Lysine may help reduce cold sore flare-ups, but don’t use it if you’re pregnant, as there isn’t enough research to support its safety. It’s a good idea to ask your doctor before trying any ...

The best cold sore creams relieve the symptoms of the sores ... Best menthol treatment: Quantum Health Lip Clear Lysine+ ... $9.99; Active ingredients: menthol 0.1% and L-lysine; Dose: apply ...

The best cold-sore treatments and remedies to get rid of a cold sore fast, including Abreva, Cortizone-10, Nature Made Extra Strength L-Lysine, Herpecin L Lip Balm, Manuka Health Manuka Honey ...

One 2020 review of research suggests lysine supplements may help prevent HSV-1 from replicating and reduce the duration of a cold sore. Lysine may block another amino acid called arginine , which ...