To report SUSPECTED ADVERSE REACTIONS, contact Hi-Tech Pharmacal
Co., Inc. at 1-800-262-9010 or FDA at 1-800-FDA-1088 or
www.fda.gov/medwatch.
The most common adverse effects are gastrointestinal disturbances (nausea,
vomiting, anorexia) and allergic skin reactions (such as rash and
urticaria). FATALITIES ASSOCIATED WITH THE ADMINISTRATION OF
SULFONAMIDES, ALTHOUGH RARE, HAVE OCCURRED DUE TO SEVERE REACTIONS, INCLUDING
STEVENS-JOHNSON SYNDROME, TOXIC EPIDERMAL NECROLYSIS, FULMINANT HEPATIC
NECROSIS, AGRANULOCYTOSIS, APLASTIC ANEMIA, OTHER BLOOD DYSCRASIAS, AND
HYPERSENSITIVITY OF THE RESPIRATORY TRACT (SEE
WARNINGS
).
HematologicAgranulocytosis, aplastic anemia, thrombocytopenia, leukopenia,
neutropenia, hemolytic anemia, megaloblastic anemia, hypoprothrombinemia,
methemoglobinemia, eosinophilia.
AllergicStevens-Johnson syndrome, toxic epidermal necrolysis,
anaphylaxis, allergic myocarditis, erythema multiforme, exfoliative dermatitis,
angioedema, drug fever, chills, Henoch-Schönlein purpura, serum sickness-like
syndrome, generalized allergic reactions, generalized skin eruptions,
photosensitivity, conjunctival and scleral injection, pruritus, urticaria and
rash. In addition, periarteritis nodosa and systemic lupus erythematosus have
been reported.
GastrointestinalHepatitis, including cholestatic jaundice and hepatic necrosis,
elevation of serum transaminase and bilirubin, pseudomembranous enterocolitis,
pancreatitis, stomatitis, glossitis, nausea, emesis, abdominal pain, diarrhea,
anorexia.
GenitourinaryRenal failure, interstitial nephritis, BUN and serum creatinine
elevation, toxic nephrosis with oliguria and anuria, and crystalluria.
MetabolicHyperkalemia, hyponatremia.
NeurologicAseptic meningitis, convulsions, peripheral neuritis, ataxia,
vertigo, tinnitus, headache.
PsychiatricHallucinations, depression, apathy, nervousness.
EndocrineThe sulfonamides bear certain chemical similarities to some
goitrogens, diuretics (acetazolamide and the thiazides), and oral hypoglycemic
agents. Cross-sensitivity may exist with these agents. Diuresis and hypoglycemia
have occurred rarely in patients receiving sulfonamides.
MusculoskeletalArthralgia and myalgia.
Respiratory SystemCough, shortness of breath, and pulmonary infiltrates (see WARNINGS).
MiscellaneousWeakness, fatigue, insomnia.