Theophylline. Interactions

The toxic effects of theophylline, aminophylline, and other xanthines are additive. Use with other xanthine medications should therefore be avoided if intravenous aminophylline is to be given for acute bronchospasm in patients who have been taking maintenance theophylline therapy, serum-theophylline concentrations should be measured first and the initial dose reduced as appropriate (see Uses and Administration, below).

Constipation Management

Constipation is a common problem experienced by many patients and can be caused by chemotherapy, radiation, surgery, stress, or medications. Please do not be afraid or embarrassed to call your doctor or nurse at any time; if left untreated the constipation may get worse and not improve on its own. Many chemotherapy and anti-nausea medications cause constipation, so when starting chemotherapy take a stool softener like Ducosate every day unless otherwise directed.

Response to Medications and Neurochemistry

Has there been any research done on individual responses to psychotropics as a predictor of their underlying neurochemistry? For example, when an individual is given Prozac and experiences extreme fatigue, can we use this information in a clinically relevant way? I’d appreciate your comments on this issue as well. I am not aware of any published research on this intriguing question, as you have phrased it, but perhaps I can point you in a useful direction.


Specialty care for asthma can be confusing because each type of provider may have a different focus. Pediatric allergists specialize in the reactions of the immune system to common environmental allergens, such as pollens, dust mites, or pet dander, that can play a key role in asthma. Allergists use skin tests to detect allergies and may, in some cases, treat allergies by giving repeated small doses of the allergen.