Gals, correct me if i'm wrong.
Fr my understanding, IUI is without the injections, cos some might hv minor prob with ovulation and hence mediaction with clomid might be sufficient. If some nt reacting well to it, injections such as puregon is required n hence the procedure is known as SO-IUI. The procedure is the same except one is without jab, n 1 is with jab.
To me nt neccessary means SO-IUI is more effective but hw the body is reacting. For mine case, i'm reacting well to jus clomid but maybe my prob does nt jus lie in ovulation hence I did nt succeed with it, n therefore i'm gg for IVF.
Hope that helps.