Cordyceps and other endurance aids

Does anyone know where i can get this? Also any info on dosing?

Availability of bulk powder / capsules.

Also any other supps people can recommend for increasing endurance and oxygen capacity (strictly supplements please)

All help greatly appreciated.

I always used to be a fan of citrulline malate for my long cardio sessions.

Pretty sure it will be available in bulk powder form but can be expensive and taste isnt great.

Dont think there will be any bulk suppliers of cordyceps in the UK but maybe some in USA.

Ive used CM, its really expensive though over here. I got a 500g tub of it when the dollar was strong from a bulk supplier in the US. Not really noticed much from it bar some pumps and some energy when im low carbing. Nothing on the endurance front, i get better results for endurance from beta Alanine.

bump for any more opinions

I was part of a study on cordyceps when I was an Msc student. Wasn't running it just a subject. I believe there was not effect on any aerobic performance measure. I thought the general concensous was it was not an effectr supp? Mind you, not exactly up and all research done in that area.