Political parties push for ban on toxic eye drops

Danish political parties are calling for a ban on the toxic preservative benzalkonium chloride (BAK) in over-the-counter eye drops, following criticism from researchers and patient groups.

The preservative, found in an estimated 30–40% of artificial tear products sold in pharmacies and retail chains like Matas, can cause irritation and pain—the very symptoms the drops are meant to relieve. Both the Danish Eye Association and Professor Miriam Kolko, a leading researcher, have demanded a prohibition.

Charlotte Green, deputy chair of the Folketing’s Health Committee and health spokesperson for the Conservative Party, told DR that patients face a “jungle” of options, with a high risk of unknowingly purchasing harmful products. She will urge Health Minister Ida Auken (Social Democrats) to consider a ban upon her return from summer recess.

Enhedslisten (Red-Green Alliance) health spokesperson Peder Hvelplund echoed the call, stating there is “no reason to wait” when safe alternatives exist. The Danish Democrats have also indicated they will question the minister’s inaction.

The Danish Medicines Agency has stated it does not see grounds for a total ban but advises patients to choose BAK-free products when possible and to always review product information leaflets.

DR reported that the Health Ministry has not responded to requests for comment.