Delayed Release & Extended Release Caps Vs. Liposomal Delivery
Delayed Release (DR Caps), and Extended Release (ER Caps) protect ingredients from stomach acid only. They delay, but not really sustained release.
Liposomes protect the payload through the GI tract and into the bloodstream, then release more slowly up to 24 hours (depending on the liposome).
Besides a big increase in bioavailability, they are truly sustained release. Any supplement known to have poor bioavailability should use liposomal delivery.