In Germany almost nothing is OTC, much less than in the US. And most meds are quite expensive, which is because almost everybody has health insurance, so noone really cares for the price...

In the Netherlands are no OTC opiates.

In Swiss you can get some codeine/apap formulations, same in the UK.

But pure codeine or even DHC is not available OTC anywhere, some spanish pharmacies are said to sell it w/o prescription, but that's not officially.