Scratching can indeed cause swollen lips. This is likely because there is a great irritation that is not normally there.
you need to phone 911 ASAP
No. It will reduce the size of swollen lips though.
No. If you apply it & your lips swell, you may be having an allergic reaction to the product.
take a doctor
That's an antibiotic, and you shouldn't be self-medicating with those. Depending on WHY your lips are swollen and blistered, it might not do you any good anyhow.
ice for ten minutes
Ice them for about 20 minutes.
You first get swollen lips then they fall off...
ask your vet
Swollen lips hurt while eating tomato sauce because of the citric acid in tomatoes. Just as it would hurt eating a pineapple.
Congratulations, you are pregnant.