Is lion's mane banned in rugby?

By Tom Francis·Updated 2026-09-03·3 sources·Editorial policy

The direct answer

Lion's mane, Hericium erinaceus, is an edible mushroom. It is sold as food, cooked and eaten, and it is not on any prohibited list in rugby union or rugby league at any level.

A player asked whether lion's mane is banned can answer no with confidence. The rest of this page is about the two questions sitting behind that one, which are whether a particular product is safe for a tested athlete and what the extract can actually claim.

Where the risk sits in this category

Not in the mushroom. It sits where it sits for every supplement, in cross contamination during manufacture on shared equipment.

Mushroom extracts carry one additional consideration worth knowing: the category has a reputation problem around what is actually in the capsule, because mycelium grown on grain can be milled with the grain and sold by total weight. That is an honesty problem about content rather than a doping one, and it is a good reason to prefer a product that states its extract ratio.

The claim position, which is separate

Whether something is permitted and whether it does anything are different questions, and lion's mane answers them differently.

It is entirely permitted. It also has no authorised health claim of any kind in the UK, for focus, memory, brain fog, nerve health or anything else. A player asking whether they are allowed to take it should hear yes, and a player asking whether it will help them should hear that no claim exists and the research is early.

Nootropics as a category

Lion's mane sits in a category where the risk profile varies enormously. A single ingredient mushroom extract is at the safer end. Multi ingredient nootropic stacks containing a dozen compounds, some of them pharmaceutical analogues, are at the other.

Several substances marketed in that space are prohibited in sport or are unlicensed medicines, and a player treating all nootropics as equivalent because lion's mane is fine is making a mistake worth naming.

Strict liability

The player is responsible for what is in their body regardless of where it came from. That applies at community level in both codes and it does not soften because a product looked reputable or came from a teammate.

Futuro Labs Lion's Mane is UK made to GMP standards and is not batch certified for sport, and the same is true of Futuro Labs Magnesium Glycinate, Futuro Labs Omega 3 Fish Oil and Futuro Labs Marine Collagen. A tested player should be choosing certified products.

What a player should actually do

1. Decide honestly whether you could be tested at your level.
2. If yes, restrict yourself to batch certified products and check the batch number.
3. If no, judge a mushroom extract on whether it states an extract ratio at all.
4. Avoid multi ingredient nootropic stacks, which are the genuine risk in this category.
5. Keep the packaging while you are taking anything.
6. Remember that permitted and effective are different questions, and lion's mane answers them differently.

Mushroom supplements and what actually goes wrong in the category

The problems in the mushroom extract category are almost entirely about content rather than about prohibited substances, and they are worth knowing because they affect what a player is actually buying.

Mycelium grown on a grain substrate can be milled together with the grain and sold by total weight, so a large milligram figure can be mostly rice. Mushroom equivalent figures quoted without an extract ratio cannot be converted into anything. And products naming neither the part of the mushroom used nor a standardisation marker have told a buyer almost nothing.

Futuro Labs Lion's Mane states a 5 to 1 extract ratio behind its 1500mg mushroom equivalent, which implies roughly 300mg of extract, states 50 percent polyphenols as a standardisation marker, and declares brown rice flour as a bulking agent rather than claiming zero fillers. At 13p a day that is a well specified product with no health claim attached to it, which is an unusual combination and an honest one.

Where to go next

• Lion's mane for rugby playersThe honest position on claims and research.
• Futuro Labs Lion's Mane: the full labelExtract ratio, implied extract weight, bulking agent and cost per day.
• Banned substances and batch testingHow contamination happens and what certification covers.

Questions players ask

Sources

• UK Anti-Doping, supplements
• World Rugby anti-doping
• EFSA register of nutrition and health claims