Mustard Seed, Yellow, Sinapis alba, Brassica hirta (syn.)
Common hot yellow mustard seeds. Used for prepared mustards, pickling, marinades, sauces, and salad dressings. Traditionally used to make mustard plaster.
hyperemic (increases blood flow)
Use of the herb is contraindicated in those with gastrointestinal ulcers or inflammatory kidney diseases.
Sneezing, coughing, and possibly asthma attacks can result from breathing the allylisothiocyanates that arise from the poultices. Eyes should be protected as the vapours can cause irritation.
Long-term use or frequent applications of the poultices can cause blistering. Therefore, they should not be left on for any longer than thirty minutes.
Mustard should not be administered to children under six.