Hi..Thanks for the query..
As per your complain a large sore on the lower lip, if it is on the inner lip then it can be a
canker sore while if it is on the outside of the lip then it can be an abscess caused due to infection..
If it is on the outer lip then you can clean it with antiseptic solution like betadine and apply
Triple Antibiotic ointment over it..
If it is painful then you can apply
Lidocaine gel over it for relieving pain..
Doing cool compresses can also help in reducing soreness..
A course of antibiotics and anti inflammatory painkillers can also be taken to relieve pain and resolve infection..
If it is on the inner lip then do warm saline gargles
Gargles with 1:1 solution of benadryl and
milk of magnesia can help..
Apply numbing gel over the sore for relief from pain especially during eating..
Take a
multivitamin tablet for a period of 15 days..
Avoid spicy, sour and acidic foods..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.