Of course, it is true that collagen supplements serve with many health benefits; it is also vital to understand a few risks that are associated with use of collagen supplements. Firstly, it is important to clarify that collagen creams and treatments are quite costly and is not everybody’s cup of tea. Thus, buying collagen supplements is not everyone's capacity. Also, there are a few serious side effects that are associated with collagen supplementation. Some people having food sensitivities may have trouble with oral collagen supplements. In such a case, the person may have to face side effects like skin rashes, itching. Also, collagen injections pose danger just like oral collagen tablets. And sometimes the side effects might be really very severe. This is because most of the collagen supplements are products are made out of cow and chicken. And this might not be suitable to everyone. Studies indicate that people having herpes simplex faced flaring up of symptoms after using collagen supplements and their symptoms worsened. It is therefore vital to take doctor's consultation and then only buy such collagen supplements; otherwise there is always a fear of probable side effects which might be harmful for health.