I am prone to cold sores. If I get Juvederm in upper lip, could it trigger cold sores, and would it be dangerous?

HI.  Yes - an injection has the potential to trigger a cold sore.  Best bet is to get a prescription for some Valtrex prior to injection, in order to reduce the chance of this possibility.

Cold sores ( herpex or herpex simplex )  are usually triggered by stressing factors like "cold", "stress", "trauma", etc. Juvederm injections in the lip, by causing minor trauma to the lip (any injection is traumatic to any soft tissue like the lips) may trigger a cold sore.Patients with history of cold sores should discuss with their board certified plastic surgeon about taking taking cold sore prophylactic medication ( like valancyclovir or Vatrex -trade mark-) prior Juvederm injections.John Mes, MD
Board Certified Plastic Surgeon
New Jersey (NJ) & New York City (NYC)