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Doctor insights on: How To Treat A Cold Sore Or Blister Over The Counter Meds

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Can I get rid of a cold sore with over-the-counter creams?

Can I get rid of a cold sore with over-the-counter creams?

Change acidity level: As you know canker sore as all fungal infections live and reproduce in an acid medium meaning a low ph. Before taking any antifungal medication, i would like you to try rinsing and only rinsing 3 to 4 times a day specialy @ bed time with milanta or any antiacid liquid. I'm sure you will have a positive response within 48 hrs. ...Read more

Dr. Heidi Fowler
1,014 doctors shared insights

Cold Sore (Definition)

Also referred to as fever blisters, cold sores are small, painful fluid-filled blisters that are usually found around the lips. Cold sores are generally caused by the herpes simplex virus 1 which is related to herpes simplex virus 2 that causes genital herpes. Cold sores are very contagious and can be spread by mouth to mouth contact. They can spread to the genitalia and cause genital ...Read more


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About a week ago, i got my first cold sore. I treated with abreva an valtrex (valacyclovir). Now it's nearly healed but some blisters didn't pop. Still infectious?

About a week ago, i got my first cold sore. I treated with abreva an valtrex (valacyclovir). Now it's nearly healed but some blisters didn't pop. Still infectious?

Herpes: Unfortunately you may be misinformed. If you have herpes you could be contagious all the time, even when you do not have a sore. The viral shedding through your skin is unpredictable and has no relation to whether you have a lesion or not. ...Read more

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I have herpes simplex 1 and get cold sores on my tongue and inside cheeks can I use the same over-the-counter products as i would for a lip cold sore?

I have herpes simplex 1 and get cold sores on my tongue and inside cheeks can I use the same over-the-counter products as i would for a lip cold sore?

May be oral aphthae: Herpes inside the mouth is uncommon. Oral aphthous ulcers are much more likely. The cause of oral aphthae is not known; sometimes oral ulcers are associated with other diseases or with systemic medication. There is no standard (nor very successful!) treatment for oral aphthous ulcers. Check with your doctor to see if he or she can make a more definitive diagnosis and treatment plan. ...Read more

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Cold sore like yellow blisters behind ears - painful & burning - usually get outbreak once a year - can I used cold sore cream to treat?

Cold sore like yellow blisters behind ears - painful & burning - usually get outbreak once a year - can I used cold sore cream to treat?

Have it evaluated: Is it one one side or both? If it's only on one side, It sounds more like shingles- cold sore cream won't likely help because it may extend over a larger swath of skin. Acyclovir is prescribed, to minimize the problem of chronic pain on the affected skin. ...Read more

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Can aloe vera be used to treat cystic pimple/blood blister/cold sore?

Can aloe vera be used to treat cystic pimple/blood blister/cold sore?

Possibly: Aloe vera has some anti-inflammatory properties and pimples, blood blisters and cold sores all are to a certain degree caused by an inflammatory response, so this may be useful. ...Read more

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What do doctors think is the top OTC or at home treatment for a fever blister "cold sore"?

What do doctors think is the top OTC or at home treatment for a fever blister "cold sore"?

Lemon balm: Melissa officinalis or lemon balm (cream) has been shown in european studies to help expedite healing of cold sores. May half healing time. ...Read more

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How is it that my 3 yrs old boy gets cold sore or blister in his mouth often?

How is it that my 3 yrs old boy gets cold sore or blister in his mouth often?

Could be herpes sore: It could be a herpes sore. Avoid giving your child peanut butter, other nuts and whole wheat bread. Lysine suppresses viruses and is an essential amino acid, so it should be very safe if crushed and given to your child. But because your child is so young, check with your pediatrician first. ...Read more

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Is a cold sore infectious if it doesn't blister?

Is a cold sore infectious if it doesn't blister?

Yes: A cold sore is infectious in all phases but is most infectious when a scab breaks open & fluid with virus weeps from it. ...Read more

Dr. Philip Miller
1,671 doctors shared insights

Blistering (Definition)

Blistering is a bubble of skin filled with fluid. They can occur to excessive rubbing (as with a new pair of ...Read more