Botanical Index No. 1103

White Mustard

sinapis alba

Safety & Contraindications

Class 2d. Ingestion of large quantities can cause irritant poisoning. Commission E reports seed permitted for external use only. Contraindications: children younger than 6 years and those with renal disease. Even an external poultice should be limited to 5–10 minutes pediatrically, 10–15 minutes for adults, less for sensitive patients. Plaster for 15–30 minutes can cause severe burns. Adverse effects: skin and nervous damage. Should not be used for more than 2 weeks. Contraindicated in GI ulcers and nephrosis. Overdoses cause GI distress. Long-term dosing may cause nerve damage. “Hazards and/or side effects not known for proper therapeutic dosages”. Hyperthyroidism with goiter traced “to the use of the isothiocyanates in mustard”. Delaneyite nitpickologists will doubtless clamber to put the same goitrogenic warning on all members of the mustard family, as well as papaya, caper, and nasturtium.

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