take a couple of Panadol

An obscure question… Why is it that the normal adult dosage is 2 Panadol tablets? Why not one …one big one twice the size of the current size?

Maybe from a marketing perspective it’s seen as ‘better’ to promote a packet of 20 smaller tablets than 10 bigger tablets, or 10 smaller tablets than 5 bigger tablets? A pack of 20 sounds better than a pack of 10.

Or it may be that kids only take one, and so instead of cutting a bigger tablet in half, we’re simply told to take two.

Anyone know the answer to this?