IF you look at reviews of this you will find that there is enough evidence to say that arginine is possibly effective for this.
There is not even enough evidence for citrulline alone or for the two together to say that citrulline has any bearing on this...not at this point in time.
I use argine up to 5 grams a day with my patients who want the benefits of arginine, and up to 15 grams under supervision.
There are many other ways to naturally approach ED but they should be based on measurement, not self help trial and error.
A comprehensive approach to this is found in functional medicine.
Find an MD trained here
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