Caffeine Theophylline

Theophylline caffeine Increased serum concentrations of theophylline or caffeine symptoms of theophylline or caffeine toxicity... 

Drugs that may interact with nalidixic acid include theophylline, caffeine, oral anticoagulants, bacteriostatic agents, probenecid, antacids (containing magnesium, aluminum, and calcium), sucralfate, iron salts, multivitamins containing zinc, didanosine, antiarrhythmic agents, and melphalan. 

Ilex cassine Ilex vormitoria Caffeine Theobromine Theophylline Caffeine Theobromine Theophylline... 

Ciprofloxacin (Cipro, Cipro XR, Proquin XR) [Antibiotic/ Fluoroquinolone] Uses Rx lower resp tract, sinuses, skin skin structure, bone/joints, urinary tract Infxns including prostatitis Action Quinolone antibiotic DNA gyrase Dose Adults. 250-750 mg PO ql2h XR 500-1000 mg PO q24h or 200-400 mg IV ql2h in renal impair Caution [C, /-] Children <18 y Contra Component sensitivity Disp Tabs, susp, inj SE Restlessness, N/V/D, rash, ruptured tendons, T LFTs Interactions T Effects Wf probenecid T effects OF diazepam, theophylline, caffeine, metoprolol, propranolol, phenytoin, warfarin effects W/ antacids, didanosine, Fe salts. Mg, sucralfate, Na bicarbonate,... 

Levodopa or dopamine agonists produce diverse dyskinesias as a dose-related phenomenon in patients with Parkinson s disease dose reduction reverses them. Chorea may also develop in patients receiving phenytoin, carbamazepine, amphetamines, lithium, and oral contraceptives, and it resolves with discontinuance of the offending medication. Dystonia has resulted from administration of dopaminergic agents, lithium, serotonin reuptake inhibitors, carbamazepine, and metoclopramide and postural tremor from theophylline, caffeine, lithium, valproic acid, thyroid hormone, tricyclic antidepressants, and isoproterenol. 

Esmolol Theophylline, caffeine, metaproterenol Short-acting 13 blocker. Infuse 25-50 mcg/kg/min IV. 

These two compounds were solved together, using an isomorphous replacement method [6]. Fig. 6 shows the c-axis projection of theophylline. Caffeine has the hydrogen in the intermolecular hydrogen... 

Separation of theophylline and caffeine by column containing polymer imprinted with theophylline. Caffeine washed right through with CHCI3 solvent. Addition of 20 id. of CH3OH to the solvent breaks hydrogen bonds between theophylline and the polymer and elutes theophylline in a volume of t mL [From W. M. Mulleti and P C. Lai. Anal. Chem. 1998, 70.3636.]... 

Savolainen et al. investigated the role of Raman spectroscopy for monitoring amorphous content and compared the performance with that of NIR spectroscopy [41], Partial least squares (PLS) models in combination with several data pre-processing methods were employed. The prediction error for an independent test set was in the range of 2-3% for both NIR and Raman spectroscopy for amorphous and crystalline a-lactose monohydrate. The authors concluded that both techniques are useful for quantifying amorphous content however, the performance depends on process unit operation. Rantanen et al. performed a similar study of anhydrate/hydrate powder mixtures of nitrofurantoin, theophyllin, caffeine and carbamazepine [42], They found that both NIR and Raman performed well and that multivariate evaluation not always improves the evaluation in the case of Raman data. Santesson et al. demonstrated in situ Raman monitoring of crystallisation in acoustically levitated nanolitre drops [43]. Indomethazine and benzamide were used as model... 

Xanthine derivatives are a group of chemically similar compounds that exert a variety of pharmacologic effects. Common xanthine derivatives include theophylline, caffeine, and theobromine (Fig. 26-2) these compounds are frequently found in various foods and beverages (tea, coffee, soft drinks). Theophylline and several theophylline derivatives are also administered therapeutically to produce bronchodilation in asthma and other forms of reversible airway obstruction (bronchitis, emphysema).65,79 Theophylline and caffeine are also potent CNS stimulants, and some of the more common side effects of these drugs are related to this CNS excitation (see Adverse Side Effects, later in this chapter). 

LAI E P C, FARFARA A, VANDERNOOT V A, KONO M and POLSKY B (1998), Surface plasmon resonance sensors using molecularly imprinted polymers for sorbent assay theophylline, caffeine and xanthan , Can J Chem, 76, 265. 

Column (Manufacturer) Theophylline-Caffeine Caffeine-Internal Standard... 

Thalidomide and metabolites Methylamphetamine and impurities Related opiate compounds (morphine, hydromorphone, nalorphine, codeine, oxycodone, diacetylmorphine) Theophylline, caffeine, sulfanilamide... 

Theophylline, caffeine, aminophylline, theobromine, p-hydrocyethyltheophylline, phenylbutazone, hydro-chloro-thiazide, acetominophen Fluvoxamine and possible isomers Hydroquinone and ethers Serotonin and metabolites... 

The direct introduction of chlorine into the 8-position of purine nucleosides is more difficult than bromination. The course of chlorination is considerably affected by the nature of the solvent used. Thus, theobromine is converted to 8-chlorothcobromine by action of chlorine in chloroform. Theophylline, caffeine and sulfanyl analogs of these purines are chlorinated in a similar manner. ... 

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