<unk>  (INN) or<unk>  (USAN), trade names Cyclapen, Cyclapen-W, Vastcillin, and others, is an aminopenicillin antibiotic. Its spectrum of activity is similar to that of ampicillin, although it is less susceptible to beta-lactamases than ampicillin and has much higher bioavailability. A large randomized, double-blind clinical trial published in 1978 also showed that<unk>  is associated with significantly fewer and milder adverse effects than ampicillin; later studies seemed to confirm this improved tolerability, at least in children.<unk>  has been superseded by newer antibiotics and is no longer in clinical use, at least in the United States.
Cyclacillin
Fluclorolone
Clindamycin hydrochloride 
Moxifloxacin 
Oxytetracycline
Minocycline
Plicamycin
Oxacillin