Positives

• One patient reported that after four days on Lion's Mane she had a single remarkable day in which she walked 6,000 steps "with no symptoms and no PEM" — though the benefit proved temporary and did not recur despite continued dosing Phoenix Rising.
• One ME/CFS patient taking 1 gram of Lion's Mane reported that skin and nerve burning eased by roughly 50% within half an hour of the first dose, and by day three described the sensation of brain swelling as being down about 80% with reduced anxiety and improved mood Phoenix Rising.

Negatives

• That same patient at 1 g three times daily developed hives with worsening symptoms by day four and had to discontinue — the early benefits did not persist at higher doses Phoenix Rising.
• A third patient who took a heaped teaspoon of Lion's Mane powder described an unusual "mental numbness" with distant-hearing sensations ("like landing in an aircraft"), a feeling of being mentally remote from the world, and reduced sociability during the experience Phoenix Rising.

Hurdles & Side Effects

• Lion's Mane remains under-researched in humans for side-effect profile, anecdotal adverse reactions (hives, dissociative feelings, mood changes) do not always resolve when the supplement is stopped, and individual response ranges from dramatic benefit at 1 g per day to symptom flare at the same dose Phoenix Rising.