What is Ephedrine Hydrochloride used for?

It is used for the temporary relief of mild asthma symptoms like wheezing, chest tightness, and shortness of breath.

How many Ephedrine Hydrochloride tablets can I take in a day?

Adults and children 12 and older should not take more than 12 tablets in a 24-hour period.

When should I stop taking Ephedrine Hydrochloride and call a doctor?

Stop use if you experience difficulty sleeping, a rapid heartbeat, tremors, nervousness, or seizures.

Can I take Ephedrine Hydrochloride if I am taking medicine for depression?

No, do not use this if you are taking a prescription monoamine oxidase inhibitor (MAOI) or if you have stopped taking one within the last 2 weeks.

Is Ephedrine Hydrochloride as fast as an inhaler?

No, this product will not provide asthma relief as quickly as an inhaled bronchodilator.

What are the asthma warning signs for Ephedrine Hydrochloride?

Seek medical help if you aren't better in 60 minutes, your symptoms get worse, or you need more than 12 tablets in a day.

Who should talk to a doctor before using Ephedrine Hydrochloride?

Talk to a doctor if you have heart disease, high blood pressure, diabetes, thyroid disease, seizures, or glaucoma.

What should I do if I take too much Ephedrine Hydrochloride?

Get medical help or contact a Poison Control Center right away.

Ephedrine Hydrochloride | CAS 50-98-6 | BALXUFOVQVENIU

Loading compound...

Bronchodilator

How it worksEphedrine Hydrochloride works by stimulating adrenergic receptors to help open up airways.

Brand names:REZIPRES

Used for

Temporary relief of mild asthma symptomsWheezingChest tightnessShortness of breath

Conditions

intermittent asthma

Class

BronchodilatorAdrenergic receptor agonistRespiratoryCardiovascular

How to take

FormsTablets, Intravenous solution

RoutesOral, Intravenous

Adults and children 12 years and older may take 1-2 tablets every 4 hours as needed, but should not exceed 12 tablets in a 24-hour period.

Do not take more than directed. Children under 12 should consult a doctor.

Key warnings

·Asthma may be life-threatening; see a doctor if symptoms do not improve within 60 minutes or if they get worse.
·This product does not work as fast as inhaled rescue inhalers.
·Do not use unless a doctor has confirmed you have asthma.
·Do not use if you are taking an MAOI or have taken one in the last 2 weeks.

Do not use if

·Do not use if you are currently taking a prescription MAOI (used for depression, Parkinson's, or emotional conditions).
·Do not use if you have had an allergic reaction to this product or its ingredients.

Side effects

Common

Difficulty sleepingRapid heartbeatTremorsNervousnessSeizures

Serious

·Fetal bradycardia (slow heart rate in a fetus)
·Angle-closure glaucoma
·Liver tumors
·Abdominal bleeding

Seek help if

·Asthma worsening
·Difficulty sleeping
·Rapid heart beat
·Tremors
·Nervousness
·Seizures

Interactions

·Labetalol hydrochloride
·Norepinephrine bitartrate in 5% dextrose
·Wyamine sulfate
·Propine
·Paredrine
·Akoavaz
·Northera

Special populations

PediatricChildren under 12 years of age should consult a doctor before use.

Talk to your doctor

Monitor

·Asthma symptom severity
·Heart rate
·Sleep patterns
·Tremors or nervousness

Questions to ask

·Have I ever been hospitalized for asthma?
·Do I have heart disease or high blood pressure?
·Do I have diabetes or thyroid disease?
·Do I have narrow angle glaucoma?
·Am I taking any psychiatric medications?

Practical

OverdoseIf an overdose occurs, seek medical help or contact a Poison Control Center immediately.

Ingredients

Allergens

FD&C colors

Inactive

crospovidoneD&C yellow #10 lakemagnesium stearatemicrocrystalline cellulosesilicon dioxidestearic acidaluminum lake

Educational summary derived from FDA labeling, AI-assisted. Not medical advice — consult a healthcare professional. Updated 2026-04-25.