Search results
Results from the WOW.Com Content Network
Some drugs can increase the clearance of lithium from the body, which can result in decreased lithium levels in the blood. These drugs include theophylline , caffeine , and acetazolamide . Additionally, increasing dietary sodium intake may also reduce lithium levels by prompting the kidneys to excrete more lithium.
Theophylline is excreted unchanged in the urine (up to 10%). Clearance of the drug is increased in children (age 1 to 12), teenagers (12 to 16), adult smokers, elderly smokers, as well as in cystic fibrosis, and hyperthyroidism. Clearance of the drug is decreased in these conditions: elderly, acute congestive heart failure, cirrhosis ...
It is a combination drug containing three active ingredients - theophylline, ephedrine, phenobarbital. [2] This medication relaxes the smooth muscle of the airways, making breathing easier. [ 3 ] The common side effects of Tedral include gastrointestinal disturbances , dizziness , headache and lightheadedness .
Isoniazid may increase the amount of phenytoin in the body. The doses of phenytoin may need to be adjusted when given with isoniazid. [50] [51] Isoniazid may increase the plasma levels of theophylline. There are some cases of theophylline slowing down isoniazid elimination. Both theophylline and isoniazid levels should be monitored. [52]
Susceptible groups of patients, such as children and the elderly, are at greater risk of adverse reactions during therapeutic use. [13] [38] [39] Ofloxacin, like some other fluoroquinolones, may inhibit drug-metabolizing enzymes, and thereby increase blood levels of other drugs such as cyclosporine, theophylline, and warfarin, among others.
Even less safe are drugs such as digoxin, a cardiac glycoside; its therapeutic index is approximately 2:1. [12] Other examples of drugs with a narrow therapeutic range, which may require drug monitoring both to achieve therapeutic levels and to minimize toxicity, include dimercaprol, theophylline, warfarin and lithium carbonate.
Diphenhydramine is the primary constituent of dimenhydrinate and dictates the primary effect. The main differences relative to pure diphenhydramine are a lower potency due to being combined with 8-chlorotheophylline (by weight, dimenhydrinate is between 53% and 55.5% diphenhydramine) [10] and the fact that the stimulant properties of 8-chlorotheophylline help reduce the side ...
The effects of theophylline/ephedrine as a performance-enhancing drug in exercise and sports have been studied. [ 20 ] [ 21 ] Use of theophylline/ephedrine combinations has led to disqualification of elite athletes due to ephedrine being banned in competitive sports.