I have heard that the pill can change your curl pattern, but I'm not sure if it'll make it totally straight. Your cut and what products you're using are probably a factor as well. I'm thinking your hair may become wavy instead...

I'm no expert, so I hope there are more responses to this question!
2c/3a/3b curls, waist length
Cleansers:Body Shop Honey 'Poo, V05 Co
Conditioners:GVPCB/AOHR/HSHPumpkin

DT/Treats:Aphogee Protein Treat/GVP K-Pak/EVOO
Leave-ins/Stylers:KCKT/KCCC/KCGP