Immune 4
California Gold Nutrition
Immune 4
4.7
★ ★ ★ ★ ★
(181677 ratings)
Vitamin C 500 mg
Selenium 50 mcg
Score 75.0
Immune 4 offers a simple yet effective blend of Vitamin C and Selenium, crucial for immune system support and antioxidant defense. It utilizes well-absorbed forms of these essential nutrients, contributing to general health and anti-aging goals. With a high volume of positive reviews and a reasonable price per serving, it stands as a popular and accessible daily supplement.
Quantity: 180 Capsule(s)Servings size: 1 Capsule(s) (180 servings)
Selected goals:
Other goals:
Immunity
General Health
Skin Health
Anti-Aging
Anti-Inflammatory Support
leaderboard Score 75.0
Immune 4 offers a simple yet effective blend of Vitamin C and Selenium, crucial for immune system support and antioxidant defense. It utilizes well-absorbed forms of these essential nutrients, contributing to general health and anti-aging goals. With a high volume of positive reviews and a reasonable price per serving, it stands as a popular and accessible daily supplement.
insights Analysis
California Gold Nutrition's Immune 4 is a direct and well-received supplement designed to support the body's natural defenses and overall wellness. It combines 500mg of Vitamin C (as Ascorbic Acid) with 50mcg of Selenium (as L-Selenomethionine), two key nutrients widely recognized for their antioxidant and immune-modulating properties. This formulation targets general health and anti-aging benefits by combating oxidative stress and supporting cellular function. The product's large serving size per bottle offers good value over time, making it a convenient option for daily supplementation.
- Contains two crucial immune-supporting ingredients: Vitamin C and Selenium.
- Uses highly bioavailable forms: Ascorbic Acid for Vitamin C and L-Selenomethionine for Selenium.
- Offers a good dose of Vitamin C (500mg) for daily support.
- Excellent value with 180 servings per bottle at a competitive price per serving.
- Very high number of positive customer reviews indicate widespread satisfaction.
- The Selenium dose (50mcg) is relatively low compared to some standalone Selenium supplements which often provide 100-200mcg.
- The product only contains two ingredients, limiting the breadth of its immune support compared to multi-ingredient immune formulas.
- Does not include other widely recognized immune-boosting nutrients like Vitamin D or Zinc.
$15.00($0.08 per serving)
 iHerb | $ 15.00 |
bolt Effectiveness for goals
Vitamin C is essential for collagen synthesis, a protein vital for skin elasticity and structure. It also acts as an antioxidant, protecting skin from environmental damage and reducing hyperpigmentation. Topical and dietary Vitamin C contribute to brighter, healthier-looking skin.
Regular Vitamin C supplementation may slightly reduce the duration or severity of the common cold in some individuals, particularly those undergoing severe physical stress. For the general population, its preventive effects are modest. High doses after cold onset typically do not show significant benefits.
Selenium is essential for proper thyroid gland function, as it is a component of selenoproteins involved in thyroid hormone metabolism. These selenoproteins help protect the thyroid from oxidative damage and regulate thyroid hormone synthesis. Adequate selenium intake is crucial for maintaining thyroid health.
Yes, Vitamin C is a powerful antioxidant that helps protect cells from damage caused by free radicals. It neutralizes reactive oxygen species, contributing to overall cellular health. This antioxidative property is one of its primary biological functions.
Yes, selenium is a key component of several antioxidant enzymes, such as glutathione peroxidases. These enzymes play a vital role in protecting cells from oxidative damage caused by free radicals. This contributes significantly to the body's overall antioxidant defense system.
schedule Dosage, timing & forms
Generally, Vitamin C and selenium can be taken together. Some older research suggested that very high doses of Vitamin C might theoretically interfere with the absorption of certain inorganic forms of selenium (like selenite) if taken simultaneously. However, this interaction is considered less significant with organic selenium forms (like selenomethionine) and with typical supplement doses.
While generally compatible, some individuals choose to take Vitamin C and selenium at different times to be cautious, especially if taking inorganic selenium forms. For most common organic selenium supplements (e.g., selenomethionine) and typical Vitamin C doses, taking them together is usually fine. Always refer to product specific guidelines for clarity.
The Recommended Dietary Allowance (RDA) for adult men is 90 mg per day and for adult women is 75 mg per day. Supplemental doses often range from 250 mg to 1000 mg daily, depending on individual needs and product formulations. It's important to consider your overall dietary intake when determining supplement amounts.
The Recommended Dietary Allowance (RDA) for adult men and women is 55 micrograms (mcg) per day. Supplemental doses typically range from 50 to 200 mcg. It is generally advised not to exceed the Tolerable Upper Intake Level (UL) of 400 mcg per day from all sources.
Vitamin C can generally be taken at any time of day, with or without food. Some individuals prefer to split larger doses throughout the day to optimize absorption and maintain consistent levels. Taking it with food may help prevent mild stomach upset in sensitive individuals.
health_and_safety Safety & interactions
High doses of Vitamin C, typically above 2,000 milligrams (mg), can cause gastrointestinal issues such as diarrhea, nausea, and abdominal cramps. It may also lead to heartburn in some individuals. These effects usually resolve upon reducing the dosage.
Vitamin C can potentially interact with some medications, such as blood thinners (warfarin), certain chemotherapy agents, and drugs that lower cholesterol (statins). It is important to discuss any supplement use with a healthcare provider, especially if taking prescription drugs. High doses might also interfere with some diagnostic tests.
Excessive selenium intake, known as selenosis, can lead to symptoms such as hair loss, brittle nails, gastrointestinal upset, and fatigue. In severe cases, it may cause nerve damage, liver damage, or heart problems. The Tolerable Upper Intake Level for adults is 400 micrograms (mcg) per day.
Yes, for adults, the Tolerable Upper Intake Level (UL) for Vitamin C is 2,000 milligrams (mg) per day. Intake above this level increases the likelihood of experiencing gastrointestinal disturbances like diarrhea. This limit helps prevent adverse effects from excess intake.
In some susceptible individuals, very high intakes of Vitamin C (typically above 2,000 mg/day) may increase urinary oxalate excretion, which is a risk factor for kidney stone formation. However, this risk is generally considered low for most healthy individuals. People with a history of kidney stones should consult a healthcare professional.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Vitamin C | 500 mg |
Vitamin D | 25 mcg |
Zinc | 10 mg |
Selenium | 50 mcg |
Categories
Vitamin C 85.0
The product provides 500mg of Vitamin C as Ascorbic Acid, which is a standard and effective daily dose for maintaining adequate levels and supporting immune function. Ascorbic acid is a widely recognized and well-researched form of Vitamin C.
Selenium 65.0
It contains 50mcg of Selenium in the L-Selenomethionine form, which is highly bioavailable and well-utilized by the body. While beneficial for general maintenance and antioxidant support, the dosage is on the lower side compared to common standalone Selenium supplements, which often offer 100-200mcg for more targeted benefits.
Goals
Immunity 85.0
Both Vitamin C and Selenium are fundamental for a healthy immune system, supporting various cellular functions involved in defending against pathogens. Vitamin C is a powerful antioxidant that enhances white blood cell function, while Selenium plays a role in the production of immune cells and the regulation of immune responses.
General Health 80.0
Vitamin C is vital for collagen formation, iron absorption, and overall tissue repair, contributing broadly to general well-being. Selenium supports thyroid function and acts as a crucial antioxidant, which helps protect cells from damage, underpinning overall health.
Anti-Aging 80.0
Both Vitamin C and Selenium are potent antioxidants that combat oxidative stress, a primary driver of cellular aging. By neutralizing free radicals, they help preserve cellular integrity and reduce damage to DNA, proteins, and lipids, thus supporting anti-aging processes.
Recommended Alternatives
90 Value 
C 500 mg
21st Century
4.8
★★★★★
(31743 ratings)
With a price per serving of 2 compared to Immune 4's 8, this product delivers the same 500mg dose of Vitamin C at a quarter of the cost per serving, making it an extremely cost-effective option for daily Vitamin C intake.
92 Value 
Selenium 100 mcg
Swanson
4.8
★★★★★
(3280 ratings)
This alternative offers double the Selenium content of Immune 4 (100mcg vs 50mcg) at a significantly lower price per serving (2 vs 8), providing superior value for targeted Selenium supplementation with a higher dose per dose.
85 Value 
C 500 mg
Nature's Bounty
4.7
★★★★★
(1168 ratings)
Offering 500mg of Vitamin C at a price per serving of 3, this product provides comparable efficacy to Immune 4's Vitamin C component at a much lower per-serving cost, representing excellent value for essential antioxidant support.
90 Performance 
ProFema
Pure Essence
4.6
★★★★★
(251 ratings)
This product provides significantly higher dosages of both Vitamin C (1000mg vs 500mg) and Selenium (150mcg vs 50mcg) than Immune 4, offering potentially enhanced immune support and antioxidant benefits, albeit at a higher price point per serving.
88 Performance 
Ancient Multi Immune+
Ancient Nutrition
4.8
★★★★★
(685 ratings)
While its Vitamin C dose is lower, this product offers a substantially higher Selenium dose (400mcg) and is formulated as a 'Multi Immune+,' implying a broader blend of ingredients targeting comprehensive immune support beyond just Vitamin C and Selenium, making it a more holistic choice.
85 Performance 
Alive! Once Daily Women's Ultra Potency
Nature's Way
4.7
★★★★★
(61246 ratings)
As a comprehensive multivitamin, this product offers a wide array of essential vitamins and minerals, including a significantly higher dose of Selenium (250mcg) and a moderate amount of Vitamin C (120mg). It provides broader nutritional support for general health and immunity compared to a two-ingredient blend.
75 Budget
C 500 mg
21st Century
4.8
★★★★★
(31743 ratings)
This alternative offers the exact same Vitamin C dosage (500mg) as the original product for a significantly lower total price (719 vs 1500), making it a much more economical choice if you are primarily seeking Vitamin C benefits.
78 Budget 
C-500 With Rose Hips
NOW
4.9
★★★★★
(10235 ratings)
Providing 500mg of Vitamin C with added Rose Hips for potential enhanced absorption and antioxidant benefits, this product is considerably cheaper than Immune 4 (600 vs 1500), offering great value for its comprehensive Vitamin C profile.
70 Budget
Selenium 100 mcg
Swanson
4.8
★★★★★
(3280 ratings)
This product offers double the amount of Selenium (100mcg) compared to Immune 4, in a well-absorbed form (Selenium SeLECT L-Selenomethionine), for a total price that is less than half (584 vs 1500), representing a cost-effective way to boost Selenium intake.
90 Value
C 500 mg
21st Century
4.8
★★★★★
(31743 ratings)
With a price per serving of 2 compared to Immune 4's 8, this product delivers the same 500mg dose of Vitamin C at a quarter of the cost per serving, making it an extremely cost-effective option for daily Vitamin C intake.
92 Value
Selenium 100 mcg
Swanson
4.8
★★★★★
(3280 ratings)
This alternative offers double the Selenium content of Immune 4 (100mcg vs 50mcg) at a significantly lower price per serving (2 vs 8), providing superior value for targeted Selenium supplementation with a higher dose per dose.
85 Value
C 500 mg
Nature's Bounty
4.7
★★★★★
(1168 ratings)
Offering 500mg of Vitamin C at a price per serving of 3, this product provides comparable efficacy to Immune 4's Vitamin C component at a much lower per-serving cost, representing excellent value for essential antioxidant support.
90 Performance
ProFema
Pure Essence
4.6
★★★★★
(251 ratings)
This product provides significantly higher dosages of both Vitamin C (1000mg vs 500mg) and Selenium (150mcg vs 50mcg) than Immune 4, offering potentially enhanced immune support and antioxidant benefits, albeit at a higher price point per serving.
88 Performance
Ancient Multi Immune+
Ancient Nutrition
4.8
★★★★★
(685 ratings)
While its Vitamin C dose is lower, this product offers a substantially higher Selenium dose (400mcg) and is formulated as a 'Multi Immune+,' implying a broader blend of ingredients targeting comprehensive immune support beyond just Vitamin C and Selenium, making it a more holistic choice.
85 Performance
Alive! Once Daily Women's Ultra Potency
Nature's Way
4.7
★★★★★
(61246 ratings)
As a comprehensive multivitamin, this product offers a wide array of essential vitamins and minerals, including a significantly higher dose of Selenium (250mcg) and a moderate amount of Vitamin C (120mg). It provides broader nutritional support for general health and immunity compared to a two-ingredient blend.