Is Drowsiness Caused By Stallion?

back in the end of december i had a few anxiety attacks. my doctor prescribed l-theanine, a natural supplment. Well i also been having trouble with PE so i tried a supplment call stallion 247, but i didnt consult with my doctor. the ingredents are,VITAMIN B6, MAGNESIUM, L-ARGININE, QUERCETIN, EPIMEDIUM, L-THEANINE, GABA, 5-HTP, RHODIOLA ROSEA. I havnt beem taking both just the stallion, but i feel a little different, and i am a little more drowsy then normal. Should i stop taking the stallion