I stack Lions Mane, Turkey Tail, and Reshi for immune system support. Did a lot of prior research into medicinal benefits of fungi supplements and was as always skeptical. This was in mid 2019 just prior to the pandemic.
I have a life long predisposition to respiratory infection and flu. Annual flu immunizations help but I typically contracted 2-3 chest/head colds of moderate to long duration every year. As Covid went rogue followed by lockdown I adjusted dosages slightly as a booster.
Fast forward to 2023. I received every Covid vaccine and boosters as they became available. Covid being a respiratory influenza I'm at higher risk so not leaving anything to chance.
I don't endorse any sellers product until I'm 100% convinced it meets and/or exceeds expectations. My personal experience is anecdotal. In the nearly 4 years since beginning the program I have not suffered a single cold or contracted flu despite exposure to those who are ill with one or the other. I attribute this to the Doublewood supplement regimen, Lions Mane, Reshi, and Turkey Tail.
Manufactured and sourced in the US, third party testing for purity and ingredients, Doublewoods is my go to for Mushroom based supplements.