Fergus Fungal Budge was a fungicidal product that treated ringworm infections on the feet. It was available in three sizes, suggesting that it was not a potion, but some sort of medicated dressing. An advertisement for this product appeared in the Daily Prophet in 1996. Ronald Weasley owned this product.
- Harry Potter and the Order of the Phoenix (film) (Mentioned in a newspaper)
- Harry Potter and the Order of the Phoenix (video game) (Mentioned in a newspaper)