Heart Conditions & Cardiovascular Health

Post-Viral Conditions

Functional Medicine in Boulder, CO

When an infection is long gone but you never got back to yourself.

Some people don't fully recover from an infection. The acute illness passes, the test comes back negative, and yet weeks or months later the fatigue, brain fog, unrefreshing sleep, and general sense of running at a fraction of your old capacity are still there. Conventional medicine often has little to offer at this stage, because there is no active infection left to treat and standard labs tend to look unremarkable. Patients are frequently told the virus is behind them and left to wonder why they still feel so unwell. The illness is real, and in most cases there are mechanisms behind it that can be investigated.

Our Experience in Healing Infections

At Helios, post-viral illness is familiar clinical territory. Dr. Brunschwig brings over 30 years of experience treating post-viral syndromes that conventional care has long struggled with, including Epstein-Barr and mononucleosis, West Nile virus, post-influenza states, Dengue fever, and varicella and herpes simplex reactivation, as well as Long Covid. What these conditions share is a pattern worth understanding: lingering inflammation, immune dysregulation, reactivation of latent viruses, mitochondrial dysfunction that leaves the body short on cellular energy, disrupted sleep and stress physiology, and often nutrient depletion and gut involvement that compound the burden. We evaluate these systematically rather than assuming recovery should simply happen on its own.

A waterfall flowing downhill through lush green trees and vegetation.

Treatment Plans & Outcomes

Treatment is built around what we find. Depending on your picture, it may include targeted antiviral and immune support, addressing the inflammation and reactivation driving symptoms, mitochondrial and nutritional repletion, IV nutrient therapy, sleep and stress recovery, gut restoration, and acupuncture and Chinese medicine, which pairs particularly well with functional medicine for the complex, multi-system nature of post-viral illness. The integration of these disciplines, grounded in an evolving scientific understanding of how these viruses behave, is what makes this kind of illness approachable rather than a dead end.

If an infection knocked you down and you never fully got back up, and no one has looked closely at why, we would like to take that closer look.

Schedule a consultation and let's find out what is keeping you from getting back to yourself.


You leave feeling as if you have been heard, valued, and knowing he is going to walk and work with you until your situation has been improved! Try him!

– Marny H., Current Patient

Ready to get a clearer picture of your heart health?

Schedule a consultation with our team in Boulder.