Lead Contamination in Calabash Chalk Prompts FSAI Warning to Irish Consumers

Dublin, Ireland — 07 May 2026

The Food Safety Authority of Ireland (FSAI) has issued a critical advisory, urging pregnant and breastfeeding women in Ireland to avoid consuming calabash chalk. This warning stems from confirmed findings of dangerously high lead levels within the product, commonly known by names such as calabar chalk, nzu, and mabele. Traditionally used as a remedy for morning sickness, its consumption poses severe health risks, particularly to unborn babies and infants during critical developmental stages.

Lead, a cumulative toxic metal, can transfer from mother to foetus during pregnancy and to infants via breastfeeding. The FSAI highlights its detrimental impact on the developing brain, which can lead to profound and lasting health effects. The product, originating either as naturally occurring fossilised seashells or an artificial mix of clay, sand, and wood ash, is imported into Ireland and predominantly sold in ethnic shops. A significant compliance issue identified is the prevalent lack of clear labelling and consumer information, exacerbating the risk to consumers.

Mr Greg Dempsey, Chief Executive of the FSAI, underscored the gravity of the situation, stating that "High levels of lead in calabash chalk is a serious public health concern," capable of severely impacting child development and, in extreme cases, proving fatal. The FSAI advises immediate cessation of use for anyone consuming the product and recommends medical consultation for those who have ingested it and feel unwell.

What this means for Ireland

Irish retailers, particularly smaller ethnic food outlets, must immediately audit their stock for calabash chalk and cease all sales. Non-compliance carries significant penalties under FSAI regulations. Brand owners importing niche traditional products into Ireland should review their supply chain diligence, ensuring ingredients are free from heavy metal contamination to avoid product recalls and reputational damage. This incident underscores critical gaps in import control for products with 'limited labelling', prompting heightened scrutiny of similar cultural food items. Manufacturers and distributors must ensure all products meet EU and Irish food safety standards, particularly concerning contaminants, or face regulatory intervention and commercial disruption.

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