Styptics. These may act either by causing clot formation in the cut arteries, or by causing the retraction of their edges. In the latter class are included such drugs as hydrastine  and adrenaline.

The disadvantage of using these drugs lies in the fact that secondary hemorrhage is possible when their constrictor action is over. The styptics causing clot formation are therefore to be recommended. They should be non-irritating, antiseptic, and styptic, at the same time. Such a preparation is practically unknown.

Peroxide of hydrogen  on a pledget of cotton, placed over the bleeding area, may effect a clot formation.

The U.S.P. liquor ferri subsulphatis, better known as Monsel's solution, is the best and most effective styptic that we have. Monsel's solution, however, is not antiseptic and entrance of bacteria into the wound is possible, unless, it is applied with a sterile applicator or is dropped directly upon the wound from the bottle.

The U.S.P. tincture of iodine  in equal parts of water, applied to the bleeding area may, besides sterilizing it, stop bleeding.

Should none of the above effect a stoppage of the bleeding, other means must be sought. A bit of sterile gauze pressed quite firmly against the area, should next be tried. If this fails, a wooden applicator, prepared with Monsel's solution may be employed. A cotton wound applicator, unless dipped into a strongly antiseptic solution, contains millions of bacteria from the fingers. The use of the ancient styptic stick of alum, copper or silver is discountenanced everywhere as uncleanly.