Who have Canker sores with L-lysine - from FDA reports


Canker sores is reported only by a few people who take L-Lysine. We study 808 people who have side effects while taking L-lysine from FDA. Among them, 2 have Canker sores. Find out below who they are, when they have Canker sores and more.

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On Jan, 11, 2019

808 people reported to have side effects when taking L-lysine.
Among them, 2 people (0.25%) have Canker sores


Number of reports submitted per year:

Could L-lysine cause Canker sores?

Gender of people who have Canker sores when taking L-lysine *:

  • female: 50 %
  • male: 50 %

Age of people who have Canker sores when taking L-lysine *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 100 %
  • 30-39: 0.0 %
  • 40-49: 0.0 %
  • 50-59: 0.0 %
  • 60+: 0.0 %

Top conditions involved for these people *:

  1. Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 100.00%
  2. Hypersensitivity: 1 person, 50.00%
  3. Cataplexy (loss of muscle tone accompanied by full conscious awareness): 1 person, 50.00%

Top co-used drugs for these people *:

  1. Xyrem: 2 people, 100.00%
  2. Requip: 1 person, 50.00%
  3. Nuvigil: 1 person, 50.00%
  4. Flonase: 1 person, 50.00%
  5. Celexa: 1 person, 50.00%
  6. Benadryl: 1 person, 50.00%
  7. Adderall: 1 person, 50.00%

Top other side effects for these people *:

  1. Oropharyngeal Pain: 1 person, 50.00%
  2. Food Allergy: 1 person, 50.00%
  3. Drowsiness: 1 person, 50.00%

* Approximation only. Some reports may have incomplete information.

FDA reports used in this study



Do you have Canker sores while taking L-lysine?


You are not alone:




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L-lysine side effects

Browse by gender and age

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+


Browse all side effects of L-lysine
a b c d e f g h i j k l m n o p q r s t u v w x y z

What would happen?

Predict new side effects and undetected conditions when you take L-lysine and have Canker sores


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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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