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Cannabis Dependence
Cannabis Dependence

Parenteral products
Parenteral products

... Immediate & total access of the drug to body Maximum plasma conc. Within minutes Duration of action may be affected by dose distribution, metabolism, excretion of drug, elimination usu. 1st order • i.v. drips → constant blood levels ...
anesthetics
anesthetics

...  Closing of the channel (m gate) is distinct from inactivation and blocks access to drug binding site  Thus, local anesthetics bind preferentially to the ...
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T3 Not 4 Me

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... The aim of this study series was to study the role of placental transporters, apical P-gp and basal MRP1, using saquinavir as a probe drug, and to study transfer of quetiapine and the role of P-gp in its transfer in the dually perfused human placenta/cotyledon. Furthermore, two ABCB1 (encoding P-gp) ...
Homeopathy
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... nonprescription, over-the-counter (OTC) drugs. However, because homeopathic products contain little or no active ingredients, they do not have to undergo the same safety and efficacy testing as prescription and new OTC drugs. The U.S. Food and Drug Administration (FDA) does require that homeopathic ...
SALT SOLID DISPERSIONS
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... accepted approach to improve dissolution rate of poorly water-soluble ionic drugs. Nevertheless, the salt formation process is often empirical and may not always lead to desired end product profile. Alternatively, pH-modifiers have been used as formulation components for such compounds. The purpose ...
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contents - Médecins d`Afrique

... protein and increased plasma volume that occurs with physical conditioning. Changes in hepatic clearance of drugs may explain the differences in systemic clearance seen when comparing physically trained subjects to sedentary ones. Some studies have shown that hepatic enzymes are increased with train ...
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... Parkinson’s disease is a progressive neurodegenerative disorder which affects approximately 1% of individuals over 60 years of age. There has been a growing interest in dopamine agonists as a form of treatment for this disease. The aims of this systematic review and metaanalysis were to establish th ...
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...  Elimination: - Mech.: excreted unchanged in urine by the tubular secretion mechanism for organic acids. - Speed: half-life: 6-9 hrs (due to its high binding to plasma protein and RBC). 5. Unwanted effects: (1) Somnolence, paresthesia (by  CO2 in the brain – see above) (2) Formation of Ca3(PO4)2-c ...
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... Second messenger assays: It monitors signal transduction from activated cell-surface receptors. Second messenger assays typically measure fast, transient fluorescent signals that occur in matter of seconds or milliseconds. Many fluorescent molecules are known to respond to changes in intracellular C ...
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... healthy volunteers evaluated the steady-state pharmacokinetics of HCTZ (25 mg q24h) and topiramate (96 mg q12h) when administered alone and concomitantly. The results of this study indicate that topiramate Cmax increased by 27% and AUC increased by 29% when HCTZ was added to topiramate. The clinical ...
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... combination with other serotonergic and / or neuroleptic/antipsychotic drugs. As these syndromes may result in potentially life-threatening conditions, treatment with LUVOX® should be discontinued if patients develop a combination of symptoms possibly including hyperthermia, rigidity, myoclonus, aut ...
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... Although pharmaceutical industries have produced a number of new antibiotics in the last three decades, resistance to these drugs by infectious microorganisms has increased. For a long period of time, plants have been a valuable source of natural products for maintaining human and animal health. The ...
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Author`s personal copy - Texas Christian University

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... Schizophrenia has been initially associated with dysfunction in dopamine neurotransmission. However, the observation that antagonists of the glutamate N-methyl-D-aspartate (NMDA) receptor produce schizophrenic-like symptoms in humans has led to the idea of a dysfunctioning of the glutamatergic syste ...
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Drug interaction



A drug interaction is a situation in which a substance (usually another drug) affects the activity of a drug when both are administered together. This action can be synergistic (when the drug's effect is increased) or antagonistic (when the drug's effect is decreased) or a new effect can be produced that neither produces on its own. Typically, interactions between drugs come to mind (drug-drug interaction). However, interactions may also exist between drugs and foods (drug-food interactions), as well as drugs and medicinal plants or herbs (drug-plant interactions). People taking antidepressant drugs such as monoamine oxidase inhibitors should not take food containing tyramine as hypertensive crisis may occur (an example of a drug-food interaction). These interactions may occur out of accidental misuse or due to lack of knowledge about the active ingredients involved in the relevant substances.It is therefore easy to see the importance of these pharmacological interactions in the practice of medicine. If a patient is taking two drugs and one of them increases the effect of the other it is possible that an overdose may occur. The interaction of the two drugs may also increase the risk that side effects will occur. On the other hand, if the action of a drug is reduced it may cease to have any therapeutic use because of under dosage. Notwithstanding the above, on occasion these interactions may be sought in order to obtain an improved therapeutic effect. Examples of this include the use of codeine with paracetamol to increase its analgesic effect. Or the combination of clavulanic acid with amoxicillin in order to overcome bacterial resistance to the antibiotic. It should also be remembered that there are interactions that, from a theoretical standpoint, may occur but in clinical practice have no important repercussions.The pharmaceutical interactions that are of special interest to the practice of medicine are primarily those that have negative effects for an organism. The risk that a pharmacological interaction will appear increases as a function of the number of drugs administered to a patient at the same time.It is possible that an interaction will occur between a drug and another substance present in the organism (i.e. foods or alcohol). Or in certain specific situations a drug may even react with itself, such as occurs with dehydration. In other situations, the interaction does not involve any effect on the drug. In certain cases, the presence of a drug in an individual's blood may affect certain types of laboratory analysis (analytical interference).It is also possible for interactions to occur outside an organism before administration of the drugs has taken place. This can occur when two drugs are mixed, for example, in a saline solution prior to intravenous injection. Some classic examples of this type of interaction include that Thiopentone and Suxamethonium should not be placed in the same syringe and same is true for Benzylpenicillin and Heparin. These situations will all be discussed under the same heading due to their conceptual similarity.Drug interactions may be the result of various processes. These processes may include alterations in the pharmacokinetics of the drug, such as alterations in the absorption, distribution, metabolism, and excretion (ADME) of a drug. Alternatively, drug interactions may be the result of the pharmacodynamic properties of the drug, e.g. the co-administration of a receptor antagonist and an agonist for the same receptor.
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