It has been used as a first-line treatment in Canada and parts of Europe for more than 40 years.
Its going to be fantastic to have another option for patients, McAchran said.
E. coliis the most common cause of UTIs.

Illustration by Joules Garcia for Verywell Health
Antibiotic resistance is a particularly big problem for UTIs because of how common they are.
More than one in five samples of urine containingE.
Pivya may not contribute as greatly to antibiotic resistance because it doesnt reach high concentrations in the gut.
It can be taken with or without food.
McAchran said Pivya could be used as a first-line treatment both for first-time and recurrent UTIs.
However, she said most people can correctly judge whether they have a UTI based on symptoms alone.
Pivya should be able to treat most standard cases without the person needing to get a test.
The most common side effects of Pivya include nausea and diarrhea, the FDA said.
The FDA said people with serious hypersensitivity to beta-lactam antibacterial drugs like penicillin should not take Pivya.
The other contraindications include very rare metabolic disorders.
Whether thats Pivya or another option could depend on your insurance and the availability of the drug.
Department of Health and Human Services Office on Womens Health.Urinary tract infections.
2019;13(2):48-55.
Food and Drug Administration.Pivya (pivmecillinam) tablets, for oral use[drug label].