If you're a guest in someone else's home, don't go through all their drawers looking for money. If you see a turtle, don't stomp on it. If you need to escape from a bunch of armed dudes, don't leave a nudie mag on the ground and expect them to hunker down and leer at it while you make your escape. Video games teach us all kinds of lessons that would be unwise to carry over to real life - but You'll feel better if you just use X healing item might be the most deadly of all.
Seriously, it's a wonder that video game characters are still standing after all the unrefrigerated poultry they consume, pills they pop, and anomalous drugs they inject into their veins. Can you imagine what would happen if you, a mortal creature of flesh and bone, tried to nourish yourself with these pick-ups? Well, you don't have to - I already did. Click on for some cautionary tales of healing items that would totally, totally kill you in real life.