milo,
The very first and most important thing is to talk to your doctor about the double vision to make sure that it really is a side-effect of the medication and doesn’t need to be dealt with as a separate issue. Also, because you seem to be having trouble with the topiramate. This is vital information for him/her to help you. Topiramate can occasionally unmask other health problems that might not have been noticeable before treatment.
You ask, “Can I see any results with 50mg?” There is no simple answer to that. Some may, some will not. Usually the therapeutic dose that results in the very best outcome is 100 to 200 mgs per day, but that won’t necessarily be what everyone can tolerate. This is very individualized and all Migraineurs are different. Have you seen any results yet? Are you taking 50mgs split throughout the day, or just once?
Since increasing the dosage too quickly can cause increased side effects, you might want to ask your doctor about increasing it more slowly. Unfortunately, some do not recognize that certain patients are more sensitive to these changes and will not want to let you do this. If that is the case you can always try asking him/her “will it hurt me to increase it slower?” If their answer is “no” then you might consider asking them to try taking things much slower to see if it will help you.
For instance – consider the fact that you were asked to increase the dosage from 50 to 100. That is a 100% increase – very steep! In an interview with Migraine.com’s Teri Robert mentioned here http://bit.ly/f2ZFti Dr Stephen Silberstein noted that success is achieved best by very slow titration. Starting at 15 mgs once daily, then slowly going upward from there, splitting the dose. Perhaps you might want to ask your doctor to try adding 15 mgs to the 50 you are currently taking and see if you are better able to tolerate that. Give yourself a chance to sit at that level a while (perhaps weeks even) before considering whether it is a failure or a success and determining where to go from there.
I know Migraine attacks are horrible to consider enduring for weeks longer, but patience is the key to finding a good preventative, and worth the investment of time and yes, even the pain. Yes, it may take several or even many weeks to try something, but if it is successful then it is a very good investment. If it fails, it was still a very good investment because you know what won’t work now, and that is something you didn’t know before. You have made progress.
Another thing to take into consideration is the action of topiramate on the rest of the body. It may deplete or otherwise affect things like vitamins needed by our bodies for health. If we are deficient in these things, our health can suffer terribly. Some examples of vitamins the University of Michigan Health System http://bit.ly/hLPYuo says topiramate depletes include: Vitamins A, B6, B7, B12, D, E, K, and L-Carnatine. Depletions of these vitamins are why some of us have side effects to topiramate. As a result, some of the best doctors will monitor for your vitamin status throughout treatment, especially if you are having side-effects that may be attributable to depletions. Some will simply encourage patients to take a good multi-vitamin. For some of us this is not a good idea, as taking certain vitamins (like Folic Acid) can mask other deficiencies (such as B12) which can cause its own set of serious neurological problems. This is one of the problems I dealt with and one of the reasons I find it so terribly important to tell Migraine patients.
Off hand, I don’t know of any vitamin depletions that would expect to cause double vision, but I encourage you to talk to your doctor about your questions and research for yourself. The link I’ve provided here is a fabulous place to start…