Hypersensitivity reactions to Gerovital.

Procaine chloride, which was a common cause of allergic reactions in earlier years, has lost importance as a contact allergen because its use for local anesthesia has ceased. Recently, we have seen hypersensitivity reactions in three patients after the use of Gerovital, which is known to contain procaine chloride. A word of warning is warranted against indiscriminate use of Gerovital, particularly of its topical preparations.