Running has been one of the most popular sports for years, but recently, natural supplements for runners have gained significant traction among those looking to improve performance, speed up recovery, and care for their health holistically.
In this sport, endurance, energy, and injury prevention are key. Choosing the right supplementation can make a massive difference. However, not all products are equal, and not all runners have the same needs. It is essential to understand what to look for before adding supplements to your routine and which natural options are most effective for boosting your running performance.
What to Consider When Choosing Running Supplements
Running subjects the body to a very specific type of stress: repeated impact, sustained aerobic demand, electrolyte loss, and an accumulated load that, without proper recovery, eventually takes its toll. Supplementation makes sense when it responds to this concrete reality, rather than being chosen by habit or simply following what the person training next to you uses.
Three criteria should guide your decision:
Training Volume: A runner clocking 40 km a week has different needs than someone doing two 8 km runs. The higher the load, the greater the depletion of mineral reserves, the higher the systemic inflammation, and the more pressure on the nervous system.
Your Actual Goal: Performance, recovery, and general health aren't always covered by the same compounds. Someone training for a marathon needs to prioritize energy efficiency, while someone running to de-stress who sleeps poorly might need to focus on sleep and cortisol first.
Product Quality: In the natural supplement market, quality differences are often hidden. For medicinal mushrooms, the distinction between fruiting body extract and mycelium on grain is crucial. The former concentrates the active compounds; the latter dilutes them with starch from the substrate. This is not a minor detail.
Best Natural Supplements to Improve Running Performance
Creatine with Lion’s Mane
Creatine is the performance supplement with the most scientific backing. In a running context, its utility is more nuanced than in strength sports: it doesn't just "build muscle," but rather improves recovery between intense efforts, sustains power in the final stages of a race, and reduces post-session muscle damage.
Combining it with Lion’s Mane adds a dimension that creatine doesn't cover: the cognitive axis. Running well isn't just about legs. Pacing, reading your effort, and the mental management of those final miles depend on a nervous system that functions well under fatigue.
Some formats include probiotics, which is logical: high doses of creatine can cause gastrointestinal irritation. Protecting your absorption channel is a key part of the strategy.
Lion's Mane
Hericium erinaceus has a specific mechanism of action that distinguishes it from other adaptogens: it stimulates the production of NGF (Nerve Growth Factor) through erinacines and hericenones. For a runner, this translates into greater mental clarity during exertion, better neuromuscular coordination, and faster cognitive recovery after long sessions.
It is especially useful for those who balance running with a high-demand professional life. A runner who heads out at 6:30 AM after a stressful week doesn't just have tired legs; their nervous system is under pressure. Lion's Mane works precisely at that intersection.
The effects consolidate after four weeks of continuous use. It is not an acute dose nootropic; it is a sustained investment in the quality of neurological processing. And as always with mushrooms: fruiting body extract, no mycelium on grain.
Before integrating any supplement into your routine, we recommend that you read about its contraindications. In this case, we recommend our blog article that addresses the points to consider before taking Lion's Mane.
"I started taking Lion's Mane three months ago while preparing for my first marathon. I didn't expect the difference in concentration during long runs to be so noticeable. The head holds up much better when the body is already at its limit." — Laura, 38.
Reishi
In the context of running, Reishi has a clear focus of use: fatigue. Not acute post-training fatigue, but the accumulated fatigue that appears when the body has been chaining sessions for weeks without fully recovering.
Ganoderma lucidum acts on the central nervous system and on the quality of deep sleep, which is where real recovery occurs. Its triterpenes have effects on cortisol and the stress response, and its beta-glucans modulate immune function, which tends to be suppressed in high-volume runners after long sessions.
For the runner who notices that their legs are not responding as they should, who wakes up without having rested, or who carries a diffuse sense of tiredness during the week, Reishi is the most logical supplement to incorporate. It does not accelerate performance directly; it restores the conditions so that performance is possible.
To learn more, we recommend taking a look at our guide on when and how to take Reishi.
Magnesium
Running depletes magnesium through two pathways: sweat and the increased energy consumption required by muscles during exertion. A subclinical deficiency—which doesn't appear in standard blood tests until it is pronounced—manifests in ways recognizable to any runner: night cramps, non-restorative sleep, an increased sense of muscle fatigue, and an irritability that isn't always attributed to its true cause.
Magnesium participates in ATP synthesis and post-contraction muscle relaxation. Without adequate levels, recovery between sessions is prolonged and the risk of overuse injuries increases.
The form of the supplement matters. Glycinate has high bioavailability and a calming effect on the nervous system, making it especially useful at night. Malate has an affinity with the energy cycle and fits better in a daytime context. Oxide, the most common in cheaper formats, has significantly lower absorption.
Iron
Iron is the most frequently underestimated mineral in a runner's protocol and the one with the greatest consequences when lacking. Its function is direct: it is part of hemoglobin, the protein that transports oxygen from the lungs to the muscles. Without sufficient iron, VO2 max drops, fatigue sets in earlier, and performance progressively deteriorates even if the training is correct.
Runners have a higher-than-average rate of iron loss for several reasons: the repeated impact of the foot against the ground destroys red blood cells (foot-strike hemolysis), sweat eliminates a fraction of the mineral, and frequent gastrointestinal micro-inflammations in endurance runners reduce its absorption.
Women of childbearing age are the group at highest risk of deficiency, but men with high training volumes are not exempt. A blood test that includes ferritin, not just serum iron, is the only way to detect it accurately.
Iron supplementation should always be done with a prior blood test. Excess has negative consequences and there is no benefit in supplementing without a confirmed deficiency.
| Supplement | Primary Benefit | Best Time to Take |
| Creatine + Lion’s Mane | Muscle recovery & cognitive performance | Pre or post-workout |
| Lion’s Mane | Cognitive function, NGF, mental fatigue | Morning (with or without food) |
| Reishi | Accumulated fatigue, deep sleep, immunity | Night |
| Magnesium | Cramps, muscle recovery, sleep | Night (Glycinate) / Day (Malate) |
| Iron | Oxygen transport, endurance, fatigue | Morning (on empty stomach or with Vit C) |
Bibliography
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Mori K, et al. Improving effects of the mushroom Yamabushitake (Hericium erinaceus) on mild cognitive impairment... Phytother Res. 2009.
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Burden RJ, et al. Randomised trial of intravenous or oral iron supplementation in female soldiers during military training. BMJ Open. 2015.
