Vitamins for Winter Immunity

When cold weather hits, so do colds, flu, and low energy. Instead of waiting to get sick, it’s time to boost your immune defense naturally—starting with the right vitamins.

Here’s the Ask Dr Olz-approved guide to the best vitamins for winter immunity and how to get them without leaving home.

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Why Immunity Takes a Hit in Winter

• Less sun = lower Vitamin D
• More indoor time = higher germ exposure
• Heavier meals = reduced gut health
• Cold weather = increased inflammation

To stay resilient, your immune system needs targeted support.

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Best Vitamins for Winter Immunity

1. Vitamin D3 1000 IU

Most South Africans are deficient—especially in winter. Vitamin D regulates immune cells, lowers inflammation, and helps prevent respiratory infections.

Dr Olz Pick: D3 1000 – Gentle daily dose for immune and hormone support.

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2. Vitamin C

A classic immune booster that enhances white blood cell function, reduces severity of colds, and supports collagen for healthy skin and gut lining.

Dr Olz Pick: Available in buffered forms to prevent stomach irritation.

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3. Zinc Glycinate

Zinc helps immune cells fight off viruses and bacteria. It also supports wound healing and protects the body during times of stress.

Dr Olz Pick: Zinc Glycinate – High bioavailability and gentle on the stomach.

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4. N-Acetyl Cysteine (NAC)

Supports detox, lung health, and mucus clearance—especially helpful for sinus congestion and post-viral fatigue.

Dr Olz Pick: Part of our functional immune detox support.

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5. Probiotics

70% of your immune system lives in your gut. Probiotics protect your barrier, crowd out bad microbes, and balance inflammation.

Dr Olz Pick: Ask Dr Olz Gut Support Protocol available on consult.

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Ask Dr Olz Winter Immunity Protocol Includes:

• ✅ Vitamin D3 1000
• ✅ Zinc Glycinate
• ✅ Buffered Vitamin C
• ✅ Probiotic & Gut Support
• ✅ Herbal extracts like echinacea & astragalus
• ✅ Optional: NAC + adaptogens for fatigue/stress-related immunity dips

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🛒 Where to Shop (Exclusively on askdrolz.com)

All supplements listed here are doctor-curated, clinically effective, and available at AskDrOlz.com—with virtual guidance when needed.

📦 Nationwide shipping
💬 Online consults available
🧪 Personalized winter immunity plans

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Dr Olz Final Tip:

Don’t wait for symptoms. Start your winter immunity protocol now and stay energized, clear-headed, and resilient all season long.

👉 Visit askdrolz.com to shop winter immunity supplements or book a virtual health check-in.