I thought i may as well add a post here to show the overseas equivalent medications. If anyone can add anything then please do
Miralax (US) = Movicol (UK)
Advil (US) = Nurofen (UK)

nitroglycerin (US) = rectogesic (UK)
metamucil/citrucel (US) = fybogel (UK) more or less anyways
Miralax (US) = Movicol (UK) = Restoralax (Canada)

So that's what metamucil is !!
Ohh Nitro = nitroglycerin = rectogesic = GTN = Nitro = Glyceryl trinitrate
Slightly going off topic but a glossary of terms:
AF = Anal Fissure
BM = Bowel Movement
CRS = Colorectal Surgeon
GTN = Glyceryl trinitrate
LIS = Lateral Internal Sphincterotomy

Anoheal = diltiazem

RECTIV = nitroglycerin Ointment 0.4% on sale in the US.
SAD = Standardized Anal Dilation
THD = Transanal hemorrhoidal dearterialization

DILTIAZEM = a calcium channel blocker. In the treatment of fissures it is given in ointment/gel form and it works by relaxing the muscle around the anus (the anal sphincter), thereby reducing the anal pressure and increasing the blood flow to the area to allow healing to occur.
NIFEDIPINE = a calcium channel blocker. It is used in the same way.