Imodium Liqui Relief Loperamide Capsules (12). Imodium LiquiRelief Capsules is a medicine which is used to treat sudden short lived attacks of diarrhoea in adults and children aged 12 years and over.. Contains loperamide which helps to reduce diarrhoea by slowing down an overactive bowel to its normal rhythm, which helps the body to absorb water and salts from the bowel.