Flanax/Flanax Forte Adverse Reactions

Most commonly reported adverse reactions: Abdominal discomfort, epigastric distress, headache, nausea, peripheral edema (mild), tinnitus and vertigo.
The following adverse events are rare but have been reported: Alopecia, anaphylactic reactions to naproxen and naproxen sodium formulations, angioedema, aplastic and hemolytic anemia, cognitive dysfunction, eosinophilic pneumonitis, epidermal necrolysis, erythema multiforme, fatal hepatitis, gastrointestinal bleeding and/or perforation, granulocytopenia, hearing impairment, hematuria, inability to concentrate, insomnia, jaundice, nephropathy, peptic ulceration, photosensitive dermatitis, skin rash, Stevens-Johnson syndrome, thrombocytopenia, ulcerative stomatitis, vasculitis and visual disturbances.
Although sodium retention has not been reported in metabolic studies, it is possible that patients with questionable or compromised cardiac function may be at a greater risk when taking Flanax/Flanax Forte.