Imodium

This medicine contains the active ingredient loperamide hydrochloride, which is a medicine used to treat diarrhoea. Loperamide works by slowing the muscular contractions of the intestine and so is termed an antimotility medicine.
Loperamide acts on opioid receptors that are found in the muscle lining the walls of the intestines. By acting on these receptors, loperamide reduces the muscular contractions of the intestine (peristalsis) that move food and faecal matter through the gut.
Loperamide therefore reduces the speed at which the gut contents are pushed through the intestines. This allows more time for water and electrolytes to be reabsorbed from the gut contents back into the body, and results in firmer and stools that are passed less frequently. Loperamide is therefore used to treat acute (sudden and short-lived) episodes of watery diarrhoea, and can be bought without a prescription for this purpose.
Loperamide can also be used to control chronic (long-term) diarrhoea, however it should only be used for this purpose on the advice of a doctor. It should only be used to treat diarrhoea associated with irritable bowel syndrome on the advice of a doctor.

Adult dosage: Take 2 caplets initially, followed by 1 caplet after each loose unformed stool is needed. Maximum of 8 caplets per day. If diarrhoea persists beyond 48 hours see your doctor.

Lopermide hydrochloride 2mg
Should you have a fever or notice blood in your stools consult your doctor before using Imodium. Do not take more than 8 caplets within 24 hours. As with most medicines, do not use in or lactation except on a doctor's advice. Do not give to children under 12 years of age.