Rosin/ Colophony
Podophyllin
Eriodyctyol
Maschitic acid
Yangonin and Methysticin
Hashish
Turpentine
Balsam of Copaiba
Capsaicin
Storax/ Styrax
Peruvian Balsam
Tolu Balsam
Benzoin
Nicotine
Arecholine
Lobeline
Ephedrine
Colchicine
(-) Cathinone
Mescaline
methylxanthines
phosphodiesterase inhibitors
kola nuts
thea
cacao
veratridine