What does 1MR mean?
In supplement shopping, 1MR or 1.M.R. refers to BPI Sports’ One More Rep pre-workout family. It should not automatically be rewritten as 1RM, the abbreviation for one-repetition maximum in strength training. Those searches lead to different questions: one concerns a supplement label, the other a lifting measurement.
BPI has used the name across several versions. A review of one generation does not establish the ingredients or stimulant content of another.
What the current 1MR OG listing shows
BPI’s 1MR OG product page and displayed Blue Raspberry facts panel specify one 13.7 g scoop and 25 servings. Two combined amounts dominate the formula:
- A 9,625 mg Pump Matrix containing beta-alanine, citrulline ingredients, arginine ingredients, betaine and tyrosine.
- A 575 mg OG Energy Matrix containing caffeine anhydrous, 2-aminoisoheptane HCl, theobromine and several botanical ingredients, including guarana and yerba mate.
These are blend weights, not individual doses. In particular, 575 mg must not be reported as caffeine. The inspected panel does not establish a separate caffeine total. It also does not let readers verify a specific citrulline or beta-alanine amount.
The DMHA warning matters
The energy blend’s 2-aminoisoheptane entry is a significant concern. The FDA lists 2-aminoisoheptane among names for DMHA and considers DMHA an unsafe food additive; it considers dietary supplements containing it adulterated. This ingredient issue is more important than treating OG as simply a stronger caffeine product.
The listing is not evidence of regulatory approval, and taking a smaller scoop does not resolve the ingredient concern. This guide does not recommend using a DMHA-containing product. If your container’s ingredients differ, assess that actual label rather than assuming the website and every batch are identical.
OG and Vortex are separate products
The manufacturer’s 1MR Vortex page describes a 50-serving, beta-alanine-free product. Those details cannot be transferred to OG. BPI’s 2022 introduction of another 1MR version further illustrates why an undated “1MR formula” is not enough.
Before making a comparison, identify the full product name, country, serving weight and photographed ingredient panel. Avoid relying on old review scores, “original formula” wording or a retailer’s guessed caffeine number. A clearly disclosed, legally marketed formula makes a more useful starting point for evaluating a pre-workout.
Product pages and existing offers
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Sources and review notes
Reviewed October 12, 2026. Manufacturer reference. Manufacturer reference. FDA supplement guidance. Manufacturer reference. Manufacturer reference. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
