Toothpaste Trouble

I'm fed up with being unable to find my favourite toothpaste, mentadent p. Only Boots seem to stock it now and I can't be bothered to go to Boots.

So I'm going to try mentadent SR (formerly Gibb's SR). I don't know what it tastes like, all I know is that it's a damn sight cheaper than 'p' and 'p' hasn't been doing me many favours recently, what with all my visits to the dentist and all.

But what does the 'SR' stand for? I really really hope for the sake of my physical and mental well-being it's...

Smiling Righteously.

Hallelujah.

Or halitosis?

We shall see.