Side effects reactions Interactions, drug

There are two main sensitization reactions-immedi-ate and delayed hypersensitivity. Immediate type hypersensitivity is the result of antibody-allergen interaction occurring in the skin the reaction that develops is known as allergic contact urticaria. Delayed type hypersensitivity is the result of cell-mediated immunity and is the most frequently reported side effect of topical drugs. Both epidermal and dermal cells play pivotal roles in irritation and sensitization. Keratinocytes... 

Tacrine is particularly damaging to the liver and can result in hepatotoxicity. Because tacrine is more likely to cause adverse reactions and drug interactions, it must be administered more frequently (4 times a day) and is rarely used in current therapy. Donepezil has fewer and milder side effects than tacrine It is considered the agent of first choice However, some patients may achieve a better response with one drug than another. Additional adverse reactions are listed in the Summary Drug Table Cholinesterase Inhibitors. 

However, pervasive computing will ultimately do much more it will change the very way in which new drugs are tested. At present, all drugs go through three clinical phases, but the process is both very costly and very inefficient. Clinical trials cannot detect rare side effects and drug interactions, or sometimes even fairly common reactions. In fact, one recent study conducted by Harvard Medical School and Public Citizen, the US consumer advocacy... 

The use of duloxetine in stress urinary incontinence is complicated by (1) the potential for multiple clinically relevant drug-drug interactions with cytochrome P-450 2D6 and 1A2 inhibitors, (2) withdrawal reactions if abruptly discontinued, (3) high rates of nausea and other side effects, (4) the hepa-totoxicity that contraindicates its use in patients with any degree of hepatic impairment, and (5) its mild hypertensive effect. 

Refer to Section 2.7 and Fig. 2.5. It should be noted that the signal transduction process is very dynamic and there are many cascading pathways. This explains the need to have drugs with specific interactions to reduce other reactions that can give rise to adverse events (side effects). Section 2.9 shows the effects of drug specificity. 

The most common side effects of clonidine are constipation, dizziness, drowsiness, dryness of mouth, and unusual tiredness or weakness. However, there are more severe side effects that clinicians and patients should be aware of, such as allergic reaction, decreased heart rate, or unusually elevated or decreased blood pressure, as well as contraindications and drug interactions that should be evaluated prior to prescription. 

Milk thistle appears to be remarkably safe, with loose stools due to increased bile solubility and occasional allergic reactions being the common side effects. It has not been evaluated in children or in pregnant women. There are no known serious drug or herb interactions. 

The most common side effects associated with enfuvirtide therapy are local injection site reactions. Hypersensitivity reactions may occur, are of varying severity, and may recur on rechallenge. Eosinophilia has also been noted. No interactions have been identified that would require alteration of other antiretroviral drugs. 

Adverse effects Hi receptor blockers have a low specificity, that is, they interact not only with histamine receptors but also with muscarinic cholinergic receptors, a-adrenergic receptors, and serotonin receptors (see Figure 40.6). The extent of interaction with these receptors and, as a result, the nature of the side effects, vary with the structure of the drug. Some side effects may be undesirable, and others may have therapeutic value. Furthermore, the incidence and severity of adverse reactions varies between individual subjects. 

Ellinwood, E., Tong, H. (1996). Central nervous system stimulants and anorectic agents. In M. N. G. Dukes (Ed.), Meyler s side effects of drugs An encyclopedia of adverse reactions and interactions (13th ed., pp. 1-30). New York Elsevier. 

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