Gonal f or follistim

Hi Ladies, I’m new to <a href="https://glowing.com/glow-fertility-program">ivf</a> and the cost for out of pocket meds is crazy!! I’m wondering if any of you had experiences with gonal f vs follistim. Some pharmacies have gonal f for cheaper and some follistim and I’m wondering how it is doing either one/if they are the same etc. nervous to take all of these meds!!!