Ephedrin Streuli

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Ephedrin Streuli

Treatment option: Asthma, Bronchospasm

Medically reviewed

Marina Burgos

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Ephedrin Streuli

Ephedrin Streuli is a commercial name for pharmaceutical preparations containing the active ingredient Ephedrine, a foundational medication used in general medicine. The drug is best understood by its chemical classification and core physiological actions.

Quick Facts: Ephedrine

Property Description
Active Ingredient Ephedrine (as hydrochloride or sulfate salt)
Common Forms Solution for injection, tablets, capsules
Pharmacological Class Sympathomimetic Agent (Adrenergic Agonist)
Origin Naturally occurring alkaloid (synthetic for medical use)
General Purpose Support circulation and respiratory function

What Type of Medicine is Ephedrin Streuli?

Ephedrin Streuli is a preparation of Ephedrine, which belongs to the class of medications known as sympathomimetic agents. This classification means the medicine is designed to mimic the actions of natural signaling chemicals, such as norepinephrine, by activating the body's sympathetic nervous system. It is classified as a dual boldsymbolalpha- and boldsymbolbeta-adrenergic agonist, giving it broad effects on various bodily systems. Ephedrine is utilized for its established mechanism in elevating blood pressure. This medicine helps stabilize circulation by tightening blood vessels and increasing cardiac output, a vital function in certain acute medical scenarios.


Composition and Pharmaceutical Presentation

The core component is the Ephedrine salt, typically the hydrochloride or sulfate. Although Ephedrine is chemically a phenethylamine alkaloid originally found in the Ephedra plant, the form used in modern pharmaceuticals is manufactured synthetically to ensure consistent purity and dosage precision. This synthetic sourcing is vital for meeting strict pharmacological standards. The medicine is primarily presented in forms suited for different routes of administration: an aqueous solution for injection is used in critical care, while tablets and capsules are available for oral use, confirming its status as a single-ingredient product.


General Purpose and Core Physiological Effect

The general purpose of Ephedrine is rooted in its ability to simultaneously cause vasoconstriction (vessel narrowing) and bronchodilation (airway opening). These effects make it useful for supporting the circulatory system when blood pressure requires elevation, due to its established vasopressor effect, and for easing restricted airflow in respiratory contexts. This combined physiological support defines the drug's foundational role in general medicine.

Regulatory References

  1. Ephedrine Mechanism of Action (NIH)

What side effects are possible with Ephedrin Streuli?

Possible Side Effects and Safety Information

The safety profile of Ephedrin Streuli is based on documented adverse reactions and specific usage restrictions as defined in regulatory documents.

Frequency-Classified Adverse Reactions

Adverse reactions are organized by the body system affected, with the most frequently observed events primarily impacting the cardiovascular and gastrointestinal systems.

Frequency Classification System-Organ Class Involved
Common (1/100 to <1/10) Cardiac disorders (e.g., palpitations, tachycardia, hypertension), Gastrointestinal disorders (e.g., nausea, vomiting), Respiratory disorders (e.g., dyspnoea).
Rare (1/10,000 to <1/1,000) Cardiac disorders (e.g., cardiac arrhythmia), Renal and urinary disorders (e.g., acute urinary retention).
Not Known Cardiac disorders (e.g., cardiac arrest, hypotension, anginal pain), Psychiatric disorders (e.g., psychotic states, fear), Nervous system disorders (e.g., tremor), Vascular disorders (e.g., cerebral haemorrhage), Metabolic disorders (e.g., hypokalaemia, changes in blood glucose levels).

Serious Adverse Reactions and Limitations

Serious postpartum hypertension that has been associated with stroke is documented when this medicine is administered concomitantly with oxytocic drugs (e.g., methylergonovine). Other serious events reported with an unknown frequency include cardiac arrest and cerebral haemorrhage.

Tachyphylaxis and Tolerance: Repeated administration of the medicine may cause a reduced and rapidly diminishing response.

Contraindications for use include: closed-angle glaucoma, pheochromocytoma, asymmetric septal hypertrophy, concomitant or recent (within 14 days) use of Monoamine Oxidase Inhibitors (MAOIs), and general anesthesia with halogenated hydrocarbons.

Population-Specific Considerations: Use during delivery has been associated with an increased risk of mild metabolic acidosis in the newborn. When used to prevent low blood pressure, the medicine is associated with a higher incidence of hypertension compared to when it is used for treatment.

Overdose and Emergency Response

Overdose and When to Seek Help

An overdose of Ephedrine presents with specific clinical and physiological manifestations documented in official regulatory sources. Signs of toxicity can include systemic effects such as fever, nausea, and vomiting, alongside neurological and psychiatric signs like paranoid psychosis.

The most severe documented outcomes are linked to the cardiovascular and central nervous systems. These include potentially life-threatening events such as ventricular and supraventricular arrhythmias, severe hypertension, convulsions, respiratory depression, and coma. The human lethal dose is documented to be approximately 2 grams.


Mandated Emergency Actions

Immediate medical attention must be sought upon the manifestation of any severe or life-threatening symptoms, as the required management is strictly procedural. Regulatory documents emphasize the need for intensive supportive treatment in an appropriate clinical setting. No specific pharmacological antidote is documented in the official prescribing information. Management includes careful monitoring of blood pressure and the administration of parenteral antihypertensive agents if the pressure continues to rise to an unacceptable level.

Therapeutic Uses of Ephedrin Streuli

Ephedrin Streuli is generally used to provide supportive therapeutic benefit in clinical situations marked by symptoms related to systemic imbalance, specifically clinically significant low blood pressure (hypotension). This medication is commonly used in contexts like anesthesia-induced hypotension (e.g., during surgery or following neuraxial blocks), where symptoms may intensify temporarily. The core therapeutic utility is relevant across several key symptomatic domains, including supporting circulation in acute hypotensive episodes, providing temporary relief for restricted breathing in mild asthma, and easing symptoms of nasal congestion.

“The goal of management is to assist the patient during acute symptomatic phases by providing symptomatic relief that helps address the overall burden of physiological distress.”

The medication helps address these groups of symptoms by offering symptomatic relief that manages systemic pressure and supports functional stability during critical episodes. It contributes to easing discomfort during periods of heightened respiratory issues and is often applied during phases when supportive symptom management is appropriate, particularly for obstetric patients undergoing anesthesia.


Quick Fact: Relief for Acute Symptoms
Primary Benefit Helps manage systemic pressure and supports circulatory stability.
Respiratory Use Supports general well-being during symptomatic phases caused by wheezing and shortness of breath.
Clinical Context Applied in clinical settings that involve acute or unstable symptom patterns.

Regulatory References

  1. NIH StatPearls overview

Eligibility and Restrictions for Use

Official Eligibility and Restrictions

Ephedrin Streuli, containing Ephedrine, is officially established for use in adults and is commonly used in obstetric patients for addressing hypotension during anesthesia. Use in adolescents (over 12 years) is permitted for the injectable form in certain regions.


Absolute Contraindications

Regulatory documents state the medicine must not be used in patients with specific severe conditions or concurrent treatments, including:

  • Hypersensitivity to the active ingredient or excipients.
  • Phaeochromocytoma.
  • Use with Monoamine Oxidase Inhibitors (MAOIs) or within 14 days of cessation.
  • Pre-existing conditions like severe hypertension and ischaemic heart disease.

Restricted and Not Recommended Populations

Population Group Regulatory Status
Children under 12 Not recommended; safety and efficacy are not established due to insufficient data.
Pregnancy Use should be avoided or restricted to situations where necessary, as the drug crosses the placenta.
Lactation/Breastfeeding Not recommended; Ephedrine is excreted in breast milk.
Older Adults Use is permitted, but official labels recommend initiating treatment at the low end of the dosing range.
Renal Impairment Requires careful monitoring after the initial dose due to potential for slower elimination.

What should I know about interactions with other medicines?

Ephedrin Streuli (ephedrine) can interact with various medications, leading to potentially serious effects, primarily affecting blood pressure and heart rhythm. It is essential to inform your healthcare provider about all prescription drugs, over-the-counter medicines, and herbal supplements you are currently taking.

Medications with High-Risk Interactions

  • Monoamine Oxidase Inhibitors (MAOIs): Concurrent use with MAOIs (or within 14 days of stopping them) is strongly contraindicated as it can dramatically potentiate the pressor effect of ephedrine, potentially leading to a hypertensive crisis (severely high blood pressure) and stroke.
  • General Anesthetics (e.g., halogenated hydrocarbons like halothane): These drugs can sensitize the heart muscle to ephedrine, significantly increasing the risk of cardiac arrhythmias (irregular heartbeats).

Other Significant Interactions

Ephedrine's sympathomimetic effects mean caution is required when combining it with other substances that affect the cardiovascular system, as the risk of high blood pressure and cardiac irregularities is increased. These include:

Drug Class / Examples Potential Effect of Interaction
Adrenalin-like drugs/Sympathomimetics (e.g., phenylephrine, pseudoephedrine) Increased risk of serious cardiovascular effects, including severe hypertension.
Tricyclic Antidepressants, Oxytocic drugs (e.g., oxytocin, ergot alkaloids) Augmented pressor effect, increasing the risk of severe hypertension.
Cardiac Glycosides (e.g., digoxin) Increased risk of potentially life-threatening cardiac arrhythmias.
Antihypertensive drugs (e.g., beta-blockers, guanethidine) Ephedrine may inhibit the hypotensive effect of these medicines, leading to a loss of blood pressure control.
Theophylline Increased frequency of side effects like nausea, nervousness, and insomnia.

Inform your doctor if you use St John’s wort, as it may also interact with Ephedrin Streuli.

Mechanism of Action

Ephedrin Streuli exerts its pharmacodynamic activity by engaging the adrenergic receptor system, functioning as both a direct and indirect sympathomimetic agent. The direct effect involves binding to and activating alpha (alpha) and beta (beta) adrenergic receptors. The more significant indirect effect involves pathway modulation by increasing the release of the neurotransmitter norepinephrine from sympathetic nerve terminals and inhibiting its reuptake, which prolongs its presence and activity in the synapse. This combined mechanism enhances sympathetic nervous system stimulation. The agonism of beta1 receptors in the myocardium increases cardiac chronotropy and inotropy, while stimulation of alpha1 receptors in the vasculature induces vasoconstriction, leading to an increase in heart rate and systemic blood pressure. In the pulmonary system, stimulation of beta2 adrenergic receptors expressed on bronchial smooth muscles triggers intracellular cascades that result in smooth muscle relaxation and subsequent bronchodilation (widening of the airways).

Dosage and Administration Information

Official Administration Guidelines for Ephedrin Streuli (Ephedrine Sulfate Injection)

Ephedrine sulfate injection is a prescription medication administered by a healthcare professional in a clinical setting. It is delivered as an intravenous (IV) bolus injection.

Dosing and Preparation

The medication is used to treat clinically important hypotension (low blood pressure) that occurs in the setting of anesthesia.

Administration Detail Official Guideline
Route of Administration Intravenous (IV) Bolus
Initial Adult Dose 5 mg to 10 mg
Subsequent Dosing Additional boluses administered as needed (titrated to effect)
Maximum Total Dose Should not exceed 50 mg

For products supplied as a ready-to-use formulation (e.g., 5 mg/mL), the solution is administered undiluted. For more concentrated formulations (e.g., 50 mg/mL), the product must be diluted with an appropriate solution (such as normal saline) to a concentration of 5 mg/mL before IV bolus administration. Before use, the solution must be clear and colorless and visually inspected to ensure no particulate matter is present.

Procedural and Age-Specific Rules

Ephedrine must be administered as a slow intravenous injection. The dosing is adjusted based on the patient's blood pressure response to meet the treatment goal. The product is for single use only, and any unused portion remaining in the vial or syringe must be discarded immediately after the procedure. Dose selection for elderly patients should be cautious, typically starting at the lower end of the dosing range.

Ephedrine injection is not typically applicable for routine or daily frequency patterns; it is used as needed (PRN) in acute care settings.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Ephedrin Streuli

Evidence for Use in Acute Hypotension

Ephedrin Streuli has been most extensively evaluated in research examining episodes of clinically significant low blood pressure (hypotension), particularly those arising during surgical procedures involving anesthesia. Research has explored this use primarily through Randomized Controlled Trials (RCTs) and Systematic Reviews. The research examined short-term, acute circulatory endpoints, monitoring measured changes in Mean Arterial Pressure (MAP) and the time required to restore stable blood pressure levels.

Findings describe patterns observed in studies where blood pressure measurements were tracked in the minutes immediately following the investigational product's entry into the bloodstream in the operating room. There is limited information for long-term outcomes or how Ephedrine’s patterns observed in the acute setting relate to longer-term measured cardiovascular parameters.

Evidence for Use in Restricted Breathing Symptoms

Ephedrine was also evaluated in research contexts involving conditions characterized by fluctuating or episodic manifestations, such as restricted breathing or wheezing. The evidence base for this application consists mainly of older clinical trials and general pharmacological observations. Research explored whether measured changes in airflow metrics were observed, alongside assessing patient-reported outcomes describing perceived discomfort.

Comparative evidence is lacking alongside more recently developed, targeted medications, and the existing data may provide limited insight into current standards of care.

What is Still Uncertain About Ephedrin Streuli Research

A major limitation is the short duration of research, as follow-up durations were limited across most indications. This results in an incomplete picture regarding long-term outcomes. Additionally, comparative evidence is lacking for many contexts, making it difficult to fully contextualize Ephedrine’s patterns alongside other available medications. The findings describe group patterns, not personal outcomes, and research is ongoing in many related areas.

Key Studies & References

  1. Ephedrine Injection (medication for low blood pressure) - MedlinePlus Drug Information
  2. Ephedrine - NIH StatPearls
  3. A Systematic Review and Meta-Analysis of Prophylactic Vasopressors for the Prevention of Peri-Intubation Hypotension

Frequently Asked Questions (FAQ)

Common questions about Ephedrin Streuli (FAQ)


Q: How quickly does Ephedrin Streuli start to work after taking it?

In its primary use as an intravenous (IV) injection to treat low blood pressure during procedures, the effect is described as occurring rapidly. This speed is consistent with the immediate entry into the bloodstream to quickly raise blood pressure.

Q: How long do the effects of Ephedrin Streuli typically last?

The medication is typically described as short-acting in official pharmacological summaries. This characteristic aligns with its use for acute, short-term treatment scenarios in a clinical setting where brief circulatory support is needed.

Q: Does Ephedrin Streuli interact with common over-the-counter pain relievers?

Official drug interaction information generally shows no specific interactions with common pain relievers like ibuprofen or acetaminophen. However, official documents recommend informing your healthcare provider about all medicines you are taking, as the medication affects the cardiovascular system.

Q: Is it normal to feel anxious or shaky after taking Ephedrin Streuli?

Yes, official regulatory documents list symptoms such as nervousness, anxiety, apprehension, and tremor (shaking) as possible effects. These are classified as documented adverse reactions that may occur following administration of the medication.

Q: Does Ephedrin Streuli have any known interactions with herbal supplements?

Regulatory documents describe the importance of disclosing all current herbal supplements to the healthcare provider. Some official sources specifically note a potential interaction with St John’s wort due to the possibility of increasing the risk of cardiovascular effects.

Q: Is Ephedrin Streuli safe to take while driving or operating machinery?

Official product information notes that the ability to drive or operate machinery may be impaired if certain adverse effects are experienced. Side effects such as dizziness, tremor (shaking), or other Central Nervous System disturbances are documented as possible.

Q: Does the form of Ephedrin Streuli (tablet, injection) change how quickly it works?

Yes, the route of administration significantly changes the onset of the effect. The injection is used for acute conditions because it results in a very rapid onset, while oral forms like tablets or capsules have a delayed and more gradual onset.

Q: Are there specific monitoring requirements (like blood tests) when using Ephedrin Streuli long-term?

Because the medicine is primarily used for short-term, acute care in a clinical setting, official documents do not typically outline laboratory monitoring requirements for long-term use. Monitoring of blood pressure and heart rate is a fundamental process during and immediately following administration.

Q: Is it true that Ephedrin Streuli can make existing glaucoma worse?

The medicine is officially contraindicated (should not be used) in patients who have been diagnosed with closed-angle glaucoma. This is due to the drug's potential to increase pressure within the eye, which is a known risk in this specific condition.

Q: What are the historical uses of ephedrine that are no longer common?

Authoritative historical and medical reviews indicate that Ephedrine was historically used for treating conditions characterized by restricted breathing (bronchospasm). This use is generally no longer a part of current standards of care.

Q: Is Ephedrin Streuli known to interact with caffeine?

Official interaction guides classify the combination of ephedrine and caffeine as a moderate interaction. Both substances have the ability to increase blood pressure and heart rate, and combining them may enhance these effects.

Q: Does Ephedrin Streuli come with a Medication Guide or specific patient counseling points?

In some jurisdictions, like the US, a detailed patient counseling section is included as part of the official labeling. This section contains important information and warnings intended for discussion between the patient and the healthcare provider.

Q: Why do official documents sometimes mention Ephedrine for weight loss?

Historical documents note that Ephedrine was widely used in dietary supplements for weight loss and energy until the FDA prohibited its use in these non-prescription products. The prohibition was enacted in 2004 due to serious safety concerns documented with this use.

Q: Can Ephedrin Streuli affect my blood pressure even if I don't have a history of high blood pressure?

Yes, the drug's fundamental mechanism of action is to elevate blood pressure. This effect is powerful enough that hypertension (high blood pressure) is listed as a common adverse reaction that can occur in the general patient population.

Q: Can people with certain heart conditions take Ephedrin Streuli?

Regulatory documents list specific severe conditions that are contraindications for use, such as severe hypertension and ischaemic heart disease. For other forms of heart disease, official documents state that careful consideration of use and potential adjustment of treatment may be necessary.

Q: Do studies suggest a risk of dependence or addiction with Ephedrin Streuli?

Some regulatory documents and authoritative pharmacological reviews note that because of its classification as a sympathomimetic agent, Ephedrine has a potential for abuse. This potential can lead to a state of dependence with chronic use.

Q: What happens if I miss a scheduled time to take Ephedrin Streuli?

The primary form of the medicine is used as needed in acute care, making missed doses not applicable. For non-acute forms, standard patient information indicates that a double or extra dose should not be used to compensate for a previously missed amount.

Q: Why are people with prostate problems sometimes cautioned about using Ephedrin Streuli?

Regulatory documents list acute urinary retention as a possible adverse reaction. This is a particular concern for patients with pre-existing conditions that affect urination, such as an enlarged prostate gland. This requires clinical assessment.

Q: What are the signs of taking too much Ephedrin Streuli?

In the event of overdosage, symptoms may include severe, dangerous increases in blood pressure (severe hypertension), seizures, and life-threatening heart rhythm issues (cardiac arrhythmias). The official summaries cite an estimated lethal dose in humans.

Q: Why is this drug sometimes associated with athletic performance enhancement discussions?

Official warnings and precautions note that this preparation contains an active substance that might give a positive reaction in anti-doping tests. This regulatory statement directly acknowledges the drug's relevance within the context of competitive sports.

Q: Can taking Ephedrin Streuli lead to tolerance over time?

Yes, official labeling specifically mentions that repeated administration can result in tachyphylaxis and tolerance. Tachyphylaxis is described as a rapid decrease in the patient's response to the drug.

Q: Does Ephedrin Streuli have a 'black box warning' in the US?

A review of the FDA-approved Ephedrine Sulfate Injection label shows it does not contain an official Black Box Warning (also called a Boxed Warning) in the United States.

Q: What kind of specialist typically prescribes Ephedrin Streuli?

Based on its primary official indication for treating low blood pressure in the setting of anesthesia, the medication is most typically administered by specialists such as anesthesiologists or critical care providers in a hospital environment.

How should Ephedrin Streuli be stored and disposed of?

How to Store and Dispose of Ephedrin Streuli

Storing Ephedrin Streuli correctly ensures its stability and safety. Unopened ampoules must be stored at a temperature not exceeding 25 C and should remain in the outer carton to protect the medication from light. The unopened product has a shelf life of three years.

Once the solution is diluted or opened, it is intended for single use only. While the diluted solution remains chemically stable for up to 72 hours at 25 C, official guidelines strongly recommend that it be used immediately from a microbiological standpoint. If immediate use is not possible, the maximum recommended in-use storage is 24 hours at 2 C to 8 C (refrigerated), provided dilution occurred under controlled, aseptic conditions. Any unused medicinal product or waste material must be disposed of strictly in accordance with local regulatory requirements.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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