, and the formula’s endurance support starts to catch up to its stimulant intensity. Inhuman is best understood as a hard-hitting pre-workout that earns credibility by including real ergogenic support instead of relying on hype alone.
A blended caffeine system can alter the pharmacokinetic profile compared with a single fast-release source. Anhydrous caffeine typically drives the early rise in alertness, while slower-yielding forms may extend plasma caffeine availability and perceived energy duration. That matters in long sessions where a front-loaded stimulant hit often fades before training volume is complete. The practical result is a longer central nervous system runway rather than a simple spike-and-crash pattern.
Beta-alanine increases muscle carnosine over time, which helps buffer hydrogen ions generated during high-intensity work. By improving intracellular acid buffering, it may support repeated efforts, total work performed, and fatigue resistance in demanding training blocks. The effect is cumulative rather than immediate, so daily use matters more than acute timing. Paresthesia is common acutely, but the ergogenic value comes from elevated tissue carnosine stores.
Citrulline serves as an arginine precursor and can raise nitric oxide production more effectively than oral arginine in many settings. That may support vasodilation, nutrient delivery, and the subjective pump effect during training. The malate component is also discussed in relation to energy metabolism, although its direct contribution remains less certain than citrulline’s NO pathway role. In pre-workouts, citrulline malate is primarily valued for pump support and session quality.
L-theanine can smooth stimulant experience by influencing excitatory signaling and promoting a calmer attentional state. Tyrosine supports catecholamine synthesis, which becomes especially relevant under stress, fatigue, or prolonged cognitive demand. Together, they are often used to improve focus quality rather than simply increasing raw stimulation. In a high-stim pre-workout, this pairing can help direct arousal toward task engagement instead of scattered nervous energy.
Taurine is involved in osmoregulation, calcium handling, membrane stability, and neuromuscular function. These mechanisms help explain its use in performance formulas targeting endurance, hydration support, and contraction efficiency. Taurine may also complement high-stim formulas by supporting a more functional performance feel rather than just adding stimulation. At evidence-based doses, it is a versatile inclusion with both cellular and exercise-relevant roles.
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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