Pharmacology:
- Mechanism of action: Ephedrine's therapeutic effects result from its ability to stimulate both α- and β-adrenoceptors. At lower therapeutic dosages, β2-adrenoceptor stimulation prevails. At higher doses, cardiac contractility and vasopressor effects will be increasingly noticeable, due to direct and indirect mechanisms.
- Pharmacokinetics: Peak plasma concentrations following oral intake are reached within 1-2 h and are reduced slightly by co-administration of food. The elimination half-life is about 2-4 h. Up to 95% of an oral dose are eliminated via urinary excretion, mostly unchanged, with an acidic urinary pH increasing elimination.
Common uses:
- In medicine, ephedrine is often used in combination with other medications, such as antihistamines, to treat allergies and nasal congestion.
- It is also sometimes used as a bronchodilator to open up the airways and help with breathing.
Side effects:
- The most common side effects of ephedrine include anxiety, jitteriness, headaches, and nausea.
- In rare cases, more serious side effects can occur, such as seizures, heart attacks, and strokes.
Drug interactions:
- Ephedrine can interact with a number of other medications, including MAOIs, SSRIs, and antipsychotics.
- It is important to talk to your doctor about any medications you are taking before using ephedrine.
Contraindications:
- Ephedrine is not recommended for people with certain medical conditions, such as heart disease, high blood pressure, or diabetes.
- It should also not be used by pregnant women or nursing mothers.
Precautions:
- Ephedrine should be taken as directed by your doctor.
- Do not take more ephedrine than prescribed, as this can increase the risk of side effects.
- If you experience any serious side effects, stop taking ephedrine and talk to your doctor immediately.
