Immunity

Japan's best-selling vitamin C supplement. Contains 1000mg vitamin C with vitamin B2 per daily dose of 2 hard capsules. Equivalent to approximately 33 lemons per capsule. Available in 30-day and 60-day packages.

Vitamin D3 1000 IU for immune, bone, and overall health.

Essential zinc for immune health, taste, and male function.

High-activity serrapeptase 120,000 SPU for inflammation support, pain relief, and sinus health

High-potency vitamin D3 for bone density, immune function, and mood support

Walmart's Equate brand high-potency vitamin D3 softgels for bone, immune, and mood support at an unbeatable value

Vitamin C enhanced with vitamin P (hesperidin) for improved absorption and efficacy

Vitamin D supplement for immune and bone health.

Concentrated black elderberry extract in capsule form for immune defense and upper respiratory support.

Doctor-formulated shelf-stable probiotic with 30 billion CFU and 14 strains

Certified organic, whole food vegan vitamin D3 from lichen

33 clinically studied probiotic strains with 100 billion CFU. Supports digestive health, immune function, and nutrient absorption.

100% pure ascorbic acid powder supplement for high-dose vitamin C intake

Respiratory support herbal liquid extract blend with mullein, thyme, and elecampane for healthy breathing.

Certified organic echinacea purpurea liquid extract for immune system activation and cold prevention support.

Classic vitamin C tablets at 500mg for daily immune support, antioxidant defense, and collagen production

Canada's trusted vitamin D3 softgels at 1000 IU to support bone strength, immune function, and mood during long Canadian winters

Multi-strain probiotic with 5 billion CFU and enteric coating for targeted delivery

Beneficial yeast probiotic with prebiotic MOS for digestive and immune health

Soy milk-based probiotic supplement with inactivated lactic acid bacteria from Kikkoman's fermentation expertise. Each sachet contains 1000 billion inactivated lactic acid bacteria. Unflavored powder.

Functional beverage with plasma lactic acid bacteria for immune support.

Professional-grade plasma lactobacillus supplement for enhanced immune function

High-potency vitamin C with rose hips for immune and antioxidant defense

Costco's value-sized USP-verified vitamin D3 for bone and immune health