Yes they can. Bananas and pineapples are well known to cause canker sores in some people.
Salt water is great for cleansing sores in your mouth (gargling it at least). Can't see why that would be bad for cleansing your tongue piercing. (Just don't swallow! Ouch.)
generally not possible
I am currently on Minocyclin 100mg for my facial acne. Have had no mouth sores, but have had White Tongue for a while. Still looking if there is a connection...
I doubt the Vicodin caused the tongue blisters but it could have triggered the virus that is the cause of tongue blisters (canker sores on the tongue). They can be treated at the dentist office or a general practitioner's office. There is a solution that will help with the pain and treatment of the sores. If you have a dentist just go there and they will probably see you without an appointment since it only takes a few minutes to give you the solution.
Those are called chancre sores, they are usually made by eating a lot of salt or acids.
To get rid of tongue sores, try rinsing your mouth with a saltwater solution or a mixture of hydrogen peroxide and water. Avoid spicy and acidic foods, and practice good oral hygiene by brushing your teeth and tongue gently twice a day. If the sores persist or worsen, it is advisable to consult a healthcare professional.
A circular sore on the tongue could be a canker sore, however, the actual cause of these sores are unknown. Certain acidic foods, tissue injury or stress are possible reasons a sore on the tongue can appear.
Tongue cancer can appear as red and swollen sores on the tongue. The tongue may also appear brown or black.
Pickles don't cause cold sores.
Ambien doesn't cause canker sores.
Almonds don't cause cold sores.