I guess I don't go out of my way to eat SF before IF. I usually just hope I've eaten enough that day. I will say it sometimes gets me in trouble, but not often. I do eat the apple skin, but I'm planning to switch to apple sauce, because it's less messy and noisy (at work). So I didn't take any last night, I was in a hurry and ate out and forgot it, but I'm going to use the powder this morning. Hopefully it works just as well as the caplets, I can't see why it wouldn't.