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Immune System

Frequent Colds & Infections

Strengthen immune defences and shorten illness duration

Key ingredients for frequent colds & infections

ElderberryPreliminary

anti-viral support · immune modulation

Popular for short-term cold/flu support.

EchinaceaPreliminary

immune stimulation

Short-term cold support in some trials.

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Top-rated products for frequent colds & infections

Products are filtered by in-stock availability, minimum 4-star rating, and affiliate-tracked links to iHerb.

#1

Seeking Health, Optimal Prenatal MF, 180 Capsules

Brand: Seeking Health

5.0(309 reviews)

Price estimate

37.50

Buy on iHerb
#2

Codeage, Skin Vitamins+, 30 Vegetable Capsules

Brand: Codeage

5.0(21 reviews)

Adults take 1 capsule daily, or as recommended by your healthcare practitioner, with 8 ounces of water or your favorite beverage.

Price estimate

45.48

Buy on iHerb
#3

Codeage, Liposomal Vitamin C+ Platinum, 180 Vegetable Capsules

Brand: Codeage

5.0(14 reviews)

Adults take 3 capsules daily, or as recommended by your healthcare practitioner, with 8 ounces of water or your favorite beverage.

Price estimate

60.66

Buy on iHerb
#4

Micro Ingredients, Liposomal Glutathione Complex, 120 Vegetarian Capsules

Brand: Micro Ingredients

5.0(3 reviews)

As a dietary supplement, adults take three (3) capsules daily. Preferably with meals or as directed by a healthcare professional.

Price estimate

24.40

Buy on iHerb
#5

Micro Ingredients, Magnesium Complex 20-in-1, For Women, 240 Vegetarian Capsules

Brand: Micro Ingredients

5.0(3 reviews)

As a dietary supplement, adults take two (2) capsules daily. Preferably with meals or as directed by a healthcare professional.

Price estimate

18.61

Buy on iHerb
#6

Solgar, Zinc Picolinate, 22 mg, 100 Tablets

Brand: Solgar

4.9(35,335 reviews)

As a dietary supplement for adults, take one (1) tablet daily, preferably with a meal or as directed by a healthcare practitioner.

Price estimate

9.60

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#7

Thorne, Zinc Picolinate, 15 mg, 60 Capsules

Brand: Thorne

4.9(25,845 reviews)

Take 1 capsule one to two times daily or as recommended by your health-care practitioner.

Price estimate

13.25

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#8

Swanson Vitamins, Zinc Picolinate, 22 mg, 60 Vegan Capsules

Brand: Swanson Vitamins

4.9(13,526 reviews)

As a dietary supplement, take one vegan capsule per day with food and water.

Price estimate

3.86

Buy on iHerb

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