HI I have a cold sore and I need medication to prevent it from getting worse.

Doctor can evaluate. People who get recurrent cold sores on the lips or other skin areas can benefit from taking antivirals such as Valtrex (valacyclovir) either only as each cold sore is starting to develop, or taking some antiviral each day. One's doctor can help decide which is the better way. A patient may also try HealthTap PRIME for a video consultation with a doctor (fee is the same whether a medication is prescribed or not).

Related Questions

I usually get a cold sore after I have a cold is there any vitamins I should take daily to prevent this? Or a prescription I should be on?

Antivirals. If you know that every time you get a cold, you get a cold sore (herpes simplex), it's definitely worth talking to your doctor about having a prescription of antiviral medication like valacyclovir or famcyclovir that you can start when the cold starts just to prevent a cold sore. If this happens often, your doctor may consider giving you daily antiviral meds to keep the outbreaks suppressed. Read more...
Options. Melissa officinalis or lemon balm (cream) has been shown in european studies to help expedite healing of cold sores. It can reduce healing time by half. Studies also show that regular use can help v recurrences. Brief supplementation with lysine 1, 000mg orally three times a day at the onset, can also hasten healing. Read more...

If you have a cold sore should you avoid kissing a partner to prevent passing herpes?

Yes and no. Cold sores are of bacterial origin but herpes is a virus. Either can be passed by contact so you should refrain from contact. Read more...
Yes. If you have cold sore blisters it is best not to share eating utensils, chap sticks or lips sticks or kiss in order to prevent spreading the infection to someone else. Read more...