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Hello. I am sorry for the delay, but I was called away from the computer and I will need to leave the compter again in about a half hour.
It is not entirely known what causes canker sores. It is due to inflammation of the lining of the mouth or lips. There are a number of life situations that can precipitate a canker sore, but the most common is general stress on the body, which can either be physical stress (such as from an acute infection) or psychological stress (such as from a break-up).
The duration of a canker sore can be quite variable. The average length of time to complete healing is a week or two, but some are quicker and some are slower. A more severe canker sore may take 4-6 weeks to heal completely.
In most cases, using an over the counter remedy to ease symptoms is fine and it will heal spontaneously. If there is more severe inflammation, then you doctor can prescribe some steroid medicines to ease the inflammation, but this is typically only needed in a very small percentage of canker sores.
If I can provide any additional information, please let me know.
If you are tired, it is reasonable to rest, but you probably would do better to do both. You certainly need to be getting plenty of rest, but exercise also usually helps.
Vitamin B12 deficiency is one of the possible situations that can precipitate canker sores, and in those people vitamin B12 supplementation can help, but it probably does not help most people.
There is some early research that lysine may help canker sores, but the evidence is not solid that it does so.
Yes, since your vitamin B12 is on the low side, taking a vitamin B12 supplement is appropriate. Your doctor stated the dose correctly. You need to take the supplement more often initially to build up the level, and then less often later, because vitamin B12 stays in your body for a long time. Take one pill containing 1000 mcg every day for 2 weeks, then one pill containing 1000 mcg once a week for 4 weeks, and then she will recheck the vitamin B12 level.
I have to leave the computer again for 2-3 hours. I will be back later today.
Since you are not overtly deficient, it cannot be said that vitamin B12 supplementation will definitely help, but it is appropriate to try it to see if it helps.
A B complex supplement usually does not contain this amount of vitamin B12, so you wold typically need to take a dedicated vitamin B12 supplement. It is OK to take a B complex in addition to the vitamin B12, and the smaller amount of vitamin B12 in the B complex will only augment the dedicated vitamin B12 supplement.
During an active sore, the dose of lysine would be 1000 mg three times per day. Once the sore is gone, the preventive dose is 1000 mg once daily.
When it is getting better.
If it is getting better in any way.
It is impossible to tell from a single picture.