Pleased that because of the high dose we now only need to remember to take it once a week! also covers all bases with both kinds of B12 since the research on which is best is inconclusive. It is sub-lingual which is good for absorbing but does mean it's slightly chalky in the mouth. Doesn't bother me but my daughter finds that annoying. Cant talk about efficacy as we've only just had this brand but I don't anticipate problems. UPDATE: WE all got good blood results for B12 after using this product so the efficacy was good for us.

taste isn't horrible and it doesn't feel chalky. dissolves fairly quick as well.

This is the only b12 I buy because of the specific ingredients in it. Love this product!

Best B 12 absorbs quickly into the system and it has a good taste .

Perfect balance of ingredients within neat packaging. As well as balancing effect on nervous system , metabolism and neutral taste .

Hard to find a combination of all three forms - very good dose taken daily or a couple times a week

Best form of b12. 1 per day is all you need.

Quality product. I feel the benefits of using it.

Very good product! I like it a lot!

I trust Source Naturals and was disappointed to see folic acid in this "health" supplement.