extract

, from three to ten grains; of the

infusion

, from one to two ounces.

Caution

. —This drug should never be given in inflammatory diseases or hectic fever.

720. Astringents

Astringents are medicines given for the purpose of diminishing excessive discharges, and to act indirectly as tonics. This class includes catechu, kino, oak bark, log wood, rose leaves, chalk, and white vitriol.