Ofloxacin drug interactions

Drug interactions The effect of antacids and cations on the absorption of these agents was considered above. Ciprofloxacin, ofloxacin and enoxacin can increase the serum levels of theophylline by inhibiting its metabolism. They also may raise levels of warfarin, caffeine and cyclosporine. Cimetidine interferes with the... 

OFLOXACIN INSULIN t risk of hypoglycaemic episodes Mechanism for hypoglycaemia is not known Watch for and warn patients about symptoms of hypoglycaemia - For signs and symptoms of hypoglycaemia, see Clinical Features of Some Adverse Drug Interactions, Hypoglycaemia... 

CIPROFLOXACIN, LEVOFLOXACIN, NALIDIXIC ACID, NORFLOXACIN ANTIGOUT DRUGS -PROBENECID t ciprofloxacin, nalidixic acid and norfloxacin levels Uncertain Watch for T incidence of side-effects. Moxifloxacin, ofloxacin and spar-floxacin do not seem to interact and could be used as alternative therapy... 

The probable reason for the interaction is that levofloxacin, ofloxacin and to a lesser extent ciprofloxacin, inhibit the secretion of unchanged procainamide by the kidney tubules via renal drug transporters. Levofloxacin also appears to inhibit the secretion ofV-acetylprocainamide. 

Information about the interactions with calcium carbonate is more limited than with the aluminium/magnesium antacids, but Table 10.3 , (p.329) shows that the bioavailabilities of ciprofloxacin and norfloxacin, and to a lesser extent gemifloxacin, can be reduced. These reductions are less than those seen with the aluminium/magnesium antacids, but using ciprofloxacin as a guide a very broad rule-of-thumb would be to separate the drug administration by about 2 hours to minimise this interaction. This is clearly not necessary with levofloxacin, lomefloxacin, moxifloxacin or ofloxacin, nor probably with some of the other qui-... 

A number of cases of convulsions have been seen in Japanese patients given fenbufen with enoxacin, and there is also one possible case involving ofloxacin. Use of these particular drugs together should be avoided. Normally no interaction seems to occur with most quinolones and NSAIDs, except where there is a predisposition to convulsive episodes. Isolated cases of convulsions, other neurological toxicity or skin eruptions have been seen when ciprofloxacin was given with indometacin, mefenamic acid or naproxen. These appear to be very rare events. 

Probenecid increases the serum ieveis and/or decreases the urinary excretion of cinoxacin, ciprofloxacin, clinafloxacin, enoxacin, fleroxacin, levofloxacin, nalidixic acid and norfloxacin. The ciinicai importance of these changes is uncertain, but is seems iikeiy they wiii oniy be important in the presence of other drugs that aiso affect renai excretion. Grepafloxacin, moxifloxacin, sparfloxacin, and probably ofloxacin, appear not to interact with probenecid. 

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