Author: Andriy Duyko, founder of Tibetan Formula — a phytotherapist with over 20 years of experience in natural medicine and nutrition.
Why spring and autumn are the most dangerous seasons for immunity
Spring and autumn are traditional "peaks" for ARVI, flu, and colds. The reason is simple: sharp temperature changes, changes in daylight duration, and seasonal vitamin deficiencies weaken the body's defenses.
According to WHO data, during transitional seasons, the incidence of respiratory infections increases by 30–40% compared to summer and winter periods. That is why immune prevention in spring and autumn is not a whim but a necessity.
In this article, we will look at which vitamins and supplements really work, how to combine them properly, and which Tibetan Formula products will help your body stay strong all year round.
Top 5 nutrients for seasonal immunity
1. Vitamin C — the antioxidant shield
Vitamin C is one of the most studied immunomodulators. It stimulates the production of white blood cells, supports the barrier function of the skin and mucous membranes, and is a powerful antioxidant.
A meta-analysis of 29 studies (Hemilä & Chalker, 2013) showed that regular vitamin C intake reduces the duration of colds by 8% in adults and 14% in children. [PubMed]
Recommended dose: 500–1000 mg per day during the preventive season.
For children, we recommend Vitamin C Kids 250 mg — immunity, antioxidant 120 tabs from Tibetan Formula.
2. Zinc — the mineral of immune response
Zinc is essential for the normal functioning of T-lymphocytes and NK cells (natural killers). Its deficiency directly suppresses the immune response.
A study published in the Open Respiratory Medicine Journal (2011) showed that taking zinc within the first 24 hours after cold symptoms appear reduces its duration by 33%. [PubMed]
Recommended dose: 15–30 mg per day.
Check out Zinc Gluconate 50 mg — immunity, skin, hair 120 tabs from Tibetan Formula.
3. Vitamin D — the "sunshine" immunomodulator
In autumn and winter, vitamin D levels in the body sharply drop due to reduced sunlight. This is one of the key factors in seasonal immunity decline.
A systematic review of 25 randomized trials (Martineau et al., 2017) confirmed that vitamin D supplements reduce the risk of acute respiratory infections by 12%. [PubMed]
Recommended dose: 1000–2000 IU per day (after blood test).
4. Plant adaptogens — natural resilience
Adaptogens are plants that increase the body's resistance to stress, infections, and adverse environmental conditions. The most studied among them:
- Echinacea — reduces the duration of colds and lowers the risk of occurrence by 35%. [PubMed]
- Hawthorn — rich in flavonoids and vitamin C, supports the cardiovascular system and immunity.
- Ginger — anti-inflammatory and antimicrobial effects, supports the upper respiratory tract.
5. Complex herbal remedies — synergy of natural components
The most effective approach is combining several natural components in a balanced formula. This principle underlies the Tibetan Formula herbal remedies.
Tibetan Formula products for seasonal immunity
For adults
Imunogrand — herbal remedy for immunity 90/360 tabs — a comprehensive product based on natural ingredients to strengthen adult immunity. Convenient 90-tab format for a monthly course or 360 tabs for long-term prevention.
Imunogrand tea — herbal blend for immunity 30 bags — a tasty and healthy way to support immunity daily. Perfect as a supplement to the main course or for those who prefer liquid forms.
Imusil drops — herbal remedy for immunity 50 ml — liquid form for rapid absorption of active substances. Contains hawthorn, ginger, mint, and pepper — a natural complex to activate the body's defenses.
For children
Immunogrand for children — herbal immune supplement 120/720 tablets — a gentle formula specially designed for children’s bodies. Helps strengthen the child’s immunity during cold season.
Children’s Vitamin C 250 mg — 120 tablets — the optimal dose of vitamin C for children in a convenient tablet form.
Real cases: how seasonal prevention works
Case 1: Prevention for the whole family
A family of two adults and two school-age children from Kyiv. Every autumn, all four got sick 2–3 times. In 2025, they started a course of Immunogrand (adults) and Immunogrand for children (kids) 2 weeks before the school year began. Result: during the autumn-winter season, no family member was sick more than once, and the duration of illness was halved.
Case 2: Spring avitaminosis
Woman, 34 years old, manager. Every spring she suffered from chronic fatigue, frequent colds, and low mood. After consulting a doctor, she started taking vitamin D, zinc, and Immunogrand tea. After just 3 weeks, she noticed increased energy and no cold symptoms throughout the entire spring season.
How to properly create a supplement intake plan
Effective immune prevention is not random supplement intake but a well-thought-out plan:
- Start 2–3 weeks before the cold season begins (late August – early September for autumn; late February – early March for spring)
- Course duration — at least 4–6 weeks to achieve a lasting effect
- Combine vitamins (C, D) with herbal complexes for a synergistic effect
- Don’t forget the basic rules: adequate sleep, physical activity, balanced nutrition
Important: consult a doctor before starting any supplements, especially if you have chronic illnesses or are taking medications.
FAQ: Frequently Asked Questions about Vitamins and Immune Supplements
When is the best time to start taking immune supplements — in spring or autumn?
Ideally — in both seasons. Start a preventive course 2–3 weeks before the peak of illness: in August-September for the autumn season and in February-March for the spring season.
Is it possible to combine several dietary supplements at the same time?
Yes, most natural supplements combine well with each other. For example, vitamin C + zinc + herbal complex is a classic prevention scheme. However, always consult your doctor before combining with medications.
How long does it take for immune supplements to start working?
The first effects are usually felt after 2–3 weeks of regular use. For a lasting result, a course of at least 4–6 weeks is recommended.
Are the same supplements suitable for both children and adults?
No. There are special formulas for children with adapted dosages. Tibetan Formula offers separate lines for adults and children.
Can immune supplements be taken all year round?
Some supplements (such as vitamin D) are recommended for year-round use in temperate climates. Herbal complexes are better taken in courses with breaks. Determine the specific regimen together with your doctor.
Which supplements are most effective at the first signs of a cold?
At the first symptoms, zinc (within the first 24 hours), high doses of vitamin C, and herbal remedies with echinacea or ginger are especially effective. It is important to start taking them as early as possible.
Conclusion
Spring and autumn 2026 are no reason to get sick. Proper prevention with vitamin C, zinc, vitamin D, and natural phytocomplexes will help your body stay strong in any season.
Start prevention early, choose quality products, and don’t forget a healthy lifestyle — and colds will pass you by.
Tibetan Formula products for seasonal immunity:
- Immunogrand — herbal immune supplement 90/360 tablets
- Immunogrand tea — herbal blend 30 sachets
- Imusil drops — herbal immune supplement 50 ml
- Immunogrand for children — 120/720 tablets
- Children's Vitamin C 250 mg — 120 tablets
- Zinc gluconate 50 mg — 120 tablets
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