5 Key Nutrients to Stay Healthy This Cold and Flu Season
As temperatures drop and daylight shortens, your immune system works overtime to keep you well. Seasonal stress, travel, and less sunlight can all make you more vulnerable to viruses — which means this is the perfect time to focus on nutritional support. The right blend of vitamins, minerals, and antioxidants can make a measurable difference in how your body fights infection and recovers.
At Flow Wellness, we believe prevention starts at the cellular level. Here are five essential nutrients that keep your immune system strong and resilient through cold and flu season.
1. Vitamin C – The First Line of Defense
Vitamin C is one of the most powerful antioxidants in the body. It helps protect immune cells from oxidative stress, supports collagen production (essential for skin and tissue repair), and enhances white blood cell function.
Because our bodies don’t store or produce vitamin C, consistent intake is key — whether through citrus fruits, bell peppers, or targeted supplementation. For a stronger boost, IV vitamin therapy can deliver high-dose vitamin C directly into your bloodstream for optimal absorption.
Clinical insight: Research shows that adequate vitamin C can reduce the duration and severity of respiratory infections by supporting immune cell activity.
Learn more about our IV Vitamin Therapy
2. Vitamin D – The Sunshine Vitamin for Immune Balance
Vitamin D regulates immune response and helps prevent excessive inflammation. Low levels are linked to increased susceptibility to upper respiratory infections.
During winter, limited sunlight exposure makes deficiency common — particularly in northern regions like Oregon and Washington. A simple blood test can check your levels, and vitamin D supplementation (often paired with vitamin K2) can restore immune balance and improve overall wellness.
Pro tip: Take vitamin D with a meal that includes healthy fats for better absorption.
Interested in checking your levels? Schedule a visit.
3. Zinc – The Antiviral Mineral
Zinc plays a crucial role in the development and function of immune cells, and even mild deficiencies can impair immune defense. Studies show zinc may shorten the duration of cold symptoms when taken at the onset.
Good dietary sources include shellfish, seeds, nuts, and lean meats. Supplementation or prescription-grade zinc blends can be particularly useful during early illness or times of stress when immune demand is higher.
Ask your provider about our prescription supplement recommendations.
4. Vitamin B12 – The Energy and Recovery Supporter
Vitamin B12 is essential for red blood cell formation, nerve function, and DNA synthesis — but it also supports immune resilience by promoting energy metabolism and cell repair.
Low B12 can contribute to fatigue, weakness, and slower recovery from illness. Injectable or sublingual B12 can help maintain energy, enhance immune response, and support your body’s natural detox pathways.
At Flow Wellness, we often pair B12 with other immune-supportive nutrients in our IV and injectable formulas to provide rapid replenishment during illness or recovery.
Try a B12 Shot or home injection.
5. Glutathione – The Master Antioxidant
Glutathione is produced naturally in the body, but stress, illness, and aging deplete levels over time. It protects against cellular damage, supports liver detoxification, and enhances immune system performance.
IV glutathione or intramuscular injections can help restore your body’s antioxidant capacity — improving recovery time, mental clarity, and immune strength.
Bonus: Glutathione helps recycle other antioxidants like vitamin C and E, amplifying their protective benefits.
Discover our Glutathione IV/injected Therapy
Strengthen Immunity from the Inside Out
A strong immune system isn’t built overnight — it’s supported daily through balanced nutrition, rest, movement, and targeted supplementation. If you find yourself getting sick frequently or recovering slowly, that’s your body signaling it needs extra support.
At Flow Wellness, we offer customized immune-boosting IVs, injections, and supplement protocols designed to help your body adapt and thrive all year long. Whether it’s a quick vitamin C + zinc shot or a comprehensive IV drip with glutathione and B12, we can help you strengthen your defenses from the inside out.
Ready to support your immune system this season?
Schedule your Immunity IV, B12 shot, or telehealth supplement consult today.
Book an IV/injection Appointment at our Bend, Oregon clinic
Book a prescription supplement consultation
Disclaimer: This blog post is for informational purposes only and should not be considered medical advice. Always consult with a healthcare provider for personalized medical advice. IV/Injected vitamin formulations are not FDA approved and not indicated for any medical condition.
