Thanks for writing in to Healthcare Magic!
It is a great respite that you got a full relief from a disease that is a real challenge to manage.
and methylcobalamine are absolutely safe drugs and can be continued for years together without long term effects. Some of the side effecte are mentioned below, note that they are not universal.
Betahistine side effects- Skin rashes, dizziness
. Gl disturbances, CNS disturbances. Headache. containdicated in asthma and peptic ulcers.
Methylcobalamine side effects- GIT upsets, nausea, vomiting
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!