Got a bag of mystery fruit

Kroger has a bargain shelf. There were several bags of fresh citrus. I didn't know if they were oranges or grapefruit. I got 4 for .99 cents, thinking it was a good price for either. I cut one this morning, and they are pink grapefruit. I'm not supposed to eat grapefruit because something in grapefruit can react with BP meds, and lower your BP more. I didn't feel a loss, because I've never liked grapefruit. But this morning, I thought, well, it's cut, and I'll see if my taste has changed. I ate half with no sugar, because sugar never helped before. With or without sugar, still a hard no. And I bet grapefruit lowers your BP because you go into shock from the flavor.