NOW Foods Supplements, L-Lysine (L-Lysine Monohydrochloride) 500 mg, Amino Acid, 100 Veg Capsules

Customers find this L-Lysine supplement highly effective, reporting that it helps with canker sores, improves immune system function, and heals symptoms within three days. The supplement is easy to swallow, tastes delicious, and comes in convenient capsules that are easy to open. While some customers find the capsules too large, they generally consider it good value for money.