Favor

I was on my way to the grocery store when a friend texted me about phenphedrine. I haven't encountered that word and don't know what it means. She was asking me to buy phenphedrine for her when I passed by a store that sells it. I am not sure if I can get it as I was in a hurry to go back home. So I texted her back that I won't be able to get it for her. Maybe I'll try next time.