What constitutes "time released" in regards to vitamins?

I have a bottle of Super B-Complex USP Tablets, tested to dissolve in 60 minutes.

Does this mean these are time released, and that there are vitamins out there that dissolve immediately?

Thanks in advance.
Stoic Reviewed by Stoic on . Quick question; getting tested tomorrow morning... What constitutes "time released" in regards to vitamins? I have a bottle of Super B-Complex USP Tablets, tested to dissolve in 60 minutes. Does this mean these are time released, and that there are vitamins out there that dissolve immediately? Thanks in advance. Rating: 5