Medallion of Health
A necklace for proof against poison
While wearing this medallion, the wearer is immune to poisons and venom, either brewed or natural. It does not render him immune to the conveyance, such as a knife or needle wound, and it does not make him immune to spell effects, such as a poison cloud.
However, he does gain advantage to save against poison spell effects.
The Medallions of Health wore by those of House Wands include three amethysts on the front, the Wands sigil on the back, and made of gold.