Hi mama! I appreciate you trying to help, but I really can't advise on sharing or selling medicines, kahit spare boxes pa, kasi it's serious stuff and kailangan talaga ng doctor's guidance for each person.
If you have extras, best approach a pharmacist or your OB about safe disposal, or maybe ask your doctor kung may patients sila who need it at lower cost. Pero between us moms, prescription meds are really personal, what works for one person might not be safe for another, you know?
Take care!