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  • How are reviewers describing this item?
    cold, great, easy, good and sore.
  • Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 404.
  • Previous analysis of this listing was an C grade.
  • Our engine has profiled the reviewer patterns and has determined that there is high deception involved.
  • Our engine has analyzed and discovered that 51.2% of the reviews are reliable.
  • This product had a total of 1,597 reviews as of our last analysis date on Jul 2 2020.


Most positive reviewquestion

I use this for my cat she has feline stomatitis and I've noticed less irritated gums for her overall.

Least positive reviewquestion

Lysine helps prevent my canker sores. These are somewhat large but easy to swallow capsules.

Most authentic reviewquestion

Prevents a cold sore if you take one after a long day out in the wind/sun. The 1000 mg are too big to swallow

Least authentic reviewquestion

I've been using l Lysine for many years to fight off cold sores, fever blisters. If I take right away I can avoid getting one. ...  Read More

Helpful Insights


    Posted by a reviewer on Amazon

    All pros and no cons as far as our household is concerned.

    Posted by a reviewer on Amazon

    You have to build it up in your system.

    Posted by a reviewer on Amazon

    Easy to use, you get what is advertised

    Posted by a reviewer on Amazon

    Ok, this is crazy but i have to share.

    Posted by a reviewer on Amazon

    Ummm, don't take at bed time, unless you intend to have an obe.

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