Pre-workouts: the category that ends the most careers

This site says repeatedly that pre-workouts are the highest-risk category. It has never explained why, and the number behind it is more specific than most people expect.

The study that settles the argument

A national anti-doping programme reviewed 18 years of its own doping controls. Across that period there were 192 analytical anti-doping rule violations.

In 49 of them, roughly a quarter, the athlete claimed a supplement was the source. Claiming it is easy.

Evidence supported the claim in 27 cases, which is 14 percent of every violation in 18 years.

Read that again. Not "supplements are risky". One category, and one substance inside it, accounts for most of the cases where a positive test was genuinely traced to something bought legally.

Why this category and not others

Three things stack, and each multiplies the last.

Fifteen ingredients instead of one. Every named ingredient is another supplier, another raw material, another opportunity for something undeclared to arrive. Plain creatine has one point of failure. A pre-workout has 15.

The product is supposed to feel like something. Buyers judge a pre-workout by whether it hits. That creates a commercial pressure which does not exist for protein powder, and the cheapest way to make a product hit is a stimulant nobody declared.

Proprietary blends. Where the label gives a blend rather than each ingredient at its dose, you cannot tell how much of anything you are taking, and neither can anybody checking on your behalf.

A systematic review of undeclared substances across the supplement market found roughly 9 to 15 percent of tested products contaminated, and identified pre-workout, weight-loss and muscle-building products as where it turned up most often.

The substance worth knowing by name

Methylhexanamine, sold as DMAA, is the compound in 16 of those 27 cases. It is prohibited as a stimulant.

It sat in mainstream pre-workouts, sold openly in ordinary shops, for years. Its successor DMHA has followed the same path, and regulators have issued warning letters to sports nutrition companies over both, specifically because they appeared in finished products without appearing on the label.

That is the shape of the risk. Not a criminal operation. A normal product on a normal shelf, containing something the label did not mention, bought by somebody with no reason to suspect it.

Does any of it work

Separate the question, because the answer differs by ingredient.

Caffeine works at sensible doses, with good evidence. Beta-alanine works for repeated high-intensity efforts, over weeks rather than acutely.

Creatine works, though it does nothing acute and has no business being in a pre-workout at all.

What is much thinner is evidence for the blends themselves as products. Most of what a pre-workout does that you can feel is caffeine, and most of the rest of the label is there to justify the price.

Which produces an uncomfortable comparison. You can buy caffeine and beta-alanine as single-ingredient products, batch-tested, for less money, with 2 points of failure instead of 15, and get the effect that has evidence behind it.

If you are tested, what to actually do

The safest version of a pre-workout is not taking one, and I would say that to any fighter under testing.

If you are going to anyway, these are not negotiable.

• Batch-tested only, with your batch number confirmed on the certifier's register rather than the brand's website. A serious programme screens for hundreds of prohibited substances, and that screening is the entire product you are buying.
• No proprietary blends. If the label will not give the dose of each ingredient, you are not in a position to check anything.
• Nothing bought abroad on a camp, from a gym, or on the recommendation of a training partner who is not tested.
• Keep the tub, the receipt and the batch number. If a question ever arises, that chain is your case.

Before you close this

Every category on this site carries some risk, and I have tried to describe each proportionately.

This one differs in degree rather than in kind. It shows up most often when the source of a positive test is actually traced. It delivers the least that could not be bought more safely elsewhere.

And it is the one fighters buy with the least thought.

If you take one thing from this page: the product you reach for before hard sessions is statistically the most likely thing in your bag to end your year.