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PubMed This is a summary of 17 peer-reviewed journal articles Updated
Infectious Disease

Treatment & Management: Antibiotics and Supportive Care

At a Glance

Whooping cough is primarily treated with macrolide antibiotics to clear the bacteria and prevent transmission. While antibiotics may not shorten the cough if started late, finishing the 5-day course is essential. Manage symptoms at home with upright positioning, small meals, and hydration.

Managing whooping cough is often an exercise in patience. While the diagnosis can be frightening, treatment is focused on two main goals: clearing the bacteria to stop the spread and supporting the body as it heals from the damage the bacteria caused [1][2].

Antibiotics: The Race Against Time

The most common treatment for pertussis is a group of antibiotics called macrolides.

  • Common Macrolides: These include azithromycin (often a 5-day course), clarithromycin, and erythromycin [1][3].
  • The Window of Opportunity: Antibiotics are most effective at reducing symptoms if they are started in the catarrhal stage (the first 1–2 weeks), before the violent coughing fits begin [1][4].
  • Why They “Don’t Work” Later: If you start antibiotics once the paroxysmal (violent coughing) stage has already begun, they usually will not shorten the duration of the cough [5][1]. This is because the bacteria have already damaged the airway, and the cough is your body’s response to that damage—not the active infection itself [2].

Stopping the Spread and Isolation Rules

Even if antibiotics don’t stop your cough, finishing the full course is vital. It clears the bacteria from your nose and throat to protect vulnerable people around you.

  • If you take antibiotics: You are considered contagious until you have completed 5 full days of appropriate antibiotics [6][7]. Do not return to work, school, or daycare until those 5 days are complete.
  • If you do not take antibiotics: You must isolate for 21 days after the onset of the cough, as you remain contagious for that entire period [8].

Alternatives for Resistance or Allergies

In some regions, the bacteria have started to show macrolide resistance, meaning common antibiotics don’t work as well [9][10]. In these cases, or if you have a macrolide allergy, doctors may prescribe Trimethoprim-sulfamethoxazole (TMP-SMX), a sulfa-based antibiotic [11][12].

Managing the Cough at Home

It is natural to want to reach for over-the-counter (OTC) medicines, but with whooping cough, many traditional remedies are ineffective.

  • Cough Syrups and Suppressants: Research generally shows that OTC cough medicines do not help with the specific type of coughing fits caused by pertussis [13].
  • Practical Cough Tips: When a coughing fit strikes, try to sit upright and lean forward slightly to help open the airway. Taking small, frequent sips of water can also help soothe the throat.
  • Sleep Adjustments: Because coughing is often worse at night, try propping yourself or your child up on extra pillows. Sleeping in a slightly elevated position can reduce the pooling of mucus that triggers nighttime fits.
  • Supportive Care:
    • Small, Frequent Meals: Because coughing fits often lead to vomiting (post-tussive emesis), eating smaller amounts more often can help ensure nutrition is kept down [14].
    • Hydration: Sip water or electrolyte drinks throughout the day to prevent dehydration, especially if vomiting is frequent [14].
    • Moist Air: Using a cool-mist humidifier may help soothe irritated airways.
    • Warning: Never give honey to infants under 1 year of age to soothe a cough, as it carries a serious risk of infant botulism.

When to Monitor Closely

For infants and young children, home care requires constant vigilance. Infants are at the highest risk for apnea (pauses in breathing) and may need to be hospitalized for monitoring even if they don’t “look” very sick between coughing fits [15][16]. If a child turns blue or pale during a fit, or if they are unable to keep any fluids down, seek emergency care immediately [17]. For a deeper dive into infant complications, read our High-Risk Scenarios page.

Common questions in this guide

Will antibiotics cure my whooping cough and stop the coughing?
Antibiotics clear the bacteria and stop you from spreading the infection to others. However, if they are started after the severe coughing fits have already begun, they usually will not shorten the duration of the cough because your airway is already inflamed.
How long am I contagious with whooping cough?
If you are taking antibiotics, you are contagious until you have completed 5 full days of the medication. If you are not taking antibiotics, you remain contagious and must isolate for 21 days after your cough first started.
Can I use over-the-counter cough syrup for whooping cough?
No, research shows that traditional over-the-counter cough syrups and suppressants do not help with the specific, violent coughing fits caused by whooping cough. Instead, try drinking frequent sips of water and using a cool-mist humidifier.
How should I eat and drink when I have severe coughing fits?
Because violent coughing fits can trigger vomiting, eating smaller amounts more frequently can help you keep food down. It is also important to sip water or electrolyte drinks throughout the day to prevent dehydration.
Why did my doctor prescribe a sulfa drug instead of a standard antibiotic?
If you have an allergy to macrolide antibiotics (like Z-Packs) or live in an area where whooping cough bacteria are resistant to standard treatments, your doctor may prescribe a sulfa-based antibiotic called Trimethoprim-sulfamethoxazole (TMP-SMX) as an alternative.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Which specific antibiotic is my child being prescribed, and why is it the best choice for their age?
  2. 2.Since we are already [X] days into the coughing fits, will this antibiotic help reduce the cough, or is it just to stop the spread?
  3. 3.What should I do if my child vomits up their dose of antibiotics immediately after taking it?
  4. 4.Are there any risks for heart rhythm issues (QT prolongation) with this specific macrolide?
  5. 5.At what point should we seek hospital care for dehydration if the vomiting continues?

Questions For You

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References

References (17)
  1. 1

    Clinical Findings and Management of Pertussis.

    Polinori I, Esposito S

    Advances in experimental medicine and biology 2019; (1183()):151-160 doi:10.1007/5584_2019_410.

    PMID: 31359365
  2. 2

    Effects of Early Administration of Macrolides on Whooping Cough in Adolescents and Adults: A Single-center Retrospective Cohort Study.

    Amemiya T, Iwakami SI

    Internal medicine (Tokyo, Japan) 2021; (60(19)):3081-3086 doi:10.2169/internalmedicine.6854-20.

    PMID: 34602522
  3. 3

    Azithromycin Clears Bordetella pertussis Infection in Mice but Also Modulates Innate and Adaptive Immune Responses and T Cell Memory.

    Borkner L, Misiak A, Wilk MM, Mills KHG

    Frontiers in immunology 2018; (9()):1764 doi:10.3389/fimmu.2018.01764.

    PMID: 30105030
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    Effect of Early Administration of Clarithromycin or Azithromycin on Symptoms of Pertussis in Infants.

    Tozzi AE, Croci I, Gesualdo F, et al.

    Antibiotics (Basel, Switzerland) 2025; (14(3)) doi:10.3390/antibiotics14030279.

    PMID: 40149090
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    Could this be whooping cough?

    Nee P, Weir E, Vardhan M, Vaidya A

    Emergency medicine journal : EMJ 2018; (35(10)):639-642 doi:10.1136/emermed-2018-207792.

    PMID: 30097456
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    A field study of household attack rates and the effectiveness of macrolide antibiotics in reducing household transmission of pertussis.

    Terry JB, Flatley CJ, van den Berg DJ, et al.

    Communicable diseases intelligence quarterly report 2015; (39(1)):E27-33 doi:10.33321/cdi.2015.39.4.

    PMID: 26063095
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    Pertussis: The Whooping Cough.

    Nguyen VTN, Simon L

    Primary care 2018; (45(3)):423-431 doi:10.1016/j.pop.2018.05.003.

    PMID: 30115332
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    Pertussis: The Identify, Isolate, Inform Tool Applied to a Re-emerging Respiratory Illness.

    Koenig KL, Farah J, McDonald EC, et al.

    The western journal of emergency medicine 2019; (20(2)):191-197 doi:10.5811/westjem.2018.11.40023.

    PMID: 30881535
  9. 9

    Macrolide-resistant Bordetella pertussis strain identified during an ongoing epidemic, Finland, January to October 2024.

    Miettinen M, Barkoff AM, Nyqvist A, et al.

    Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin 2024; (29(49)) doi:10.2807/1560-7917.ES.2024.29.49.2400765.

    PMID: 39639816
  10. 10

    Sharp rise in high-virulence Bordetella pertussis with macrolides resistance in Northern China.

    Hu Y, Zhou L, Du Q, et al.

    Emerging microbes & infections 2025; (14(1)):2475841 doi:10.1080/22221751.2025.2475841.

    PMID: 40042368
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    Pertussis is identified among common respiratory diseases: A case report.

    Chen J, Wu Y, Tang J, et al.

    SAGE open medical case reports 2026; (14()):2050313X251411124 doi:10.1177/2050313X251411124.

    PMID: 41523323
  12. 12

    High Prevalence of Macrolide-Resistant Bordetella pertussis and ptxP1 Genotype, Mainland China, 2014-2016.

    Li L, Deng J, Ma X, et al.

    Emerging infectious diseases 2019; (25(12)):2205-2214 doi:10.3201/eid2512.181836.

    PMID: 31742507
  13. 13

    Working group summary of the 2023 full update of the Finnish national guidelines for paediatric lower respiratory tract infections.

    Backman K, Helminen M, Kekäläinen E, et al.

    Acta paediatrica (Oslo, Norway : 1992) 2025; (114(2)):248-257 doi:10.1111/apa.17481.

    PMID: 39487609
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    Clinical characteristics of pediatric pertussis cases, Quebec 2015-2017.

    Desjardins M, Iachimov D, Mousseau S, et al.

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    PMID: 31015808
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    Underestimated Incidence Rate of Pertussis in the Community: Results from Active Population-Based Surveillance in Yiwu, China.

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    Microorganisms 2024; (12(11)) doi:10.3390/microorganisms12112186.

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    Neonatal pertussis: an emerging issue of concern.

    Dhir SK, Angurana SK, Sundaram V, et al.

    Tropical doctor 2021; (51(1)):99-102 doi:10.1177/0049475520940485.

    PMID: 32811337
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    Neonatal malignant pertussis and exchange transfusion: A case report.

    Lalaoui A, Kassal G, Haidar C, et al.

    Journal of neonatal-perinatal medicine 2025; (18(6)):597-600 doi:10.1177/19345798251330800.

    PMID: 40152897

This page is for informational purposes only and does not replace professional medical advice. Always consult your healthcare provider or pediatrician for whooping cough diagnosis, treatment, and monitoring.

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