What do you mean by antihistamine?
Antihistamines are medications that help with allergies, and also with stomach problems, cold, anxiety and more. Antihistamines are a class of drugs commonly used to treat symptoms of allergies. These drugs help treat conditions caused by too much histamine, a chemical created by your body’s immune system.
What are antiarrhythmic drugs used for?
What are antiarrhythmics? Antiarrhythmic medications prevent and treat abnormal heartbeats (arrhythmias). Problems with your heart’s rhythm are caused by a disruption in the heart’s electrical system. A drug called atropine may be prescribed if your heart beats too slowly (bradycardia).
What is arrhythmia in pharmacology?
ArrhythmiaAn arrhythmia is a problem with the rate or rhythm of the heartbeat (irregular heartbeat) . During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm.A heartbeat that is too fast is called tachycardia. A heartbeat that is too slow is called bradycardia.
Are antihistamines safe?
Antihistamines are generally safe medicines. But if you take very high doses, you’ll be more likely to get side-effects. If you take too much of a sedating antihistamine, such as chlorphenamine, you may feel unusually sleepy or have a very dry mouth. Extremely high doses can cause fits (seizures).
Is cetirizine an antihistamine?
Cetirizine is an antihistamine medicine that helps the symptoms of allergies. It’s used to treat: hay fever.
Is amlodipine an antiarrhythmic?
Dihydropyridines, like amlodipine, nicardipine, and nifedipine, are highly selective for calcium channels on the vascular smooth muscle tissue; so they’re primarily used to treat hypertension. On the other hand, non-dihydropyridines are the class IV antiarrhythmics and they include verapamil and diltiazem.
Which is antiarrhythmic drug?
Antiarrhythmic agents, also known as cardiac dysrhythmia medications, are a group of pharmaceuticals that are used to suppress abnormal rhythms of the heart (cardiac arrhythmias), such as atrial fibrillation, atrial flutter, ventricular tachycardia, and ventricular fibrillation.
Is turmeric an antihistamine?
“The active component of turmeric is curcumin, which has anti-inflammatory properties, and its anti-allergic properties are due to inhibition of histamine release from mast cells,” Dr. Galowitz says.
Can I take antihistamine everyday?
Experts say, it’s usually okay. “Taken in the recommended doses, antihistamines can be taken daily, but patients should make sure they do not interact with their other medications,” says Sandra Lin, MD, professor and vice director of Otolaryngology-Head & Neck Surgery at John Hopkins School of Medicine.
What does proarhythmia mean?
/pro·ar·rhyth·mia/ (pro″ah-rith´me-ah) cardiac arrhythmia that is either drug-induced or drug-aggravated.proarryth´mic.
Can antiarrhythmias cause proarrhythmia?
PROARRHYTHMIC EFFECTS OF ANTIARRHYTHMIA DRUGS The administration of antiarrhythmia agents may, paradoxically, aggravate the arrhythmias that are being treated or cause new rhythm disorders. Such effect, which is often called proarrhythmia, usually occurs when the dosage of the drugs does not exceed the therapeutic range.
How do you measure proarrhythmic effect?
Surface mapping of the heart has been used to quantify proarrhythmic effect. The scale of potency of proarrhythmia has been found to be: flecainide > propafenone > quinidine > disopyramide > procainamide > mexiletine > lidocaine > sotalol.
What is the mechanism of drug proarrhythmia?
The mechanism of drug proarrhythmia is probably via both slowing of conduction and abnormal automaticity. Paradoxically slowing conduction, which may block a re-entry circuit, may also create the very substrate needed for re-entry, unidirectional block and an excitable gap.