12a Feverish (8) ????i???
7d Of pharmaceutical products, available without prescription (9) ???i?i?a?
8d Layperson dedicated to a monastic or religious life (6) ???a?e
10d Final Quartet (6,7) ???t?e ?i?t?n?
Thank you so much. And apologies, first for my spelling mistake (grovel, grovel!) and, secondly, for not writing sooner to say thank you. There is a reason: I had too much homework and wasn't allowed on the computer (except for the homework!) so I have only just found that you did solve it. It's been driving me crazy. That one little letter (Scorpiojo has it right) could cause so much difficulty!
steven