What are the negative side-effects from HR23+® hair supplement? HR23+® hair supplement was brought to market in 2015, and has been used by thousands of men and women, all over the world. Like any potent herbal supplement, HR23+® can cause side-effects in some people, although not everyone gets them. There have been no reports of any major harmful side-effects from using HR23+®, however, in some rare cases, mind side-effects may occur. Some rare side-effects that some users have reported are: Stomach discomfort - mild stomach discomfort may occur during the initial stages of using the supplement, but this usually clears away after a day or two. Taking the capsules with food is a good way of getting rid of the stomach discomfort. Acid reflux - You may experience mild acid reflux during early stages of use, but these symptoms will clear away after 24-48 hours. To counter this, avoid taking the capsules on an empty stomach, and also avoid taking them right before exercising. Urine dis