Welcome to the forum.
I have had daily head pain since 2006.
here is info on Cambi. /www.drugs.com/cambia.html
I can not take it because one third of my pain is from cluster headaches. then I have Trigeminal neuralgia and hemicranial continua. All under the "umbrella" of migraine.
I too take topomax, I am on generic, take 100 am, 150 p, I also take 5mg of baclofen 3 times a day. This keeps my pain Level down to around 3-5 in the scale .
I understand your slurring and vision.
I can suggest a few things to help that. I worked for me and I know a few other people. Change your diets to Whole Foods diet. NO processed foods. Reduce read meat s much as possible. NO artificial ingredients, NO food dyes. Wean off the caffeine to nothing.
Check the juices for artificial stuff. I drink 32oz + of water a day.
Fruit, veggies, salads, roast veggies in oven, omelets, rice dishes, grains, whole new world!!
Love mangos, avacodos, etc....
Weather plays a big part in my pain, so I may be increasing the baclofen up some.
But since 2006 and many neurologist I have discovered that just meds are not going to be MY answer.
I hope some of this info help.