Deadly Nightshade Potion Bottle Was £8, now £5 £5.00 Out of Stock Deadly Nightshade - Atropa Belladonna. Element: Water. For witches, Belladonna is the supposed main ingredient allowing broomsticks to levitate and perhaps it did, even if only in their hallucinations. Consumption of 2 to 5 berries by a human adult can be lethal. The bottle is 10cm long including cork, and 3cm wide. I have sealed the bottle for your own protection, as this herb can be lethal when misused. Handling Deadly Nightshade is at your own risk and I'm not responsible for misuse. This bottle is for decoration purpose only. However, a great altar piece or for a spooky apothecary cabinet!