firstly, sorry for no capitals. i've broken my arm so am typing one handed.
i took solgar and jarrow 5000mcg b12 for 4 months - fantastic result, felt so much better. my blood test came back as b12 being 1400 so i changed to the 1000mcg as a 'follow on'. however, i've noticed two things. the tablets 'melt' under my tongue in about 30 seconds whereas the 5000mcg ones could take 15 minutes. i wonder if this is usual and if it will affect absorption??
also i have a return of some of my symptoms like the 3pm 'dip' and some tingling in my hands and feet.