What is "vigroids"

Vigroids (formerly Nigroids) was the brand name of a liquorice sweet. The small black pellets were particularly marketed as an expectorant lozenge for singers, using the slogan "for clarity of voice". The product was manufactured by Ernest Jackson & Company Ltd of Crediton in Devon, England a subsidiary of Kraft Foods.

The principal ingredient of Vigroids is liquorice block juice. The company warns that licorice can raise blood pressure, and that those with a history of hypertension should not take too many. They suggest limiting consumption to 10 per day. No sugar is used. Small quantities of other flavourings such as menthol, eucalyptus and peppermint are added to help the pellets act as a breath mint.