Hi @kareem, It looks like your platelet level has been on a little roller coaster ride. Your doctor had you taking B12 and Folic acid which brought your numbers back up into a normal range again and then you were able to stop taking the vitamins and Folic acid.
Your platelets took a little dip after a flu and tetanus vaccine but have again recovered. You’re still taking B12 and you’re wondering if that’s ok?
That is a question best answered by your physician. There isn’t any toxic level to taking vitamin B-12 but it would be a good idea to have your blood serum level checked to see if you still need to be taking the vitamins.

Depending on your age, your platelets are hovering at the low end of “normal”. So make sure you tell your doctor if you experience slower clotting time with a nick or cut, if you bruise easier or have any unexplained bleeding.

I posted the platelet range table below so you can see where your numbers fall.

Male. Female
60–69 150,000–300,000 165,000–355,000
70–79 130,000–300,000 165,000–300,000
80 and over 120,000–300,000 165,000–300,000

You can ask to have a blood serum check for Vitamin B-12 at your next blood draw if your doctor thinks it’s necessary.
How frequently do you get your blood tested?