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BPI Sports 1.M.R™ The OG Pre Workout

BPI Sports 25 Servings

BPI Sports 1 M.R. The OG Pre-Workout brings back one of the most legendary names in American hardcore sports nutrition. Originally known as One More Rep,  1. M.R became famous for its intense stimulant profile, explosive training energy and uncompromising approach to gym performance.


Now returning as  1 M.R The OG, this powerful pre-workout combines a massive 9,625mg Pump Matrix with a 575mg OG Energy Matrix, featuring Caffeine Anhydrous, 2-Aminoisoheptane HCl (DMHA), Theobromine and Geranium Extract.

Developed for experienced pre-workout enthusiasts, BPI Sports 1 M.R . The OG targets intense energy, mental focus, muscle pumps, and endurance during demanding training sessions.

What Is BPI Sports 1 M.R The OG?


BPI Sports 1 M.R. The OG is a high-stimulant American pre-workout built around two powerful ingredient systems: one for muscle pumps and exercise performance, and the other for energy and mental intensity.

The formula combines nitric oxide-related amino acids, endurance ingredients, and multiple stimulants into a comprehensive pre-training supplement.

Key Benefits



  • Extreme Training Energy: Caffeine and DMHA contribute to the formula's intense stimulant profile.

  • Mental Focus & Drive: L-Tyrosine and stimulant-related ingredients target alertness and concentration.

  • Powerful Muscle Pumps: Citrulline and Arginine compounds support nitric oxide-related pathways.

  • Muscular Endurance: Beta-Alanine supports muscular carnosine production during repeated high-intensity exercise.

  • Strength & Performance: Betaine Anhydrous is included in the formula's performance-focused matrix.

  • 9.6g Pump Matrix: A substantial combination of amino acids and performance compounds.

  • OG Energy Matrix: A specialised 575mg blend developed around the original hardcore pre-workout experience.

BPI Sports 1. M.R.. The OG Supplement Facts


Serving Size: 1 Scoop (13.7g on the supplied Supplement Facts panel)
Servings Per Container: 25
Nutrition Per Serving:

  • Calories – 9

  • Total Carbohydrates – 2g

  • Total Sugars – 0g

  • Potassium – 267mg


Pump Matrix – 9,625mg



  • Beta-Alanine

  • L-Citrulline Silicate

  • L-Citrulline

  • L-Arginine

  • L-Arginine AKG

  • Betaine Anhydrous

  • L-Tyrosine


OG Energy Matrix –575 mggg



  • Caffeine Anhydrous

  • 2-Aminoisoheptane HCl (DMHA)

  • Theobromine

  • Geranium Extract (Stem & Leaves)

  • Guarana Extract (Standardised to 22% Caffeine)

  • Yerba Mate 10:1 Extract

  • Schizandra 10:1 Extract

  • Grape Seed Extract (95% Proanthocyanidins)


Other Ingredients: Citric Acid, Natural and Artificial Flavours, Sucralose, Dipotassium Phosphate, Silica, Maltodextrin and Acesulfame-K.

Ingredient Breakdown


Pump Matrix – 9,625mg



  • Beta-Alanine: A performance-focused amino acid that supports the production of carnosine within muscle tissue. Increased carnosine availability helps buffer acidity during repeated high-intensity exercise, making Beta-Alanine a popular ingredient for muscular endurance.

  • L-Citrulline Silicate: Combines Citrulline with a silicate component. Citrulline participates in Arginine metabolism and nitric oxide-related pathways associated with circulation and muscle pumps.

  • L-Citrulline: An amino acid involved in the body’s production of Arginine. Frequently used in pre-workout supplements to support nitric oxide production, blood flow and exercise-related muscle fullness.

  • L-Arginine: A direct precursor involved in nitric oxide synthesis. Commonly included in pump formulas targeting circulation and vascular response during resistance training.

  • L-Arginine AKG: A combination of Arginine and Alpha-Ketoglutarate used in bodybuilding supplements focused on exercise performance and muscle pumps.

  • Betaine Anhydrous: Also known as Trimethylglycine (TMG), Betaine acts as an osmolyte and methyl donor. It is widely included in strength and power-oriented pre-workout formulas.

  • L-Tyrosine: A precursor to Dopamine and Noradrenaline, neurotransmitters involved in alertness, attention and mental performance.


OG Energy Matrix –575 mggg



  • Caffeine Anhydrous: The foundation of the energy system. Caffeine stimulates the central nervous system, increases alertness and can help reduce perceived effort during demanding exercise.

  • 2-Aminoisoheptane HCl (DMHA): A powerful stimulant-related compound included in advanced hardcore pre-workout formulations. It contributes to the product’s intense stimulation-focused profile.

  • Theobromine: A naturally occurring methylxanthine found in cacao, structurally related to Caffeine. Included as part of the formula’s broader stimulant system.

  • Geranium Extract: A botanical ingredient featured in specialist pre-workout formulas, including products associated with the original high-stimulant era.

  • Guarana Extract: Standardised to 22% Caffeine, providing an additional botanical caffeine source within the energy blend.

  • Yerba Mate 10:1 Extract: A concentrated botanical extract containing naturally occurring methylxanthines and polyphenols, commonly used in energy and focus supplements.

  • Schizandra 10:1 Extract: A concentrated berry extract containing lignans and other bioactive plant compounds. Traditionally used in adaptogenic and performance-oriented formulations.

  • Grape Seed Extract: Standardised to 95% Proanthocyanidins, providing concentrated polyphenols associated with antioxidant and vascular-related mechanisms.


How to Take BPI Sports 1.M.R The OG


According to the product directions, begin with half a scoop to assess stimulant tolerance.
The manufacturer’s full serving is one scoop mixed with approximately 180–240ml of water, taken 15–30 minutes before exercise.
Do not exceed the recommended serving. Avoid combining with other stimulant products or additional caffeine sources.
BPI SPORTS 1.M.R THE OG – ONE MORE REP. UNRELENTING ENERGY. LEGENDARY HARDCORE PERFORMANCE.
Disclaimer:
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any diseases. Always consult with a healthcare professional before starting any new supplement regimen, especially if you have any pre-existing health conditions or are taking other medications.

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BPI Sports 1.M.R OG is a pre-workout formula featuring a blend of pump ingredients, stimulants, nootropics, and botanical extracts. It is the original BPI Sports pre-workout formula, designed for energy, focus, and training performance.

The stimulant profile includes Caffeine Anhydrous, 2-Aminoisoheptane HCl (DMHA), Geranium Extract, Guarana Extract, and Yerba Mate 10:1. This combination of traditional and newer stimulant compounds delivers layered energy and mental drive.

The pump matrix includes L-Citrulline Silicate, L-Citrulline, and L-Arginine AKG. This triple nitric oxide support system enhances blood flow, vascularity, and muscle pump through multiple pathways simultaneously.

Beta-Alanine is included to buffer lactic acid build-up in muscles, delaying fatigue and improving muscular endurance during intense training. Betaine Anhydrous further supports cellular hydration and power output.

L-Tyrosine provides the core nootropic support, helping maintain neurotransmitter levels and mental focus under physical stress. Theobromine contributes to smooth, sustained energy and mood enhancement alongside the stimulant stack.

BPI 1.M.R OG includes Yerba Mate 10:1, Schizandra 10:1, and Grape Seed Extract as botanical support ingredients. Schizandra is a adaptogen that supports endurance and stress resilience, while Grape Seed Extract provides antioxidant support.

Follow the serving instructions on the label and start with a lower dose to assess tolerance to the multi-stimulant content including 2-Aminoisoheptane and Geranium Extract. Do not combine with other stimulant products.

No — 1.M.R OG contains 2-Aminoisoheptane (DMHA) and Geranium Extract, making it suitable only for experienced users familiar with advanced stimulant profiles. Beginners should choose a standard caffeine-based pre-workout first.

Yes — the stimulant-heavy, carbohydrate-free formula with botanical thermogenic extracts makes 1.M.R OG compatible with cutting phases. The energy and focus support helps maintain training intensity during caloric restriction.

BPI Sports 1.M.R OG is available through Cross The Limits, an authorised UK retailer. Orders placed before 4pm are dispatched the same day, with free UK shipping on orders over £89.

BPI Sports

BPI Sports

Founded in 2009 in Florida, BPI Sports is among the most well-known supplement brands worldwide – and, let us say, it’s for a reason. To add to that, it was acquired by Hi Tech Pharmaceuticals in 2023. What comes out when a pioneer R&D powerhouse works with an experienced supplement brand? Exactly what you expect – you get even better supplements. Learn more!