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Methylcobalamin is better than cyano form, but you can use the cyano and see what happens. 10-30% of people cannot convert the cyano to active methyl in the body, so if the cyano does not work, you can get methyl form. Either online or some stores now locally do have methylcobalamin. Nature's Bounty at WalGreen's and Costco now carry it. There might be others now, that I am unaware of however. Read labels carefully.
The Costco one is a great deal... works out to 6 cents a day for 5000mcg. That is the one we use now here at home. I used to use Puritan's Pride one... and that one was good too. Long ago this product was hard to find... back then most of us used Jarrow brand at iherb.com . But those days have changed quite a bit.