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The beta-blocking effects of atenolol, as measured by reduction of exercise-related tachycardia, are apparent within 1 hour and are maximal within 2 to 4 hours following a single oral dose. [4] The general effects of atenolol, including beta-blocking and antihypertensive effects, last for at least 24 hours following oral doses of 50 or 100 mg ...
Atenolol/chlorthalidone, also known as co-tenidone, is a combination medication used to treat high blood pressure. [2] [3] It is made up of atenolol, a beta-blocker and chlortalidone, a diuretic. [4] It is not recommended as an initial treatment but may be used in those who are taking atenolol and chlortalidone individually. [5] It is taken by ...
Alpha2 blocker reduces the transmission of neurotransmitters circulating around the body, which contributes to contraction of smooth muscle. [4] Instead of treating diseases, they are used as antidotes for reversing overdose of alpha-2 agonist, reducing the toxic effect of the agonist. [4] Only limited indications are present for this drug.
The first-dose reaction can also result in tachycardia and orthostatic hypotension, which is characterised by a feeling of extreme dizziness that gets worse with an upright posture. [1] Intravascular volume reduction , or concomitant use of other antihypertensive drugs can also lead to reflex tachycardia and orthostatic hypotension .
The initial classification system had 4 classes, although their definitions different from the modern classification. Those proposed in 1970 were: [2] Drugs with a direct membrane action: the prototype was quinidine, and lignocaine was a key example. Differing from other authors, Vaughan-Williams describe the main action as a slowing of the ...
An equianalgesic chart is a conversion chart that lists equivalent doses of analgesics (drugs used to relieve pain). Equianalgesic charts are used for calculation of an equivalent dose (a dose which would offer an equal amount of analgesia) between different analgesics. [1]
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This class of drugs is usually well tolerated. Common adverse drug reactions (ADRs) include: dizziness, headache, and/or hyperkalemia.Infrequent ADRs associated with therapy include: first dose orthostatic hypotension, rash, diarrhea, dyspepsia, abnormal liver function, muscle cramp, myalgia, back pain, insomnia, decreased hemoglobin levels, renal impairment, pharyngitis, and/or nasal ...