I have had cold sores since I was 2months old I'm not 22, and my doctor has only just told me about this medication however I get really worried about taking new stuff.
I've taken Famvir and I now take Valtrex. I suffered from cold sores since childhood and badly- getting them over half my mouth, on my chin and in my nose. Now I'm 50.
At times I recall getting them every two weeks during a particularly stressful time in my life (late 20's) that's when my Dr said I could start taking one a day as a prophylactic.
I've not experienced any negative side effects from either of these medications- in fact, if I take them soon enough I can avoid a breakout all together.
I also have a topical cream that I use in conjunction with the tablets called Denavir. If you are uncertain about the tablets, could you ask your doctor about a topical cream such as Denavir? It works very well if applied immediately- in fact when I'm extra worried about cold sores, I will sometimes use this at night (since I seem to "wake up with them") as a prophylactic. Same with valtrex - if I'm going through a stressful time, I will take one as directed for prophylactic protection against a breakout.
If anything, I feel tired and a little under the weather when I have a cold sore or am fighting one - I don't think that has anything to do with the medication and more to do with my immune system.
Hope this helps you. I'm so grateful to have these medications in my arsenal - and for most of my teen years had nothing. L-lysine never helped me. Although avoiding nuts (peanuts in particular) chocolate and wearing sunblock did.
- Famvir Information for Consumers
- Famvir Information for Healthcare Professionals (includes dosage details)
- Side Effects of Famvir (detailed)
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