The rational treatment for constipation : Petrolax preparations are an ideal form of medication.

Galleries and Reading Room

Library

Shop

Café

Due to essential system maintenance, online requesting will be unavailable from 9pm until midnight on Tuesday 21 April. You can still search the catalogue as usual. We apologise for any inconvenience.

We're running paid user research studies to improve Wellcome Collection online

Take part in research

<p>Blotter issued by C. R. Harker Stagg & Morgan, Ltd advertising the laxative Petrolax, containing paraffin liquid.</p>

The rational treatment for constipation : Petrolax preparations are an ideal form of medication.

Licence and re-use