Yes, there are products and medications that can boost the immune system. Some boosts and vitamin supplements can help if a person has a dietary imbalance that may be linked to various causes. However, if someone is frequently getting sick, it is important to seek a complete medical consultation to identify the underlying cause and treat the root of the problem. For example, vitamin C can help reduce the duration and severity of cold symptoms during the winter season. It is important to consult with a healthcare professional to determine the best approach for boosting the immune system.