"Wið fǣrstice" is an Old English medical text surviving in the collection known now as Lacnunga in the British Library. Wið fǣrstiċe [wiθ ˈfæːrˌsti.t͡ʃe] means 'against a sudden/violent stabbing pain'; and according to Felix Grendon, whose collection of Anglo-Saxon charms appeared in the Journal of American Folklore in 1908, "the charm is intended to cure a sudden twinge or stitch, possibly rheumatism that can be due to being shot by witches, elves, and other spirits that fly through the air." Scholars have often sought to identify this as rheumatism, but other possibilities should not be excluded. The remedy describes how to make a salve, but its main interest lies in the unique charm which follows. This describes how the færstice has been caused by the projectiles of 'mighty women' (ða mihtigan wif), whom the healer will combat. The charm also mentions elves, believed responsible for elfshot, and provides the only attestation outside personal names of the Old English form of the name of the old Germanic gods, known as the Æsir in Norse mythology.
As with many old Anglo-Saxon charms, it is presumed that physical gestures were intended to accompany the recitation of the text. In this case, the "Wið færstice" is intended to be accompanied by boiling feverfew, red dead-nettle grown in grain, and plantain, then boiling it all in a bowl of butter. A knife is dipped into the potion and then rubbed against the source of pain. Despite the popular use of these herbs in forms of remedial healing, the use of these plants may have been more symbolic than practical. Many old Anglo-Saxon charms draw upon the symbolism of both pagan traditions as well as ancient Christian traditions, and the use of plants in the texts were likely related to these religious references.
