As a result, some supplement products may not contain the ingredients listed on the label.

Whenchoosing a supplement, look for products independently tested or certified by organizations such asNSF,U.S.

Does Emergen-C Actually Work?

Packets of Pfizer Inc. Emergen-C brand immune support powder

Bloomberg / Contributor / Getty Images

However, Emergen-C’s actual effectiveness remains a topic of debate.

What’s In Emergen-C?

Emergen-C contains a variety of vitamins and minerals.

Electrolytes, like the ones found in Emergen-C, may help you stay hydrated while sick.

This combination of ingredients may help you fight a cold faster, but more research is necessary.

The ingredients in Emergen-C may vary from product to product, so be sure to read the nutrition label.

How Do You Use Emergen-C?

It’s recommended that you strictly follow the directions when using Emergen-C to minimize the risk of side effects.

Emergen-C dosage will depend on which product you choose to use.

The upper limit of vitamin C for adults is 2,000 mg per day.

Consuming too much vitamin C may cause side effects.

This reaction may cause shortness of breath, rash, and rapid heartbeat.

Don’t take Emergen-C if you are allergic to it or any of its ingredients.

See a healthcare provider if you are ever concerned about a cold or cold symptoms.

Summary

Emergen-C is a dietary supplement that may help you treat or prevent the common cold.

It contains a high dose of vitamin C as well as B vitamins, zinc, and other minerals.

Research shows that high-dose vitamin C may help reduce cold symptoms or shorten the duration of colds.

However, more research is necessary.

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MedlinePlus.How to treat the common cold at home.