B12

i took exidently a high amount of b12(1000 is it dangerouse? i'm not anemic but just a litlle bit low amoubt of b12 and been told i could take AND that it dousnt have sideeffacts

my b12 is 172 i know its not a big probleme i started taking it becouse i have hair loss AND im alwasys tired.... my hgb is also a litlle low-12.73 who knows...maybe thats the answaer to my problemes... sorry i cant write in hebruw my computer will be fied in a few days

sorry... i almost forgot to ask somthing very importent i had vision probleme all week long and now i feel it had goten worst could it be becouse the b12? thanks