Betaine (TMG): The Pre-Workout Ingredient Nobody Talks About
Short answer: Betaine, also called trimethylglycine or TMG, is a compound originally from beets that has been studied for power output and muscle endurance. Research generally uses about 2.5 grams a day. It is one of the more evidence-backed pre-workout ingredients, and also one of the most commonly underdosed. The number on the label is the whole story. Compare the doses.
Citrulline and caffeine get all the attention. Betaine does the quiet work in the background and rarely makes the front of the label, even though the research behind it is stronger than a lot of flashier ingredients.
What betaine is
Betaine is a compound your body makes and also gets from food, first isolated from sugar beets. In supplements it is usually listed as betaine anhydrous or trimethylglycine (TMG). It is not a stimulant. It works through different pathways than caffeine, which is why the two sit side by side in a well-built formula.
What the research looks at
Betaine has been studied mostly for training performance:
- Power and strength. Several studies have looked at improvements in power output and strength over a few weeks of use.
- Muscle endurance. Some research points to more reps or work completed before fatigue.
- Body composition. A handful of studies have explored effects on body composition alongside training, with mixed but interesting results.
The effects are meaningful for a supporting ingredient, but they show up over weeks of consistent use, not in a single session.
At a glance: Betaine is one of the better-researched pre-workout ingredients. Studies use about 2.5 grams a day. Many products use a fraction of that, so the dose on the label is what separates a real inclusion from a sprinkle.
The dose problem
Here is where most products fall short. The studied amount is roughly 2.5 grams. Plenty of labels list betaine, then use 500 milligrams or hide it inside a blend so you cannot tell how much is there. A trace amount lets a brand claim the ingredient without paying for the dose that does the work. This is exactly why the number needs to be printed.
FAQ
Is betaine the same as beta-alanine? No. They sound alike but are different ingredients. Beta-alanine causes the tingle and is studied for muscular endurance. Betaine does not tingle and is studied for power.
How much betaine should be in a pre-workout? Research generally uses about 2.5 grams a day.
Is betaine a stimulant? No. It will not give you energy or keep you up.
The Valenco take
An ingredient is only as honest as its number. When a formula of ours uses betaine, the amount is printed on the panel, not buried in a matrix. See the pre-workout lineup and read the labels, or check the real numbers on our lab results page. valenco.org.
These statements have not been evaluated by the Food and Drug Administration. No product mentioned is intended to diagnose, treat, cure, or prevent any disease. This article is general information, not medical advice. Talk to your doctor about your own situation.