Instructions
Open the "Options" menu from the main menu. Select the "password screen." Enter "WXAFSJ" to unlock Capsule 1 and "OEINLK" to unlock Capsule 2.
Enter "WFKVTG" to unlock Capsule 3, "FCAVDO" to unlock Capsule 4 and "YYPOKK" to unlock Capsule 5.
Type in "GDQDOF" to unlock Capsule 6, "HHXKPV" to unlock Capsule 7 and "UOKXPS" to unlock Capsule 8.
Enter "LMIRYD" to unlock Capsule 9, "MJLJEQ" to unlock Capsule 10 and "MHNCQI" to unlock Capsule 11. You can now purchase all 11 Capsules from the shop.