Home Herbs Index J Jalapa (Exogonium purga) (Jalap) AllABCDEFGHIJKLMNOPQRSTUVWXYZ Jalapa (Exogonium purga) (Jalap) Pharmacological action: Anti-phlegmatic and purgative. Medicinal use: Effective in purging the body of mal-humours. Cures constipation, facial paralysis, rheumatism and arthritis, flu and other catarrhal infections.