Latin name - Salix alba. Herbal tinctures are made by extracting the herbal constituents of a plant in a mixture of water and alcohol.

Avoid During Pregnancy & Breastfeeding
Herbs taken in theraputic dosages should be checked for safety and use during pregnancy and breast feeding in consultation with a qualified herbal practitioner. This herb should not be used internally during pregnancy unless prescribed by a qualified medical herbalist trained in the appropriate use of these substances. 

Caution:
Hypersensitivity to salicylates (e.g. aspirin)