I order the patches through the internet at vitasciences.com
There is another company that has them for less, but the patches were poorly made and self-destructed when i peeled them off. went back to vita sciences. Blood work proved that they do work. The injections were very painful and more expensive than the patches.
Don't recall feeling full of energy after using them, but levels of B12 are within normal range, not low like they were. Good luck with them. The Vita company ships them out first class, so I get them fairly quickly. linda