Senega

(senf-e-ga) [L.]. The Polygala senega, a plant of the order Poly galeae. Its root (S., U. S. P., Senegae radix, B. P.) contains a bitter principle, senegin or polygalic acid (or polygalin), which is probably identical with saponin. S. is used as a stimulant, expectorant, and diuretic; in large doses it is eme to cathartic. It is chiefly employed in bronchitis and laryngitis, as a diuretic in dropsy, and in amenorrhea. Dose gr. x-xx (0.65—1.3). Extractum senegae fluidum (U. S. P.). Dose rr\x-xx (0.65-1.3). Infusum senegae (B. P.). Dose ft^j (32.0). Syrupus senegae (U. S. P.). Dose f.^j-ij (4.0- 8.0). Tinctura senegae (B. P.). Dose fsjj (4.0). Polygalic acid is employed in doses of from gr. j£— j (0.016-0.065). 574