This section (http://www.vaginapagina.com/index.php?title=Hormonal_Birth_Control#Prescription_Medications_and_Herbal_Supplements) of the Vulvapedia has some pretty good advice for checking the interactions of herbal supplements with HBC:
"Other Drugs and Herbal Supplements--To be safe, check each product with a doctor, pharmacist or herbalist before beginning the new treatment."
While it's maybe not the most convenient thing to do and while I don't know of any interactions between the AZO products and HBC, I'm not someone qualified to give a definitive answer to your question. And since there are studies suggesting that some herbal supplements, like St. John's Wort, can affect HBC, "herbal" is not always synonymous with "safe."
If you do choose to speak with a pharmacist or herbalist, I'd be interested in knowing what he or she advises. I've used AZO Yeast in the past, and I currently use HBC (though not for contraception), so I'm slightly curious to know a more definitive answer to this.
no subject
While it's maybe not the most convenient thing to do and while I don't know of any interactions between the AZO products and HBC, I'm not someone qualified to give a definitive answer to your question. And since there are studies suggesting that some herbal supplements, like St. John's Wort, can affect HBC, "herbal" is not always synonymous with "safe."
If you do choose to speak with a pharmacist or herbalist, I'd be interested in knowing what he or she advises. I've used AZO Yeast in the past, and I currently use HBC (though not for contraception), so I'm slightly curious to know a more definitive answer to this.
Good luck!