L-Arginine (Nitric Oxide) Supplement Cautions It is the mark of any responsible supplement distributor to advise potential consumers of the potential side effects that exist with the consumption of their product. L-Arginine is a supplement that very rarely has side effects. Nevertheless the advice to proceed with caution is still sound council. Such negative interactions include taking L-Arginine along with any type of blood thinner or blood pressure medication including Coumadin (however current research by experts such as Dr.

Although adverse reactions with other medications have not been reported, as of a 2005 publication, the possibility exist for some. Responsibility and ownership over what you put in your body is always encouraged. Many side effect cautions will not apply to you. It is wise to thoroughly investigate the potential dangers and side effects of every supplement that you might consider using. There are no substances, even those substances created naturally by the body, which every person can tolerate without consequence. It is also helpful to remember that all supplements, no matter how natural or safe, will cause negative side effects in some people.

Other side effects that patients reported included mild cases of diarrhea, headache and recurrence of cold.

Prendergast show no negative interactions).