Rhus toxicodendron [Rhus-t]
It generally follows that a case of sciatica that is always worse in wet weather is cured by Rhus tox. 3, two doses a day, until better. Most cases are worse in wet weather.
Viscum album [Visc]
This Druidical remedy is of use in sciatica, in very painful cases, shifting pains. The dose may be 5 drops of the tincture, though it may also do better in the d3 potency.