I got a cold sore from probably drinking from someone elses cup, what should i put on it?

Tx options.: Your Dr can prescribe oral Valtrex (valacyclovir) or another antiviral medication. Laser txs are also used to treat cold sores. Melissa Officinalis or lemon balm (cream) expedite healing of cold sores. It can reduce healing time by 1/2. Studies also show that regular use can help v recurrences. Brief supplementation w lysine 1,000mg orally 3 times a day at onset, can also hasten healing.