Titchou:
I'm really sorry to hear you have such a broad range of antibiotic sensitivities. Here's a list of Cehalosporins so you can determine whether you've had them. They include:
Cefaclor (Ceclor; Raniclor)
Cefadroxil (Duricef)
Cefamandole (Mandol)
Cefazolin (Ancef)
Cefdinir (Omnicef)
Cefditoren (Spectracef)
Cefepime (Maxipime)
Cefixime (Suprax)
Cefmetazole (Zefazone)
Cefonicid (Monocid)
Cefoperazone (Cefobid)
Cefotaxime (Claforan)
Cefotetan (Cefotan)
Cefoxitin (Mefoxin)
Cefpodoxime Proxetil (Vantin)
Cefprozil (Cefzil)
Ceftazidime (Fortaz)
Ceftibuten (Cedax)
Ceftizoxime (Cefizox)
Ceftriaxone (Rocephin)
Cefuroxime and Cefuroxime axetil (Ceftin; Zinacef)
Cephalexin (Keflex; Pan|xne Disperdose)
Cephalothin (Keflin; Seffin)
Cephapirin (Cefadyl)
Cephradine (Velosef)
Loracarbef (Lorabid)

The only ketolide that I'm aware of is called Telithromycin (Ketek, which I believe someone mentioned on this board recently). It's not a macrolide, but is structurally related to them, so there is the possibility of a similar allergic reaction to it as you'd have to macrolides.

The only other types of antibiotic you haven't already used that's FDA approved for the treatment of sinusitis are Lyncomycins (also structurally related to macrolides), only one of which is really safe (Clindamycin). However, there are some other antibiotics with unlabled but nonetheless well documented and clinically successful efficacy against the common bacterial causes of sinusitis.

WOW, Fearless! You've really done your homework! I vaguely recall Keflex...does that give you a metallic taste for the duration of the use? If so, that's the one...nasty...gained weight trying to eat something to kill the taste! Anyway, I'll be sure to keep this list handy. Hopefully, I won't get another sinus infection. I've had my deviated septum repaired and my sinuses reamed out so everything usually drains pretty well. And I irrigate a lot...Thanks so much!

Note that not all of those I listed are approved for the treatment of sinusitis, but some are - I listed them all just in case you had them for some other infection.

Many antibiotics can leave a metallic taste, but did you have any other negative reaction to Keflex? If not, hopefully cephalosporins will be a viable alternative for you. They're the most common replacements for people allergic to the commonly prescribed URI antibiotics.

No problem. ^_^ I'm glad your surgery fixed you up.