FSU: Nitrum is the next evolution in non-stim pre-workout liquids, engineered by Inspired Nutraceuticals and V1 Nutra to flood your muscles with peak hydration, relentless endurance, and skin-splitting pumps — all without caffeine. When it comes to pumps, size matters: a massive 20,000mg dose of GlycoClear® Glycerol supercharges muscle hydration for fuller, harder pumps and endless endurance, while 3,000mg of Citrulline Nitrate (as NO3-T®) unlocks nitric oxide production for insane vascularity and circulation. Rounding out the formula, 1,000mg of NitroCarn™ (Glycine Propionyl-L-Carnitine) fuels muscle function, recovery, oxygen utilization, and even greater nitric oxide production. 100% stimulant-free — no jitters, no crash — pure pump liquid that stacks with anything. Crush every set, dominate every rep, and feel the power in every flex. Take 1 full serving 15-30 minutes before your workout with a full glass of water. Available in Passion Play, Kiwiberry Haze, Gummy Glacier, and 'Nana RaspbARES.†
Supplement Facts — FSU: Nitrum (Per Full Serving / 2 Tbsp)
GlycoClear® Glycerol — 20,000mg (20g)
Citrulline Nitrate (as NO3-T®) — 3,000mg (3g)
NitroCarn™ (Glycine Propionyl-L-Carnitine / GPLC) — 1,000mg (1g)
100% stimulant-free — no caffeine
Liquid format — no mixing required beyond diluting in water
16-32 servings per bottle depending on size (2-tablespoon max serving; half-servings also usable)
Flavors: Passion Play (Passionfruit Lemonade), Kiwiberry Haze (Strawberry Kiwi), Gummy Glacier (White Gummy Bear), 'Nana RaspbARES (Banana Raspberry)
California Prop 65 Warning applies.
20g GlycoClear® Glycerol — Solving the "Sand" Problem
Most glycerol powders on the market are standardized to only around 65% actual glycerol — a fact the brand has publicly criticized, noting that consuming a leading glycerol powder means consuming close to the same amount of inert filler alongside it, since that concentration is only truly stable as a powder at that dilution. FSU: Nitrum sidesteps this entirely by delivering glycerol in true liquid form via GlycoClear® — a full 20,000mg (20g) dose, among the highest glycerol doses available in the category. Glycerol is a potent osmolyte that draws water into and around muscle cells, producing cellular hyperhydration — increased muscle volume, fuller pumps, and delayed dehydration during training, distinct from the vascular pump that nitric oxide-driving ingredients produce.†
3g Citrulline Nitrate (NO3-T®) — Two Pathways to Nitric Oxide in One Compound
Citrulline Nitrate combines Citrulline's arginine-conversion pathway with a nitrate ion bonded directly to the molecule — meaning this single ingredient feeds nitric oxide production through two distinct routes simultaneously. Citrulline converts to Arginine in the kidney, feeding the eNOS (endothelial nitric oxide synthase) pathway; the bonded nitrate additionally converts to nitric oxide through a separate, non-enzymatic nitrate-nitrite-NO pathway. This dual-pathway compound is the update from FSU: Nitrum's predecessor, FSU Serum, which used Arginine Nitrate instead — Inspired and V1 Nutra specifically upgraded to Citrulline Nitrate at 50% more total NO3-T nitrate content for a more potent vascularity and circulation effect.†
NitroCarn™ (GPLC) — 1g — The Third Mechanism
NitroCarn™ is Glycine Propionyl-L-Carnitine, a specialized carnitine ester distinct from standard L-Carnitine or Acetyl-L-Carnitine. GPLC has documented research on enhancing nitric oxide production independently of the arginine/citrulline pathway, while also supporting mitochondrial fatty acid transport and oxygen utilization during exercise. Including NitroCarn™ alongside Citrulline Nitrate gives FSU: Nitrum a third distinct nitric oxide-supporting mechanism, on top of its established recovery and muscle function benefits from the carnitine backbone itself.†
FSU: Nitrum vs. FSU Serum — The Upgrade
FSU: Nitrum is the more potent evolution of Inspired's original stimulant-free bulk liquid pre-workout, FSU Serum. The brands carried over the signature 20g dose of GlycoClear glycerol unchanged, but upgraded the nitrate component — swapping Arginine Nitrate for Citrulline Nitrate at 50% more NO3-T nitrate content — and added NitroCarn™ as an entirely new third ingredient not present in the original Serum formula. If you're a fan of FSU Serum and have had great results, FSU: Nitrum takes that same experience up a notch.†
Frequently Asked Questions
Does FSU: Nitrum contain caffeine or stimulants?
No — this formula is 100% stimulant-free. Its effects come entirely from GlycoClear Glycerol, Citrulline Nitrate, and NitroCarn rather than caffeine, yohimbine, or any other CNS stimulant.†Can FSU: Nitrum be stacked with a stimulant pre-workout?
Yes — this is one of its primary intended use cases. Since it's completely stimulant-free, it stacks with any caffeinated pre-workout or standalone stimulant product without adding to total caffeine intake, layering additional pump and hydration support on top.†How is FSU: Nitrum different from FSU Serum?
Both share the same 20g GlycoClear Glycerol dose. Nitrum upgrades the nitrate component from Arginine Nitrate to Citrulline Nitrate (50% more total NO3-T nitrate) and adds NitroCarn™ (GPLC) as a new third active ingredient not present in Serum.†Is FSU: Nitrum appropriate for tested athletes?
Based on the disclosed formula — GlycoClear Glycerol, Citrulline Nitrate, and NitroCarn (GPLC) — FSU: Nitrum does not appear to contain compounds prohibited by WADA or NCAA. Tested athletes should review the complete label and verify with their governing body as standard practice.†
How to Take FSU: Nitrum
Take 1 full serving (2 tablespoons) 15-30 minutes before your workout with a full glass of water. Half-servings can be used for a lighter pump effect. Not intended for use by persons under 18. Consult a physician before use if pregnant, nursing, or having any medical condition. Discontinue use if you experience any adverse reaction. 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 Inspired Nutraceuticals retailer — carrying FSU: Nitrum alongside DVST8 NEO, MÜÜV, and the full Inspired Nutraceuticals lineup
Staff who can help you build the right stacked or standalone pump protocol incorporating FSU: Nitrum
One of the best loyalty programs in the supplement industry — earn rewards on every purchase
Who Should Exercise Caution with FSU: Nitrum
Not intended for use by persons under 18 years of age
Not for pregnant or nursing women
Individuals with kidney disease should consult a physician — high-dose amino acids and glycerol increase renal processing demand
Individuals with diabetes or blood sugar regulation concerns should consult a physician regarding glycerol's osmotic effects
Individuals with cardiovascular conditions should consult a physician regarding nitrate content
Consult a physician before use if taking any prescription medications or having any medical condition
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.