E.E.S. ®
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Reviewed on October 17, 2025. by
Dr Alexandra Cristina Cowell
Writer & Clinical Content Reviewer
Next review due on
October 17, 2028.
Dr Alexandra Cristina Cowell

Last updated on Oct 17, 2025.

Once-daily antibiotic tablet for infected follicles.

E.E.S. is a type of antibiotic tablet that’s effective against bacteria that can cause folliculitis. It’s only effective against bacterial folliculitis, and won’t help if your folliculitis is caused by fungi, a virus, or other causes. You’ll usually take it for four-to-six weeks to treat bacterial folliculitis.

Price checker
400mg
$837.95
  • Prices include:
    Express shipping

    2-5 day shipping by secure courier

  • Consultation + Access to our clinicians

    Ask our experts anything you like, any time you want.

  • Total
    $837.95
    Save $0.00 each order
E.E.S. Erythromycin

What is E.E.S.?

E.E.S. is an oral antibiotic that stops certain bacteria from growing and reproducing, eventually killing off the infection. You’ll take it every day to help fight off folliculitis caused by bacterial infections.

How does E.E.S. work?

E.E.S. is a type of macrolide antibiotic. This means it interferes with the production of essential proteins that the bacteria that can cause folliculitis need to grow and reproduce. This should stop the infection from spreading any further, and eventually clear it up.[1]

How do E.E.S. doses work?

E.E.S. tablets come in one dose: 400 mg. E.E.S. can also come in a liquid suspension, or granules that you dissolve into a liquid – but we don’t stock those right now.

What is the active ingredient in E.E.S.?

The active ingredient in E.E.S. is called erythromycin ethylsuccinate – that’s where the name E.E.S. comes from. It’s a type of macrolide antibiotic, which means it stops bacteria producing proteins essential to their survival and reproduction.

Treated trusted source:

  1. Hashmi, M.F. Patel, P.H. (2023). Macrolides. StatPearls. Treasure Island (FL): StatPearls Publishing.
Dr Alexandra Cristina Cowell
This page was medically reviewed by Dr Alexandra Cristina Cowell on October 17, 2025. Next review due on October 17, 2028.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

E.E.S. Erythromycin

How to take E.E.S.

You should always take E.E.S. exactly as your clinician has instructed. Usually, you’ll take one tablet twice daily for seven days to clear up the bacteria that can cause folliculitis.[1] Your doctor may suggest continuing the treatment for a longer period if they think this will benefit you.

Treated trusted source:

  1. Riain, U.N. (2013). Recommended management of common bacterial skin infections. Drug Review.
Dr Alexandra Cristina Cowell
This page was medically reviewed by Dr Alexandra Cristina Cowell on October 17, 2025. Next review due on October 17, 2028.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

E.E.S. Erythromycin

E.E.S. isn’t suitable for everyone, and there are some things that you need to be aware of when taking it.

Here’s all the official info on it. If anything is unclear, let our clinician know, and they can talk with you about it.

E.E.S. Erythromycin

E.E.S.: FAQ

Have something specific you want to know? Search our info below, or ask our experts a question if you can’t find what you’re looking for.

Are there any E.E.S. alternatives?

Answer:
Yes; there are a few different options available for folliculitis treatment. For folliculitis caused by a bacterial infection, topical antibiotics (like mupirocin or clindamycin) that you apply to the affected area are usually the first line treatment. If your folliculitis is caused by a fungal infection, antifungals like fluconazole and itraconazole will be the first line option.

If bacterial folliculitis is more severe, or topical methods haven’t worked, other oral antibiotics like flucloxacillin, cephalexin, or dicloxacillin could be more effective alternatives.

How effective is E.E.S.?

Answer:
E.E.S. has proven to be an effective treatment for skin infections like folliculitis caused by bacterial infections. One study reported that 500 mg of oral erythromycin killed off the bacteria responsible for folliculitis in 78% of people taking it.[1]

Do I need a prescription for E.E.S.?

Answer:
Yes. Erythromycin is an antibiotic, which means you’ll need a prescription before you take it. Not all cases of folliculitis are caused by bacteria, and if you take erythromycin to treat fungal folliculitis, not only will it not be effective – it can also make antibiotics less effective if you need to use them in the future. A healthcare professional will check to make sure E.E.S. is an effective treatment for your folliculitis.

How long does it take E.E.S. to work?

Answer:
You’ll usually take E.E.S. for one week to clear up folliculitis. If it hasn’t worked after seven days, speak to your doctor about possible alternatives.

Are there any E.E.S. side effects?

Answer:
Like any medication you take, E.E.S. could cause some side effects (but they don’t affect everyone). If you get a red, scaly rash with bumps under the skin and blisters, contact your doctor immediately. This could be signs of a serious skin reaction called exanthematous pustulosis.

Likewise, if you notice any of the following symptoms, stop taking your medicine and contact a doctor right away – they could be signs of an allergic reaction:

  • Difficulty breathing

  • Fainting

  • Swelling in your face, lips, or throat

  • Severe skin reactions (large blisters, sores, ulcers in the mouth or throat)


Other E.E.S. side effects could include:

  • Diarrhea

  • Nausea or vomiting

  • Stomach pains (this could be a sign of pancreatitis)

  • Ringing in the ears

  • Reversible loss of hearing

  • Yellowing of the eyes or skin (this could be a sign of liver or gall bladder problems)

  • Chest pain

  • Irregular or elevated heart rate

  • Fever

  • Loss of appetite

  • Confusion

  • Seizures

  • Vertigo

  • Hallucinations

  • Low blood pressure

  • Blurred vision

What should I do if I make a mistake when taking E.E.S.?

Answer:
If you forget to take E.E.S., take the missed dose as soon as you remember – unless it’s almost time for your next dose. If this is the case, skip the dose that you missed, and carry on as normal from your next one. Never take a double dose to make up for missing a tablet.

If you take more E.E.S. than you should, contact your doctor or head to the hospital right away. Common symptoms of E.E.S. overdose include temporary hearing loss, nausea, vomiting, and diarrhea.

Can I get E.E.S. through private health insurance?

Answer:
Like most medications, it can vary depending on your treatment plan and coverage. Some insurance providers will also only cover medication obtained from specific healthcare providers. To find out the cost of erythromycin for you, it’s best to speak with your doctor and insurance provider.

If you can’t get E.E.S. through your health insurance, you should still be able to obtain it online from a private pharmacy service.

Treated trusted source:

  1. R. Daniel. (1991). Azithromycin, erythromycin and cloxacillin in the treatment of infections of skin and associated soft tissues. European Azithromycin Study Group. Journal of International Medical Research. 19(6). pp. 433-445.

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