Supplement analysis backed by scientific evidence · PT

← All supplements
Limited evidenceGeneral health

Mushroom Coffee

Instant coffee blended with lion's mane, chaga, reishi or cordyceps extracts. The caffeine does what caffeine does; the mushroom doses are usually too small to match any study.

Evidence last reviewed: August 2026

What the science says

  • Lion's mane and cognition Limited evidence

    A systematic review of Hericium erinaceus as a supplement found only a small number of human trials, generally short and small, with inconsistent cognitive results. A double-blind pilot study in young adults reported some effect on speed of performance and subjective stress but was explicitly preliminary.

  • The dose in a coffee sachet Limited evidence

    Human lion's mane trials typically used 1-3 g/day of extract. Most mushroom coffees supply a few hundred milligrams of total mushroom extract per serving, often as an undisclosed proprietary blend, so the studied dose is rarely reached.

  • Chaga, reishi and cordyceps Limited evidence

    Human evidence for chaga is essentially absent, confined to cell and rodent studies of metabolic and kidney endpoints. Reishi and cordyceps have small, mostly low-quality trials that do not support the energy or immunity claims made for these products.

Dosage & safety

Studied doseOne to two sachets daily, typically 50-100 mg caffeine plus a few hundred milligrams of mushroom extract. If lion's mane is the reason you are buying it, a separate 1-3 g/day extract matches the trials better.
SafetyThe caffeine content is real, so the usual limits apply in pregnancy, anxiety, arrhythmia and insomnia. Lion's mane has been associated with rare allergic skin and respiratory reactions. Chaga is very high in oxalate and has been linked to case reports of oxalate nephropathy, particularly with prolonged high intake or existing kidney disease. Reishi and cordyceps may affect platelet function and blood glucose. Mushroom extracts from unregulated suppliers can carry heavy metal contamination.

Scientific references

Where to buy

View on iHerb

Referral link — this site may earn a commission on purchases.

Related in General health