Emergen-C Products for Immune Support

Medically Reviewed by Beth Johnston, PharmD, BCPS on September 09, 2025
2 min read

Emergen-C products are dietary supplements that may be used to help support your immune system. Your immune system helps your body fight off infections. These products can contain a variety of electrolytes, B vitamins, antioxidants, and other nutrients. Vitamin C is found in all Emergen-C products. Different Emergen-C products may contain different types of vitamins and minerals.

Ingredient TypePurpose
Antioxidants like vitamin C and zincHelp protect your cells from damage
B vitaminsHelp your body turn the food you eat into energy
Electrolytes (minerals like calcium and potassium)Help keep you hydrated and help your muscles work correctly

There are some Emergen-C products that also contain herbal ingredients called Emergen-C Botanicals. These herbal ingredients can include ashwagandha, turmeric, ginger, apple cider vinegar, or elderberry.

Emergen-C comes in different forms: powder packets you mix with water, gummies, chewable tablets, or crystals you take right out of the packet without water.

Emergen-C products are usually safe for most people. Side effects can change based on the ingredients in the product. Always review the ingredients on the label of the specific product you choose. Stop using the medicine if you develop a rash or hives. Get medical help right away if you have signs of a serious allergic reaction, such as trouble breathing or swelling of the face, lips, or throat.

Emergen-C powder packets should be mixed with water (usually 4-6 ounces); however, more water can be mixed in if you want a lighter taste. Emergen-C crystals come in packets that you take by mouth, meaning no water is needed when taking these products.

Always check the label and do not take more than the recommended dose. Do not take more than 2,000 mg of Vitamin C per day. Taking too many electrolytes (from the supplement and other drinks/foods) can cause side effects like nausea or tiredness. Talk to your doctor if you are taking other electrolyte products.

If you are pregnant or breastfeeding, talk to your health care provider before taking an Emergen-C product.

There may be side effects, additional warnings, and interactions with medicines that are not listed here. These may vary depending on the combination of ingredients in the specific Emergen-C product you are using. Always check the label before taking any over-the-counter product. Do not take more than the recommended dose. Talk to your doctor or pharmacist about your health conditions and medicines to help determine which products are safe for you.

Use this guide to find the product that is best for your goal.

Primary GoalRecommended Products
Daily Immune Support 

Emergen-C Original Formula

Emergen-C Gummies

Emergen-C Chewables

Extra Immune SupportEmergen-C Immune+ with Triple Action
Sugar-Free Immune SupportEmergen-C Zero Sugar
Easy-to-Take Immune Support

Emergen-C Immune+ Crystals

Emergen-C Crystals

Immune Support for Children

Emergen-C Kidz Gummies

Emergen-C Kidz Immune+ Crystals

Emergen-C Kidz Crystals

Botanical Immune Support

Emergen-C Ashwagandha

Emergen-C Apple Cider Vinegar

Emergen-C Botanicals Turmeric and Ginger

Emergen-C Elderberry