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Peds Calc

Dexamethasone Pediatric Dosing Calculator

Calculate pediatric dosages for Dexamethasone in seconds with our Dexamethasone pediatric dosing calculator. Input the details, press Calculate Dosage, and get precise Dexamethasone prescriptions for every child!

Enter the weight of the baby in lbs

Select the weight unit that you are meeasuring in.

Select a medication from the list.

Select the strength of Dexamethasone

Adjust the slider to set the frequency (times per day).

Select the desired frequency (times per day).

Select the desired to set the dosage amount.

By using the "Calculate Dose" button on pedscalc.com, you acknowledge and agree that while our calculations aim for accuracy, final prescription responsibility lies solely with you, the healthcare provider. pedscalc.com and its operators are not liable for any errors or omissions, or for the results obtained from the use of this information. Always verify calculations and exercise professional judgment.

About Dexamethasone

Dexamethasone is a potent corticosteroid used as a single oral dose for pediatric croup to reduce airway swelling and improve breathing. A widely used regimen is 0.6 mg/kg (max 10 mg); some protocols use lower doses (0.15–0.6 mg/kg) in mild/moderate cases per clinician judgment.

Dexamethasone in Pediatrics

Typical croup regimen: single dose ~0.6 mg/kg (max 10–12 mg)

Onset within hours; effect often lasts 24–48 hours

Liquid (e.g., 1 mg/mL) and tablets (e.g., 2–4 mg) are commonly used; injectable solution can be given orally if directed

Single dose rarely needs taper; monitor for behavior/sleep changes

Seek care for increasing breathing difficulty or stridor at rest

Dexamethasone Indications & Uses in Pediatrics

ConditionAge RangeFirst Line?Notes
Croup (laryngotracheobronchitis)Infants and childrenYesSingle oral dose commonly used to reduce airway swelling and improve stridor and cough.
Adjunct for other inflammatory airway conditions (per clinician guidance)Children and adolescentsNoUse case‑by‑case under clinician direction

Common Pediatric Side Effects from Dexamethasone

Single doses of dexamethasone for croup are usually well tolerated. Mild stomach upset, temporary changes in mood or sleep, or a flushed face can occur and are typically short‑lived.

Focus on breathing comfort and reassurance; serious effects are rare with a single dose.

Stomach upset—give with food if needed...

Stomach upset—give with food if needed

Mood/behavior—brief irritability or restlessness c...

Mood/behavior—brief irritability or restlessness can occur

Sleep—some children have difficulty falling asleep...

Sleep—some children have difficulty falling asleep the first night

Infection masking—seek care if fever worsens or br...

Infection masking—seek care if fever worsens or breathing becomes more difficult

Key Safety Information

Most Common Side Effects:
  • Mild stomach upset
  • Temporary drowsiness
  • Minor skin reactions
When to Call Your Doctor:
  • Severe allergic reaction
  • Persistent symptoms
  • Unusual bleeding

Dexamethasone Pediatric Administration & Instructions

Hearing your child’s barky cough can be scary—dexamethasone is commonly used for croup and a single dose often brings noticeable relief. Using your child’s weight to guide dosing and giving it at a calm moment can make the experience smoother for everyone.

If using the liquid, shake well and measure the dose with the oral syringe that comes with the medication—this helps you feel confident about the dose. Give slowly into the cheek; offering a small sip afterwards is okay. If your clinician provided a tablet, it can be crushed and mixed in a small amount of soft food, then given right away. If your child vomits right after the dose, call your clinician for advice before repeating—often waiting and trying again later is preferred.

Gentle reminders: a single dose is usually enough for croup. Improvement often starts within a few hours and continues overnight. Keep a simple log if advised to check in with your clinician, and focus on comfort measures (cool mist, calm environment).

Emergency contact: Seek urgent care if your child has stridor at rest, severe breathing difficulty, drooling, appears very fatigued, or if symptoms worsen despite medication.

You’re doing the right things—most children improve quickly after dexamethasone. If you’re worried at any point, please reach out.

Dexamethasone Contraindications & Warnings in Pediatrics

  • Known hypersensitivity to dexamethasone or formulation components

How Dexamethasone Works - Mechanism of Action

Dexamethasone is a potent glucocorticoid that binds cytosolic glucocorticoid receptors, translocates to the nucleus, and modulates gene transcription to reduce inflammatory mediators. In croup, this decreases airway mucosal edema and helps calm stridor and cough.

Dexamethasone Clinical Pearls & Expert Tips

Essential clinical insights and practical wisdom for safe, effective use in pediatric practice.

  • A single weight‑based dose often provides 24–48 hours of relief—extra doses are rarely needed unless directed.
  • Many parents notice easier breathing and fewer awakenings the night after the dose—this is expected and reassuring.
  • Cool mist, cuddles, and quiet help reduce distress while the steroid reduces swelling.

Parent & Caregiver Resources for Dexamethasone

Resources for Parents & Caregivers

Understanding your child's medication is important. We've created comprehensive guides to help you safely administer Dexamethasone and monitor your child's response to treatment.

Frequently Asked Questions

Many children start improving within a few hours, with benefits often lasting 24–48 hours. Barky cough and stridor typically settle as swelling goes down.

For most children with croup, a single dose is sufficient. Your clinician will advise if additional care is needed based on symptoms.

Yes, dexamethasone can be given with food to reduce stomach upset. Always share your child’s medicines with your clinician—some drugs can interact with steroids.

Short‑term mood or sleep changes can occur but are usually brief. Seek care for worsening breathing, severe agitation, or signs of infection.

If vomiting occurs immediately after the dose, call your clinician for guidance before repeating. If your child keeps the dose down and starts improving, a second dose is usually not needed.

In some cases, clinicians use an intramuscular dose or administer the injectable solution orally. Your care team will choose the best route based on your child’s condition.