Whenever you are prescribed with antibacterial medication, avoid eating the foods listed above to be safe. Of course, your doctor would know better as to what and what not to avoid, so it would be better to ask first. If you happen to have any craving for delicious treat, such as for potato rosti, a visit to your physician would make you aware if it’s okay to eat it if you are taking antibiotics. But generally, the said treat is a tasty one that does not have contraindications.