Anodyne

Anodynes and Analgesics (Gr. not pain, without pain, cures pain) are sedative nervines which relieve pain by either depressing sensory centers or impairing nerve-fiber conductivity: opium, morphine, belladonna, hyoscyamus, stramonium, coca, cocaine, hop, antipyrine, acetanilid, acetphenetidin [Culbreth1927, p 40-41].

Anodynes are medicines which relieve pain [Brown1878; Meyer1932].

Pain reliever [anonymous]/

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  Nervous System

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  Couch Grass (Elymus repens)
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  Kava (Piper methysticum)
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  Onion (Allium cepa)

[Brown1878] Oliver Phelps Brown. The Complete Herbalist; or the People Their Own Physicians. Jersey City, NJ (1878). Online Reprint.

[Culbreth1927] David Marvel Reynolds Culbreth. A Manual of Materia Medica and Pharmacology, Seventh Edition. Philadelphia, PA: Lea & Febiger (1927). Online Reprint.

[Meyer1932] Joseph Ernest Meyer. The Herbalist and Herb Doctor. Hammond, IN: Indiana Botanic Gardens (1932) Online Reprint.