ɪt wʌz ɪnˈɪʃəli ɛkstɹˈæktᵻd fɹʌmðə fˈʌŋɡəs kˈɔːɹdaɪsˌɛps mˌɪlɪtˈɑːɹɹɪs, bˌʌt kæn nˈaʊ biː pɹədˈuːst sɪnθˈɛɾɪkli.
It was initially extracted from the fungus Cordyceps militaris, but can now be produced synthetically.