Ephedrine sulfate is the sulfate salt of the alkaloid ephedrine. It is commonly sold in tablets, capsules, or as an injectable preparation, and is used primarily as a bronchodilator and decongestant.
| Aspect | Details |
|--------|---------|
| Chemical identity | Ephedrine sulfate (C₉H₁₃NO · H₂SO₄). The base ephedrine is a phenethylamine with a secondary amine and a β‑hydroxy group; the sulfate counter‑ion makes the compound more water‑soluble. |
| Mechanism of action | Acts as a sympathomimetic. It stimulates α‑ and β‑adrenergic receptors, causing bronchodilation, vasoconstriction, increased heart rate, and elevated blood pressure. |
| Common therapeutic uses | 1. Bronchospasm relief (as in asthma or chronic obstructive pulmonary disease).
2. Decongestion (nasal and sinus).
3. Adjunct in treating low blood pressure (hypotension). |
| Typical dosage | • Oral: 5–10 mg every 4–6 hours (not usually exceeding 40 mg/day).
• IV: 1–5 mg every 10–20 minutes as needed (total daily dose usually < 40 mg). Dosing must be individualized and is often guided by a healthcare professional. |
| Side‑effects | • Cardiovascular: tachycardia, palpitations, hypertension.
• CNS: jitteriness, headache, insomnia.
• Gastrointestinal: nausea, constipation.
• Rarely: anxiety, arrhythmias, angina. |
| Contraindications | • Uncontrolled hypertension, tachyarrhythmias, severe cardiac disease.
• Severe anxiety or panic disorders.
• Pregnancy (category D – risk to fetus).
• Certain medications (MAO inhibitors, sympathomimetics, SSRIs). |
| Drug interactions | • Monoamine oxidase inhibitors (MAO‑I) – risk of hypertensive crisis.
• Other sympathomimetics (e.g., pseudoephedrine, phenylephrine).
• Antidepressants (especially SSRIs, SNRIs).
• Antihypertensives (may reduce their efficacy). |
| Legal status | In the United States, ephedrine sulfate is a Schedule V or Schedule IV controlled substance, depending on the specific formulation and concentration. It may be available only by prescription or, for lower‑dose decongestants, in over‑the‑counter (OTC) products containing smaller amounts of ephedrine (often as part of a combination product). Many countries restrict ephedrine because of abuse potential. |
| Safety notes | • Use only under medical supervision if you have heart disease or high blood pressure.
• Avoid mixing with alcohol or other stimulants.
• Watch for signs of excessive stimulation (rapid heartbeat, severe headache, chest pain).
• Store out of reach of children; accidental ingestion can be dangerous. |
| Alternatives | • Non‑sympathomimetic bronchodilators (e.g., albuterol, ipratropium).
• Non‑steroidal decongestants (e.g., phenylephrine) – note similar cardiovascular risks.
• Inhaled corticosteroids for chronic asthma control. |
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Key Takeaway
Ephedrine sulfate is a sympathomimetic drug used mainly for bronchial and nasal decongestion. Because it elevates blood pressure and heart rate, it should be used cautiously, especially in people with cardiovascular conditions, and is often regulated or prescription‑only in many jurisdictions. If you’re considering it for yourself, talk to a healthcare provider to ensure it’s safe and appropriate for your situation.