Freddd no longer recommends the Country Life 5 mg, last I read, because he wasn't absorbing it well.
Also, you might try putting the tablet under your upper lip to help it dissolve slower. The saliva pools at the bottom of your mouth, so under tongue or against lower gum will be wetter than under the upper lip.
I second the B12 transdermoil. I am feeling it is more effective than sublinguals. I find it not that much more expensive than the Enyzmatic therapy tablets, given how many of them I had to take to get an effective dose in. $40 a bottle (when buying 3 or more and they have a long shelf-life so that is feasible) gives 60 doses of 750mcg each of the mb12, with an estimated absorption of 80 percent, according to some animal studies the developer did.