Why You Shouldn’t Jump to Antibiotics for Colds and Flus This Winter
- Dr. Ben Schwartz, ND,DC
- Nov 3, 2025
- 2 min read
As winter approaches, so do the sniffles, coughs, and sore throats that often send people rushing to the doctor for antibiotics. While antibiotics can be lifesaving when used appropriately, they are not the cure-all many believe them to be, especially when it comes to viral infections like the common cold or flu.
Antibiotics Don’t Work on Viruses
Antibiotics target bacteria, not viruses! Most colds, sore throats, and cases of the flu are viral, which means antibiotics won’t make you recover faster. In fact, unnecessary antibiotic use can do more harm than good.
The Hidden Cost of Overusing Antibiotics
When you take antibiotics unnecessarily, several things can happen:
Disruption of the gut microbiome: Antibiotics wipe out both harmful and beneficial bacteria. This loss of microbial diversity weakens your gut’s ability to regulate the immune system.
Increased intestinal permeability: Also known as “leaky gut,” this allows inflammatory molecules and toxins to enter the bloodstream, triggering immune activation.
Reduced immune resilience: Because 70% of your immune system resides in the gut, disrupting it can actually make you more prone to future infections.
Antibiotic resistance: Over time, bacteria adapt, making future infections harder to treat.
A Better Approach to Winter Wellness
Functional medicine takes a prevention-first and body-supportive approach. Instead of immediately turning to antibiotics, consider how to strengthen your natural defenses:
Prioritize sleep and manage stress, which directly influence immune function.
Support the gut microbiome with probiotics and fiber-rich foods.
Keep vitamin D, zinc, and vitamin C levels optimal.
Stay hydrated and include anti-inflammatory foods like garlic, ginger, turmeric, and green tea.
If symptoms are severe or persist beyond expected viral duration, your provider can determine whether antibiotics are truly necessary.
The Bottom Line
Antibiotics have a vital place in medicine, but only when they’re needed. Using them wisely protects your gut, your immune system, and your long-term health. This winter, think “support first” rather than “suppress fast.”
Your immune system is powerful, it just needs the right conditions to do its job."
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