Codeine and paracetamol.
NEUROtiker, Benjah-bmm27
<a href="//commons.wikimedia.org/wiki/File:Paracetamol-skeletal.svg" title="File:Paracetamol-skeletal.svg">File:Paracetamol-skeletal.svg</a> <a class="external free" href="https://commons.wikimedia.org/wiki/File:Codein_-_Codeine.svg">https://commons.wikimedia.org/wiki/File:Codein_-_Codeine.svg</a>