One hundred c.c. represent 10 gm. of the drug in approximately 65 per cent. of alcohol.

Externally it is useful as a local application for the relief of neuralgic pain.

Dosage: 0.2 c.c. or 3 minims should be given hourly until the desired effect on the pulse is secured. Locally the tincture may be applied over the affected nerve, or a liniment containing 10 per cent. of the tincture may be prescribed. Application to mucous membranes should be carefully avoided. The local application of the tincture is dangerous, as too much absorption may occur.