How to Get Rid of a Cold Sore With Home Remedies. Part of the series: Alternative Medicines for Common Ailments. Getting rid of a cold sore through home remedies involves taking 5 to 7 grams of L-lysine, an amino acid helpful in fighting viral infections, every day. Fight a cold sore by taking a therapeutic dose of L-lysine with advice from a chiropractor in this free video on alternative medicine.
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