Hi-Tech Pharmaceuticals Plasmagen Pre-Workout Capsules 20 Servings - Hybrid | Svpplements

Nutrastop

Nutrastop | Hi-Tech Plasmagen | 80 Capsules

Arginase inhibition, HydroMax® hydration, and hard-edged capsule energy

$34.95 $54.95$1.74/serving
0

SuppVault Score

Average — known limitations

Nutrastop | Hi-Tech Plasmagen | 80 Capsules

Six dimensions, weighted by category. Each is scored 0–10 from the supplement-facts panel data and the 2,607-ingredient knowledge base.

  • Clinical Dosing 5/10
  • Label Transparency 5/10
  • Manufacturing 6/10
  • Testing 5/10
  • Inactive Ingredients 9/10
  • Value 5/10
See the full algorithm → Read methodology

Scores are deterministic — same label in, same score out. Proprietary blends naturally score lower on transparency by design, not as a penalty.

Score reflects incomplete data — label not yet scanned. Not a quality judgment.

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250mg Arginase Inhibitor Matrix
99mg Potassium as glycinate complex
Undisclosed HydroMax® Glycerol
Undisclosed Nitro-Rx® Inositol Citrulline Silicate
✓ Label Verified✓ No Prop Blends⚠ Review Advised
250mg arginase matrix — unique pump angle
HydroMax® glycerol — plasma expansion
Nitro-Rx® — layered vascular support
Advanced stimulant matrix — hard energy
Phospholipids + choline — focus support
Capsule pre-workout — gym-bag friendly
🌱 Vegan 🌾 Gluten Free 🥛 Dairy Free 🫘 Soy Free 🚫 Sugar Free
"“This is one of those formulas where arm day just feels different — fuller muscles, better vascularity, and that tight skin pump that sticks around instead of disappearing after two sets.”"
Verified buyer
Product Intelligence
📊 20 clinical / 60 value servings
Featuring: Tri-Xanthine® by Hi-Tech PharmaceuticalsHydroMax® by Glanbia NutritionalsNitro-Rx® by Hi-Tech Pharmaceuticals
⚠️ Contains proprietary blend (14 ingredients)
1. N(omega)-hydroxy-nor-L-arginine2. S-(2 Boronoethyl)-L-Cysteine HCl3. Tri-Xanthine™ Blend: [Green Coffee Bean Extract, Green Tea Extract (Leaves), Theobroma Cocoa Extract (Seed)]4. Cnidium Monnieri Extract (98% Osthole)(Fruit)5. Caffeine Anhydrous6. Hypoxanthine Riboside7. Adenosine-5'-Triphosphate Disodium Salt8. Rauwolfia serpentina Extract (Root)9. Glycerol (as HydroMax®)10. Inositol Citrulline Silicate (as Nitro-Rx®)11. Choline Bitartrate12. Phosphatidylserine (PS)13. Phosphatidylcholine (PC)14. purified Phosphatidylcholine in Medium-chain triglycerides
SuppVault Summary

High-stim capsule pre-workout with HydroMax® glycerol, Nitro-Rx®, and a multi-pathway pump design. Built for experienced users who want portable energy, vascularity, and harder training intensity.

Great Fit

  • Experienced bodybuilders chasing fuller pumps
  • Advanced lifters wanting capsule convenience
  • Hypertrophy athletes training with high volume
  • Cutting-phase users wanting gym intensity
  • Traveling lifters avoiding powder tubs
  • Experienced stimulant users wanting harder energy
  • Pump-focused trainees needing more than caffeine
  • Intermediate users upgrading from basic stim capsules

Not Ideal If

  • Beginners sensitive to strong stimulant formulas
  • Pregnant or nursing women
  • Anyone with cardiovascular stimulant restrictions
  • Users demanding full label transparency
  • Late-evening trainees protecting sleep quality
⚠️ Allergen Information +
Contains:
Manufactured in a facility that also processes:
Composition Details
Delivery Tech: Glycinate ChelateHcl Salt

Supplement Facts

Servings Per Container: 20
Ingredient Amount Per Serving % Daily Value
Adenosine 5 Triphosphate Disodium
Caffeine Anhydrous
Choline Bitartrate
Cnidium Monnieri Extract
Glycerol
Inosine
Inositol Citrulline Silicate
N Omega Hydroxy Nor L Arginine
Phosphatidylcholine
Phosphatidylcholine Mct
Phosphatidylserine (20%)
Potassium Glycinate 99mg
Alpha Yohimbine (90% Rauwolscine)
S 2 Boronoethyl L Cysteine Hcl
Tri Xanthine Blend

† Daily Value (DV) not established for this ingredient.

Brand-Published Lab Tests

Nutrastop publishes test results from independent third-party labs. Svpplements links to the manufacturer’s data — we don’t test products ourselves.

Lab data is published by the manufacturer. Svpplements neither verifies nor warrants third-party test results — we curate the link so you can check the source. How we evaluate testing →
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Timing & Effects
When Pre workout
Time Avoid evening
What You'll Feel
0-10 min
Capsules down, hydration matters immediately
10-20 min
Stimulant alertness starts building fast
💪
20-40 min
Peak energy, focus, and training urgency
🎯
40-90 min
Sustained output; pump depends on hydration
Days 1-7
Dial in dose, water, and timing
Weeks 2-4
More consistent session quality and intensity
Formula Deep Dive

Deep Dive

Electrolyte 1
K
Potassium
99mg
Below
Pump 4
N(
N(omega)-hydroxy-nor-L-arginine
undisclosed
S-
S-(2 Boronoethyl)-L-Cysteine HCl
undisclosed
Cn
Cnidium Monnieri Extract (98% Osthole)
undisclosed
In
Inositol Citrulline Silicate
undisclosed
Energy 3
Tr
Tri-Xanthine™ Blend
undisclosed
Ca
Caffeine Anhydrous
undisclosed
Ra
Rauwolfia serpentina Extract
undisclosed
Strength 2
Hy
Hypoxanthine Riboside
undisclosed
Ad
Adenosine-5'-Triphosphate Disodium Salt
undisclosed
Hydration 1
Gl
Glycerol
undisclosed
Focus 4
Ch
Choline Bitartrate
undisclosed
Ph
Phosphatidylserine
undisclosed
Ph
Phosphatidylcholine
undisclosed
Pu
Purified Phosphatidylcholine in MCTs
undisclosed
Electrolyte: 1Pump: 4Energy: 3Strength: 2Hydration: 1Focus: 4

Potassium

Form: as potassium glycinate complex
99mg Dose
3% Daily Value
Disclosed Transparency
View full research →
1 Disclosed
1 Total
0 Trademarked
0 In Blends

Dose Audit

Potassium
99mg
Nutrastop | Hi-Tech Plasmagen | 80 Capsules
BASE Nutrastop | Hi-Tech Plasmagen | 80 Capsules
$34.95
Raw Nutrition | Creatine Mono | 30 Servings
$15.95$0.53/srv 30 servings

Plasmagen is acute-performance focused and does not provide a disclosed full creatine dose. Adding daily creatine fills the long-term strength, power, and phosphocreatine-repletion gap that this capsule formula does not fully cover.

Take creatine daily, any time; use Plasmagen 20-30 minutes pre-workout

Alpha Lion | Hydration | 45 Servings
$42.99$0.95/srv 45 servings

HydroMax® glycerol performs best when fluid and electrolytes are adequate. A dedicated hydration product makes the volumization and pump side of Plasmagen more reliable, especially during long sessions or hot-weather training.

Use hydration pre-, intra-, or post-workout around Plasmagen

Raw Nutrition | Pump | 40 Servings
$34.95$0.87/srv 40 servings

Advanced users who want to push the pump side harder can pair Plasmagen with a dedicated stim-free pump formula. This is best reserved for experienced users because Plasmagen already brings both energy and vascular support.

Take both 20-30 minutes pre-workout; assess tolerance first

Raw Nutrition | Grass Fed Isolate | 25 Servings
$49.95$1.99/srv 25 servings

Plasmagen helps the session; whey isolate helps recovery and adaptation afterward. This is a simple performance-plus-recovery pairing that covers both sides of the training equation.

Take protein post-workout or anytime daily; Plasmagen pre-workout

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Per Day
Includes base product + selected items
Nutrastop | Hi-Tech Plasmagen | 80 Capsules62
$34.95
This Product
$/srv: $1.50
Them

RAW Pump likely wins on transparency and dedicated pump dosing, while Plasmagen wins on stimulant inclusion and portability.

$/srv: $1.33
This Product Wins

Plasmagen offers a more complete pre-workout experience with energy and focus built in.

$/srv: $1.25
Tie

Hemavol is cleaner and more pump-specific, while Plasmagen is more aggressive and all-in-one.

RAW | Pre | 30 Servings 86
$/srv: $1.67
Them

RAW Pre likely offers better dose transparency and more comprehensive disclosed performance support, but Plasmagen is more convenient in capsule form.

Clinical Dosing

Clinical Dosing

Arginase Inhibitor Matrix
Under-researched No clinical-dose range yet — manufacturer dose only.
250mg
Potassium as glycinate complex
Under-researched No clinical-dose range yet — manufacturer dose only.
99mg
HydroMax® Glycerol
Under-researched No clinical-dose range yet — manufacturer dose only.
Undisclosed
Nitro-Rx® Inositol Citrulline Silicate
Under-researched No clinical-dose range yet — manufacturer dose only.
Undisclosed
Comparison

How this stacks up

Side-by-side against the closest competitors. Score reflects clinical dosing, transparency, and testing.

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.

More Information
Full Product Description Article

Nutrastop Hi-Tech Plasmagen is a capsule-based high-stim pump and performance hybrid built around a more advanced concept than the average nitric oxide product. Instead of relying on a standard citrulline-heavy powder formula, it uses a multi-pathway approach: upstream nitric oxide support through arginase inhibition, downstream vascular support, plasma-expanding hydration support, stimulant-driven training intensity, and membrane-based cognitive ingredients for focus. In plain terms, this is designed to make training feel tighter, more vascular, more energized, and more mentally aggressive.

The most interesting part of the formula is the 250 mg arginase inhibitor concept verified in retailer research around N(omega)-hydroxy-nor-L-arginine and S-(2 Boronoethyl)-L-Cysteine HCl. Arginase competes with nitric oxide synthase for arginine; inhibit arginase, and more arginine can stay available for NO production. That is a smart mechanistic strategy because it tries to improve pump biochemistry upstream rather than only dumping in more substrate. The issue is transparency: the individual amounts are not disclosed, so while the concept is strong, exact dose validation is impossible.

HydroMax® glycerol is another major pillar. Glycerol works osmotically, pulling and retaining water in intracellular and extracellular compartments to expand plasma volume and drive that dense, swollen “water pump.” Research-supported glycerol ranges commonly land around 2,000-5,000 mg, but the Plasmagen label does not disclose the exact HydroMax® amount. That means the ingredient choice is excellent, but the dose cannot be verified against the literature. The same applies to Nitro-Rx® inositol citrulline silicate: it is included for pump support and likely contributes to blood flow and vasodilation, but the lack of disclosed milligrams keeps it from earning a full clinical endorsement.

The stimulant backbone is clearly assertive. Caffeine anhydrous is present alongside the proprietary Tri-Xanthine™ blend of green coffee, green tea, and cocoa extract, plus Rauwolfia serpentina extract. That tells you this is not a soft-focus capsule product. Expect fast onset energy from the anhydrous caffeine, a broader methylxanthine feel from the blend, and a sharper, harder edge from the advanced stimulant matrix. Because total caffeine is undisclosed, stimulant tolerance matters here.

On the focus side, choline bitartrate, phosphatidylserine, phosphatidylcholine, and purified phosphatidylcholine in MCTs create a membrane-and-neurotransmitter support angle. Choline is the precursor to acetylcholine, the neurotransmitter involved in muscle contraction and attention. Phosphatidylserine has moderate evidence around cognitive support and stress modulation at around 300 mg in studies, while phosphatidylcholine supports cell membranes and acts as a choline donor. Again, the formula idea is smart, but the hidden doses mean these likely function as supportive nootropic layers rather than fully clinically validated standalone doses.

Potassium is one of the few fully disclosed actives at 99 mg as potassium glycinate complex. Potassium is essential for nerve transmission, membrane potential, and muscle contraction, and the glycinate form is gentler and better tolerated than harsher potassium salts. This is not a high-performance electrolyte dose in itself, but it is a sensible inclusion to support neuromuscular function in a pump-oriented formula.

Synergy is where Plasmagen makes the most sense. Arginase inhibitors aim to keep NO production favorable, Nitro-Rx® adds an additional pump pathway, HydroMax® increases plasma volume and cell swelling, stimulants raise training output, and choline/phospholipids sharpen the brain-muscle link. That gives the formula a coherent identity: not just energy, not just pump, but vascular aggression plus heightened training intensity.

The limitation is transparency. This is a proprietary-blend formula, and that matters. Compared with full-disclosure leaders in the category, Plasmagen asks you to trust the formulator on several important actives. Day 1, expect energy, drive, appetite suppression in some users, and a fuller pump if hydration is on point. Over 2-4 weeks, the experience is less about ingredient loading and more about repeatedly leveraging the same acute training effect: better session intensity, stronger perceived vascularity, and a more “locked in” feel when used before hard training.

Science & Clinical References 46 citations
Arginase Inhibition and Nitric Oxide Availability6 studies

Arginase and nitric oxide synthase compete for arginine. By inhibiting arginase, compounds like nor-NOHA and BEC aim to preserve arginine availability for endothelial nitric oxide production, which can improve vasodilation dynamics during exercise. This is mechanistically distinct from simply adding more oral arginine, which often underperforms because of first-pass metabolism and limited bioavailability. In a sports nutrition context, this makes arginase inhibition an upstream strategy for supporting pumps and vascularity.

Glycerol as a Hyperhydration and Cell-Volumizing Agent12 studies

Glycerol increases total body water by osmotically retaining fluid across intracellular and extracellular spaces. That expansion in plasma volume can improve heat tolerance, delay dehydration, and create a visibly fuller muscular appearance during training. In resistance exercise, users typically value glycerol less for raw strength and more for the rounder, denser pump it helps create. Its effectiveness depends heavily on concurrent fluid intake, making hydration behavior critical.

Choline and Phospholipids in Pre-Workout Focus Formulas18 studies

Choline serves as a precursor to acetylcholine, a neurotransmitter central to attention, motor control, and neuromuscular signaling. Phosphatidylcholine and phosphatidylserine contribute membrane phospholipids that support neuronal structure and signaling integrity. Although these ingredients are not as acutely stimulating as caffeine, they can make a formula feel more controlled and purpose-driven rather than merely excitatory. Their utility is often greatest when layered underneath stimulants rather than used alone.

Methylxanthine Layering Beyond Caffeine Alone10 studies

Caffeine is the dominant acute ergogenic stimulant in most pre-workouts, but formulas that combine multiple xanthine sources can alter the character of the effect. Cocoa-derived theobromine and tea/coffee alkaloid profiles can broaden stimulation and change how energy feels subjectively. Rather than only increasing alertness, these combinations often aim for a longer, more textured performance state. The exact experience depends on total dose and ratio, which is why disclosed milligrams matter so much in final evaluation.

Product Details Specs
Product Type Pre-Workout
Category High-Stimulant Pump Pre-Workout
Brand Nutrastop
Form Capsule
Servings 20
How to Take — Training Protocol6 phases

How to Use Nutrastop | Hi-Tech Plasmagen | 20 Capsules for Optimal Results

45-60 minutes before training
Pre-Session Prep
Hydrate early, especially if you want the most from HydroMax® glycerol. Avoid stacking additional caffeine sources unless you already know your tolerance.
First 1-3 uses
Dose Assessment
Start with 2 capsules if you are not already tolerant to strong stimulant products. Move to the full 4-capsule serving only after confirming the experience is manageable.
20-30 minutes before training
Full Pre-Workout Dose
Take 4 capsules with a large glass of water. A light meal is acceptable, but avoid a heavy pre-workout meal if you want faster stimulant onset.
10-20 minutes after dosing
Onset Window
Use this period for warm-ups and ramping sets. Most users notice the stimulant portion first, followed by stronger pump effects once working sets begin.
20-60 minutes after dosing
Peak Training Window
This is the best window for your hardest sets, higher-volume work, and pump-focused training. Keep water intake high during the session to support glycerol-driven fullness.
After your session
Post-Training
Rehydrate and transition to recovery nutrition. Pairing with daily creatine and post-workout protein makes the overall training stack more complete.
Warnings
Contains caffeine anhydrous plus additional stimulant compounds; total stimulant content is undisclosed.
Start with 2 capsules if you are stimulant-sensitive or have not used strong pre-workouts recently.
Do not combine with other high-stim pre-workouts, strong fat burners, or large amounts of coffee near the same dosing window.
Avoid use late in the day due to likely sleep disruption.
Not appropriate during pregnancy or nursing.
Cycling: No strict physiological loading cycle is required, but many users reserve it for harder training days to reduce stimulant tolerance buildup.
Quick Answers

Quick Answers

What is Plasmagen designed to do?

Plasmagen is a capsule pre-workout hybrid built to increase energy, vascularity, and training focus. Its core strategy combines arginase inhibition, HydroMax® glycerol, Nitro-Rx®, and a strong stimulant matrix.

How many capsules are in a serving?

One serving is 4 capsules. The bottle provides 20 servings total.

How long before training should I take Plasmagen?

Take it about 20-30 minutes before lifting. That gives the stimulant ingredients time to kick in before your first working sets.

Is this a stim-free pump product?

No. It contains caffeine anhydrous, Tri-Xanthine™, and an advanced stimulant matrix, so this is firmly on the stimulant side of the category.

How much caffeine is in Plasmagen?

The label lists caffeine anhydrous and stimulant extracts, but total caffeine is not disclosed. That makes it important to start conservatively if you are not sure of your tolerance.

What makes the pump side of this formula different?

Plasmagen does not rely on a basic arginine-only approach. It uses arginase inhibitor compounds, HydroMax® glycerol for plasma expansion, and Nitro-Rx® for a more layered pump strategy.

Can I stack Plasmagen with creatine?

Yes, daily creatine is a smart addition because Plasmagen does not provide a disclosed full creatine dose. A product like raw-nutrition-creatine pairs well for long-term strength and performance support.

Should beginners use Plasmagen?

Usually no, or only with a partial serving first. The undisclosed stimulant load and harder-edged profile make it better suited to experienced pre-workout users.

Can I take this in the evening?

That is not recommended for most users. The stimulant profile is strong enough that it can easily interfere with sleep if taken late.

Does HydroMax® matter in a capsule formula?

Yes, if you hydrate properly. Glycerol works by increasing fluid retention and plasma volume, so the effect depends heavily on water intake.

Is Plasmagen fully transparent?

No. Several key ingredients are included in proprietary blends, so you can see what is in the formula but not the exact amount of each major active.

What should I avoid stacking with Plasmagen?

Avoid additional high-stim pre-workouts, strong fat burners, or large amounts of coffee near the same window. The label already contains multiple stimulant sources and the total amount is not disclosed.

What can I stack with Plasmagen for more hydration support?

A dedicated hydration product is a smart add-on because HydroMax® works better when water and electrolytes are adequate. alpha-lion-super-human-hydration is a logical partner around training.

Is Plasmagen better as a daily pre-workout or occasional hard-session formula?

For most users, it makes more sense as a hard-session pre-workout. That approach helps manage stimulant tolerance while preserving its stronger feel for demanding training days.
62

SuppVault Score

Nutrastop | Hi-Tech Plasmagen | 80 Capsules

💊 Clinical Dosing 5/10

No key actives identified

🏷 Label Transparency 5/10

No ingredient data

🏭 Manufacturing 6/10

Third-party testing mentioned

🔬 Testing 5/10

Third-party testing mentioned (no cert)

🧪 Inactive Ingredients 9/10

Minimal inactive ingredients

💰 Value 5/10

Insufficient price/serving data

Scores are relative to category averages. Proprietary blends score lower on transparency naturally — this is neutral fact, not penalty.

Athlete status

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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