So its a bottle, not a blister pack?

wild.

I know that blister packs are a pain, but in the places that they are introduced they reduce pill based suicide by up to 40%[1]

Sorry I should have been more clear about the 4g, that was for paracetamol. I have no idea what it would be for naproxen

[1] https://pmc.ncbi.nlm.nih.gov/articles/PMC526120/