as per the details u have given,
Your mother has been suffering from OSTEOPOROSIS
, and she is on Alendronic acid
weekly once, flucoxacillin is a penicillin related antibiotic and u can take it along with it..
but one thing you should remember is before taking alendronic acid , she must take it with a empty stomach with 2 glasses of water and should NOT be lie down for 15 to 20 minutes to avoid reflux and heart burn..
so i suspect she is complaining of heartburn
because of either alendronic acid or the calcium tablets, so start using ranitidine
or pantaprazole preperation every day morning before break fast , it will help u in this regard..
i hope this will help u..