Superlative Rat Tonic was a brand of rat tonic sold at the Magical Menagerie.[2]

In 1993, when Ronald Weasley, Hermione Granger and Harry Potter went to the Magical Menagerie to buy rat tonic for Ron's pet rat Scabbers. The saleswoman gave them a "small red bottle",[1] of what was, presumably, Superlative Rat Tonic.


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