L-Arginine Hydrochloride (99.5% Pure Pharmaceutical-Grade Amino Acid)

Leading the 600mg jet-black capsule at 180mg per capsule (5,400mg per 30-capsule bottle), pharmaceutical-grade L-Arginine HCl serves as the direct biological nitrogen donor for endothelial nitric oxide synthase (eNOS). Within 30 to 45 minutes of ingestion alongside 300ml of water, L-Arginine HCl elevates vascular nitric oxide biosynthesis—relaxing vascular smooth muscle, increasing arterial blood flow during heavy gym resistance sets, and establishing immediate peripheral fullness for evening physical performance.

Tropical UV-Black Capsule Protection & Synergy: Housed inside our UV-shielded jet-black capsule shell with internal silica desiccant control so hygroscopic L-Arginine crystals never absorb Malaysia’s 80%+ equatorial humidity or degrade prior to ingestion. (Directly catalyzed by 15mg Bioperine Black Pepper Extract (MP-ACT-06) for rapid intestinal transport and paired with 140mg L-Citrulline Malate 2:1 (MP-ACT-02) for dual-wave Extended-Release (XR) nitric oxide continuity.)

L-Citrulline DL-Malate (2:1 Bio-Active Stoichiometric Vascular Complex)

Oral L-Arginine alone is partially metabolized by intestinal and hepatic arginase enzymes within 2 hours. That is why Magnum Pump XR incorporates 140mg of L-Citrulline Malate 2:1 (4,200mg per bottle) to engineer true Extended-Release ("XR") kinetics. L-Citrulline bypasses first-pass liver breakdown completely and is steadily converted by renal argininosuccinate synthase into fresh plasma L-Arginine over 4 to 6 hours—while its DL-Malate fraction enters the Krebs cycle to buffer muscular ammonia and delay physical exhaustion.

Tropical UV-Black Capsule Protection & Synergy: L-Citrulline Malate is notoriously moisture-sensitive in tropical climates; our low-permeability jet-black capsule wall prevents malic-acid deliquescence even during warm courier transit across Peninsular and East Malaysia. (Combines with 180mg L-Arginine HCl (MP-ACT-01) to deliver 320mg of dual-stage Nitric Oxide amino precursors per capsule (9,600mg per bottle).)

Tribulus terrestris L. (Standardized Aerial & Fruit Pericarp Saponin Complex)

To justify the "Testosterone Pro Series — Maximum Strength" crest emblazoned on the obsidian-and-crimson bottle, Magnum Pump XR delivers 110mg of standardized Tribulus Terrestris fruit extract (3,300mg per bottle). Rich in steroidal furostanol saponins, Tribulus works in concert with the L-Arginine/L-Citrulline vascular matrix to link mechanical blood-flow expansion with assertive physical drive, lifting power in the gym, and confident evening stamina.

Tropical UV-Black Capsule Protection & Synergy: Opaque carbon-black capsule pigmentation blocks 99.8% of ambient UV-A and UV-B light, preventing photolytic oxidation of steroidal saponin glycosides. (Forms the "Testosterone Pro Series" botanical triad alongside 90mg Malaysian Tongkat Ali 100:1 (MP-ACT-04) and 65mg Thai Black Ginger (MP-ACT-05).)

Eurycoma longifolia Jack (Freeze-Dried Standardized Mature Root Extract)

Every capsule of Magnum Pump XR anchors its imported amino-acid matrix in authentic Malaysian heritage phytochemistry: 90mg of 100:1 Eurycoma longifolia root extract (2,700mg per bottle). High-intensity training and long corporate hours in Kuala Lumpur, Johor Bahru, or Penang elevate serum cortisol, which binds free vitality hormones. Standardized eurycomanone quassinoids moderate stress-induced cortisol spikes and support resilient baseline vitality across your entire 30-black-capsule cycle.

Tropical UV-Black Capsule Protection & Synergy: Freeze-dried aqueous extraction removes woody cellulose fibers, allowing rapid gastric dispersion alongside L-Arginine without bitter herbal reflux. (Amplifies the androgenic conditioning of 110mg Tribulus Terrestris (MP-ACT-03) while 15mg Bioperine (MP-ACT-06) maximizes intestinal quassinoid uptake.)

Kaempferia parviflora Wall. ex Baker (Standardized Dark-Purple Rhizome Extract)

Revered across Malaysia and Southeast Asia as Kunyit Hitam (Thai Black Ginger), Kaempferia parviflora at 65mg per capsule (1,950mg per bottle) is the secret vascular multiplier inside Magnum Pump XR. Its standardized polymethoxyflavones (PMFs) act downstream of L-Arginine and L-Citrulline—supporting endothelial nitric oxide expression, preserving intracellular cGMP signaling in peripheral vascular beds, and enhancing physical grip strength and cardiorespiratory endurance.

Tropical UV-Black Capsule Protection & Synergy: Polymethoxyflavones are highly photosensitive and rapidly lose bio-activity when exposed to room light inside clear capsules. Magnum Pump XR’s signature jet-black capsule shell provides a 100% dark-room shield around every milligram of Kunyit Hitam. (Locks into the L-Arginine HCl (180mg) + L-Citrulline Malate (140mg) pathway to reinforce peripheral vascular responsiveness.)

Piper nigrum L. (Standardized Piperine Alkaloid Bio-Enhancer)

Even the purest amino acids and root extracts are wasted if they pass unabsorbed through the digestive tract. Magnum Pump XR completes its exact 600mg jet-black capsule formulation with 15mg of standardized 95% Piperine (Bioperine Black Pepper Extract — 450mg per bottle). Bioperine stimulates intestinal amino-acid transporters and momentarily slows hepatic glucuronidation, increasing plasma bioavailability of L-Arginine, L-Citrulline, Tongkat Ali quassinoids, and Black Ginger PMFs by up to 30%.

Tropical UV-Black Capsule Protection & Synergy: Accelerates absorption even when Magnum Pump XR is taken 45 minutes after a high-protein Malaysian meal, ensuring consistent 30-to-45-minute pre-activity onset. (Catalyzes all five companion actives (180mg + 140mg + 110mg + 90mg + 65mg + 15mg = 600mg exact per black capsule).)