1. Vitamin C: It is known for its immune-boosting properties and antioxidant effects. It can be found in various fruits and vegetables, as well as in supplement form.
2. Vitamin D: This vitamin plays a crucial role in immune function. It can be obtained from sunlight exposure, certain foods like fatty fish and fortified dairy products, or through supplementation if deficiency is suspected.
3. Zinc: Zinc is involved in numerous immune functions. It can be found in foods like oysters, meat, legumes, and nuts, or taken as a supplement.
4. Elderberry: Elderberry is a dark purple fruit rich in antioxidants. It is often consumed as a syrup or supplement and is believed to have immune-enhancing properties.
5. Echinacea: Echinacea is an herb commonly used to support immune health. It is available in various forms, including teas, extracts, and supplements.
6. Probiotics: These are beneficial bacteria that support a healthy gut microbiome, which plays a role in immune function. Probiotics can be found in fermented foods like yogurt and sauerkraut or taken as supplements.
7. Garlic: Garlic has been traditionally used for its immune-supportive properties. It contains compounds that may have antimicrobial and immune-enhancing effects.
8. Medicinal mushrooms: Certain mushrooms, such as reishi, shiitake, and maitake, are believed to have immune-boosting properties. They are available in supplement form or can be consumed as part of the diet.

Remember, while these supplements are commonly discussed for immune support, scientific evidence supporting their effectiveness can vary, and individual responses may differ. It’s always a good idea to consult with a healthcare professional for personalized advice based on your specific circumstances.