My experience is it works as well as guiness & gunpowder :lol:
On a more serious note, it worked well with me and did not alter by BG's in any way up or down. I could not abide the flavours and ended up with the standard 'original' packs.
Since those days I now have moved on to Movicol as that jollop can be taken any time and not necessarily following food to spoil the taste :clap: :thumbup: