It is usually not necessary nor recommended unless advised by a physician.

There are many kinds of supplements available, but you may want to be careful especially when consuming amino acid supplements such as ornithine as they inter-convert in the body. For example, ornithine is made from citrulline, and arginine becomes ornithine in the body. It is not recommended to take supplements especially amino-acid-based ones to avoid complications.

Iron is also something that does not need to be additionally supplemented unless advised by a physician, as it could cause a hepatic disturbance.