KXR is a VMI Sports product range, not an industry shorthand for a generic high-stimulant formula. The manufacturer distinguishes KXR OG High-Stim Pre-Workout, KXR Sport, KXR Stacked and ready-to-drink bottles. The suffix and format matter before any ingredient or caffeine comparison.
What the current OG panel shows
The manufacturer’s OG Supplement Facts graphic, reviewed on October 13, 2026, specifies one 8.8 g scoop and 30 servings. Selected amounts include:
- Beta-alanine: 3.2 g; L-taurine: 1.5 g
- Theobromine: 300 mg
- Ancient peat and apple extract, branded elevATP: 150 mg
- Choline bitartrate, branded VitaCholine: 500 mg
- A caffeine blend weighing 586 mg
The label graphic and OG product page identify 400 mg caffeine. The 586 mg blend comprises caffeine citrate, caffeine anhydrous and dicaffeine malate; its total ingredient weight should not be reported as 586 mg of caffeine.
Pay attention to the less prominent entries
The OG graphic also lists 1.5 mg of an entry described as Alpha Yohimbine Hydrochloride 90% from Rauwolfia vomitoria root. Its “Huperzine A 1%” entry is 3 mg of that specified ingredient, not 3 mg of pure huperzine A. Retain concentration information instead of stripping it from a comparison.
This is not a caffeine-only product. The displayed panel does not list creatine or citrulline, so neither should be added to an OG ingredient summary simply because those ingredients are common in other pre-workouts.
KXR Sport is a separate formula
The Sport page lists 200 mg caffeine from coffee bean, 1.6 g beta-alanine, 1.5 g taurine and 1 g citrulline malate. Those figures should not be imported into the OG formula. A flavor called Gummy Bear can appear in both ranges without making the products equivalent.
Other formats and editions need their own labels. A ready-to-drink bottle cannot be evaluated by copying a powder’s scoop instructions, and an older seller listing may describe a different revision.
Interpreting 400 mg
OG’s stated caffeine amount equals FDA’s general daily reference for most adults before other caffeine is counted. That daily reference is not a recommended pre-workout dose or an individual safety guarantee.
Check the actual package, warnings and all stimulant ingredients. Seek individualized advice when medications or health conditions are relevant. This label-based comparison does not endorse a high-stimulant serving, promise a crash-free experience or substitute marketing claims for evidence.
Related product references
These retained Bucked Up links lead to separate products and offers, not the product reviewed above. Compare each current label independently; they are not automatic substitutes or stacking recommendations.
Affiliate disclosure: Purchases through these links may earn a commission. Offer eligibility, exclusions and any discount are determined at checkout; savings are not guaranteed.
