AfterDark InHuman Mentis is a nootropic-forward pre-workout built around three simultaneous performance pillars: a full-dose pump stack anchored by 7g L-Citrulline and EndoFlo circulation support, a clean energy system led by 175mg PurCaf Organic Caffeine with Theobromine extension, and a genuine nootropic cognitive layer combining L-Tyrosine, Acetyl-L-Carnitine, Uridine Monophosphate, Polygala, and Panax Ginseng for mind-muscle connection and focus that holds through the full session. The name Mentis — Latin for "of the mind" — communicates exactly where this formula differs from standard high-stim pre-workouts: the emphasis is on mental clarity, neural activation, and controlled energy as much as it is on pump and physical output. This is AfterDark's answer for athletes who want to feel locked in, not just wired. California Prop 65 Warning applies. Start with half a scoop to assess tolerance.†
Supplement Facts — AfterDark InHuman Mentis (Per Serving)
Pump and Blood Flow
- L-Citrulline — 7,000mg
- EndoFlo™ — 150mg (Mango Extract, Black Ginger Extract, Ginkgo Biloba Extract, Pine Bark Extract)
Glycogen and Muscle Fuel
- Glycogen Complex (Cluster Dextrin™ + Dextrose) — 1,210mg
Endurance and Output
- Beta-Alanine — 4,000mg
Nootropic Focus and Cognitive Support
- L-Tyrosine — 2,000mg
- Acetyl-L-Carnitine — 1,000mg
- Uridine Monophosphate — 75mg
- Polygala Extract
- Panax Ginseng Extract
Clean Energy
- PurCaf® Organic Caffeine — 175mg
- Theobromine — 75mg
- Flavors: Bomb Pop, Peach Rings, Birthday Punch, Rainbow Candy
- Start with 1/2 scoop in 8-10oz of water to assess tolerance.
- California Prop 65 Warning applies.
The Pump Stack — 7g Citrulline and EndoFlo
L-Citrulline at 7,000mg is a full clinical dose — above the 6g threshold used in multiple peer-reviewed studies documenting improvements in peak power output, time to exhaustion, and post-exercise muscle soreness. Citrulline's mechanism is conversion to arginine in the kidney, which is then converted by nitric oxide synthase (NOS) to nitric oxide in vascular endothelial cells. The oral bioavailability of Citrulline as an arginine precursor is significantly higher than supplemental arginine itself, which is extensively degraded during intestinal and hepatic first-pass metabolism. At 7g, Mentis is dosed above what the majority of pre-workouts deliver in this category — producing the vasodilation, muscle cell volumization, and nutrient delivery improvements that make pumps both a performance benefit and a visible physique outcome.†
EndoFlo™ at 150mg adds a circulation dimension that pure Citrulline doesn't cover. The blend of mango leaf extract, black ginger (Kaempferia parviflora), ginkgo biloba, and pine bark extract addresses blood flow through multiple pathways simultaneously: mango leaf's mangiferin content supports vascular tone, black ginger has documented research on blood flow and vasodilation through PDE5 inhibition (a mechanism shared with pharmaceutical vasodilators, applied here in a food-based botanical context), ginkgo biloba enhances peripheral circulation and platelet aggregation inhibition, and pine bark's proanthocyanidin content supports nitric oxide bioavailability and endothelial function. EndoFlo's multi-pathway approach to circulation complements Citrulline's NOS-dependent NO production with mechanisms that operate through separate vascular pathways, producing a more comprehensive pump effect than either approach alone.†
The Glycogen Complex — Cluster Dextrin™ (Highly Branched Cyclic Dextrin, HBCD) paired with Dextrose — provides rapid and sustained carbohydrate fuel for working muscles during the session. HBCD's unique highly branched cyclic structure gives it low osmolality (passes through the stomach rapidly without causing GI distress) and high molecular weight (provides sustained glycogen replenishment beyond the immediate glucose spike). Dextrose provides the immediate rapid glucose availability. Together they address both the fast-onset and sustained fuel demands of a training session, which is relevant to the pump stack because glycogen depletion is one of the factors that limits muscle cell volumization — glycogen stores water in muscle tissue at approximately 3-4g water per gram of glycogen.†
The Nootropic Stack — What Mentis Does Differently
The nootropic complex is what separates Mentis from standard pump-focused pre-workouts and from high-stim products that rely primarily on caffeine dose for cognitive effects. Five separate compounds address brain function from different angles, producing a focus quality that is qualitatively different from caffeine-driven stimulation — more precise, more sustained, less adrenergic in character.†
L-Tyrosine at 2,000mg is the anchor of the focus stack — a dose well above what most pre-workouts include. Tyrosine is the amino acid precursor to dopamine, norepinephrine, and epinephrine — the three catecholamine neurotransmitters responsible for alertness, drive, working memory, and stress resilience. Under conditions of physical and cognitive stress (i.e., training), catecholamine synthesis depletes available Tyrosine pools. Supplementing Tyrosine at 2g specifically replenishes this pool, maintaining catecholamine synthesis rates under the demand of a training session. The documented effects of high-dose Tyrosine in stressful conditions include sustained working memory, reduced performance decrements from stress, and improved cognitive flexibility — all directly applicable to maintaining execution quality through a demanding workout.†
Acetyl-L-Carnitine (ALCAR) at 1,000mg addresses the acetylcholine dimension of cognitive performance. ALCAR crosses the blood-brain barrier and provides the acetyl group for acetylcholine synthesis — the neurotransmitter most directly involved in attention, learning, and the motor signal precision that underlies mind-muscle connection. ALCAR also supports mitochondrial function in neurons, providing brain cells with enhanced energy production capacity under the metabolic demands of training. The combination of ALCAR's acetylcholine support and Tyrosine's catecholamine support covers two distinct neurotransmitter systems simultaneously — a more complete approach to in-workout cognition than either compound alone.†
Uridine Monophosphate at 75mg is the most pharmacologically distinctive compound in Mentis's nootropic stack — an ingredient rarely seen in pre-workouts despite solid research on its cognitive effects. Uridine is a nucleoside that crosses the blood-brain barrier and contributes to phosphatidylcholine synthesis (supporting neuronal membrane integrity), potentiates dopamine receptor signaling, and supports synaptic plasticity through its role in RNA synthesis. Research on Uridine documents improvements in cognitive performance, mood, and neural connectivity — its dopamine receptor potentiation is particularly relevant in a pre-workout context, where it amplifies the motivational and reward components of the training experience rather than simply increasing stimulant drive.†
Polygala (Polygala tenuifolia) extract contributes a traditional Chinese medicine nootropic with modern research documentation. The compound's active constituents — tenuifolin and onjisaponins — have demonstrated neuroprotective effects, acetylcholinesterase inhibition (which increases available acetylcholine by preventing its enzymatic breakdown), and BDNF (brain-derived neurotrophic factor) upregulation in animal models. As an acetylcholinesterase inhibitor, Polygala works synergistically with ALCAR's acetylcholine production support — one increases synthesis, the other reduces breakdown, producing a net increase in cholinergic tone that sharpens the precision and responsiveness of the neuromuscular signal. Panax Ginseng extract rounds out the nootropic stack as an adaptogenic clarity compound, with documented effects on working memory, mental fatigue reduction, and HPA axis stress response moderation.†
The Energy System — 175mg PurCaf and Theobromine
The deliberate decision to use 175mg of caffeine rather than the 200-400mg range typical of high-stim pre-workouts is the defining characteristic of Mentis's energy positioning. This is not an underdosed formula — it's a calibrated formula. At 175mg, PurCaf Organic Caffeine (standardized organic caffeine from green coffee, certified non-GMO) provides clear adenosine receptor antagonism for sustained alertness and reduced perceived effort during training without the adrenergic overstimulation that high caffeine doses produce in the sympathetic nervous system. The jitteriness, heart pounding, and anxiety that many athletes experience from 300mg+ caffeine products comes from excessive beta-adrenergic receptor stimulation — Mentis avoids this ceiling by keeping caffeine at a focused effective dose and supplementing the energy profile with Theobromine instead of additional caffeine.†
Theobromine at 75mg is caffeine's structural cousin — a methylxanthine alkaloid from cocoa that shares adenosine antagonism but with a longer half-life, milder CNS stimulant profile, and additional vasodilatory effects (via smooth muscle relaxation) that complement the pump stack rather than counteracting it as high-dose caffeine can. Theobromine extends the effective energy duration of Mentis's formula past the initial caffeine peak, reduces crash potential by providing a gentler taper, and adds the mild mood elevation and sense of well-being associated with cocoa alkaloids. The PurCaf + Theobromine combination is specifically designed for clean, controlled, extended energy — the energy characteristic most compatible with the nootropic focus quality that Mentis's cognitive stack produces.†
4g Beta-Alanine — Why the Tingles Matter
Beta-Alanine at 4,000mg is a full clinical dose — the amount used in most peer-reviewed trials showing ergogenic benefit. Beta-Alanine is the rate-limiting precursor to Carnosine synthesis in skeletal muscle. Carnosine is a dipeptide that acts as an intramuscular pH buffer — it neutralizes the hydrogen ions (H+) produced during high-intensity exercise that lower muscle pH, cause the burning sensation in working muscles, and ultimately force the muscle to reduce contractile force. Higher muscle Carnosine content delays this pH-driven fatigue, extending the number of quality reps achievable before contractile failure. The paresthesia (tingling sensation) that Beta-Alanine produces in the skin — particularly on the face, neck, and hands — is a benign neurological effect of the compound's transient interaction with cutaneous sensory receptors and is not an indicator of any adverse effect. It confirms the dose is present and active.†
InHuman Mentis vs. AfterDark InHuman — What's the Difference
Get Yok'd carries both AfterDark InHuman (the original) and InHuman Mentis, and the key difference is the energy and focus architecture. The original InHuman is positioned as the high-stimulant version — higher caffeine, stronger adrenergic stimulation, designed for maximum intensity and raw energy output. Mentis is the nootropic evolution — lower caffeine, significantly expanded cognitive stack (ALCAR, Uridine, Polygala, Tyrosine at 2g), same pump infrastructure (7g Citrulline), with the focus being sustained mental sharpness and mind-muscle precision alongside the physical performance. The practical recommendation: athletes who want the hardest-hitting stimulant experience reach for InHuman. Athletes who want clean, dialed-in focus with a full pump stack and energy that doesn't spike-and-crash reach for Mentis.†
Frequently Asked Questions
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Is InHuman Mentis a stimulant pre-workout or a stimulant-free pump product?
It's a stimulant pre-workout, but a moderate-stimulant one. The 175mg PurCaf Organic Caffeine provides clear energy and focus, and Theobromine extends it — but the caffeine dose is calibrated to avoid the overstimulation and jitteriness of high-stim products. It's not stimulant-free. Individuals sensitive to caffeine should start with a half scoop.† -
What does Uridine Monophosphate actually do in a pre-workout?
Uridine is a nootropic compound that supports dopamine receptor sensitivity, contributes to acetylcholine synthesis (through its role in phosphatidylcholine production), and enhances synaptic plasticity. In a pre-workout context its primary contribution is improving the motivational and mood quality of the training experience and sharpening neural signaling precision — the "locked in" feeling that distinguishes a great workout from an average one. It's not a stimulant, it's a cognitive enhancer.† -
Why does InHuman Mentis use 7g Citrulline instead of Citrulline Malate?
Pure L-Citrulline at 7g delivers more actual Citrulline per gram than Citrulline Malate (which is typically a 2:1 Citrulline-to-Malic-Acid ratio, meaning only two-thirds of the dose is Citrulline). 7g of L-Citrulline is the full clinical Citrulline dose — equivalent to about 10.5g of Citrulline Malate in Citrulline content. This is why Mentis produces the pump quality it does — the Citrulline dose is genuine, not diluted by a filler acid weight.† -
What is EndoFlo and why does it matter?
EndoFlo is a proprietary circulation blend (mango leaf, black ginger, ginkgo biloba, pine bark) that enhances blood flow through mechanisms beyond nitric oxide. Black ginger in particular has documented PDE5 inhibitory activity — the same mechanism used by pharmaceutical vasodilators — applied here through a food-based botanical that contributes to vascular smooth muscle relaxation. Combined with Citrulline's NO-dependent vasodilation, EndoFlo produces a more complete pump effect by addressing multiple circulatory pathways simultaneously.†
How to Take AfterDark InHuman Mentis
Start with 1/2 scoop in 8-10oz of water to assess tolerance, especially if sensitive to Beta-Alanine or caffeine. Progress to 1 full scoop once tolerance is confirmed. Take 20-30 minutes before training. Do not exceed 1 serving per day. Do not combine with other caffeinated products. Not for persons under 18, pregnant or nursing women, or individuals with cardiovascular conditions or sensitivity to caffeine. California Prop 65 Warning applies.†
Why Buy at Get Yok'd
- Real-time inventory across all five Southern California stores
- Available in Burbank, Glendale, Glendale Galleria, Pasadena, and North Hollywood
- Authorized retailer of AfterDark Supplements
- Staff who can help you choose between InHuman and Mentis based on your goals and stimulant preference
- One of the best loyalty programs in the supplement industry — earn rewards on every purchase
Who Should Not Take InHuman Mentis
- Not for persons under 18 years of age
- Not for pregnant or nursing women
- Not for individuals with cardiovascular conditions, high blood pressure, or heart conditions
- Not for individuals sensitive to caffeine or stimulants
- Do not combine with other stimulant-containing products
- Consult a physician before use if taking any prescription medications
- California Prop 65 Warning applies.
- Keep out of reach of children.
†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.