is listed as an adverse effect, it's referring to a Mega Keto which is fairly limited in scope. For example, when balanitis is the cause of redness (almost exclusively in uncircumcised men), it is usually localized in the glans and top of the foreskin. In other instances, the redness may refer to a splotchy allergic reaction, which may have any number of causes, and which is mostly not consistent, even redness throughout the penis. Guide Me Health - Best Natural Health Products reviews