Question: what ingredients are in zyrexin?
Answer: L-Arginine. L-Arginine is a nonessential amino acid that, upon absorption to your system, converts to nitric oxide. ... 
Epimedium Extract (Horny Goat Weed) ... 
Yohimbe Extract. ... 
Xanthoparmelia Scabrosa Extract. ... 
Ginkgo Extract. ... 
Cnidium Extract. ... 
Velvet Bean Extract. ... 
Butea Superba Extract.