NICE guidelines here: cks.nice.org.uk/topics/migraine/management/adults/
Supplement guidelines here: migrainetrust.org/live-with-migraine/healthcare/treatments/supplements/ (my neurologist helped write this guidance).
You may not qualify for a neurology referral if you've only been on one preventative medication. There are many options - amitryptiline is one, but it's not the best and surprised they went for it first.
Also: nortryptiline, propanalol, topiramate (if you're prescribed this, be very alert to the side effects, it's pretty awful stuff for some of us) etc.
Acupuncture can be given on the NHS - I've had two courses.
I'm now on monthly CGRP injections after umpteen preventatives failed including a couple of years of 42 Botox injections every 12wks under neurology.
If one triptan doesn't want work, there are 7 options. Ask your GP for an alternative.
Codeine shouldn't be used for migraine due to the exceptionally high risk of medication overuse headaches and your GP shouldn't be prescribing it for this without massive warnings and monitoring. I've had to do 3months with no meds at all and it was hell on earth coming off all the painkillers cold turkey. Never again. Also something neurology will make you do if there's the slightest hint of medication overuse, especially with opiates.
I have both daiths pierced - nothing changed. I use a Cefaly daily - it's nice to use in an attack for a distraction for a hour, but that's about all it does for me.
I've done every bloody diet, every exclusion regime, FODMAP, you name it - no triggers identified.
Alcohol, overheating, strong perfumes and bright light are my main issues. I wear green Migralens sunglasses outdoors most days and have had a colorimetry assessment so I also have pinky orange tinted glasses for shitty glarey office lighting.
I have ice packs, rollers and head ice caps filling a shelf in the freezer.
You name it, I do it. Unmedicated I'm up to 27 days a month of migraine even with all the other supplements, Cefaly etc.
On my CGRP injection, I'm down to a max of 5 attacks per month. 5!!! It's given me my life back.