Now that I have confirmed this works, I would like to share with you a very easy way to make cold sore medicine that works incredibly well; and it's made from weed. This medicine has worked so much better for me than any OTC or Rx treatment.
Lastly, I can't take credit for this I found it on a website while searching google and am simply spreading knowledge.
0.5 grams of the strongest bud you can get
1 oz of strong alcohol (at least 70% and make sure its clear. Supposedly Iso Alcohol works but I've only used Devil's Springs)
Step 1: Fill a container (like an old Rx or glass bottle) with 1 oz of alcohol.
Step 2: Break up the .5g of bud into the jar but make sure its very finely done (may not want to use a grinder in case of losing THC)
Step 3: Leave them in a cool dark place (i use a freezer) for 2-4 weeks, shaking often (every 1-3 days)
Now the next time you feel a blister coming on simply dip a Q-tip into the solution (don't need much at all) and apply to the area. I dab it on, wait 10 seconds, then dab it again and chuck the Q-tip. Do this 3-4 times a day until the blister is fully gone.
After using this multiple times and letting someone else try it I can tell you it works incredibly well. Once I apply it, if i keep up with it, the blister will virtually stop and start healing by roughly the next day. No prescription I have ever used can come close to the effectiveness of this. Apparently the THC stops the virus from replicating. The type a bud I used I'd consider headies if compared to medical CA nug (which I didn't have access to at the time of the experiment). The original experimenter believes this may actually stop the virus from coming back in that same place too. I have not had repeat blisters in the same area since. Please leave feedback as to how this works for you and let everyone know because I know cold sores suck.
Here's the original page I found this from: Medical Marijuana Treatment For Herpes Outbreaks