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Calan (Verapamil Hydrochloride)

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Calan is in a group of drugs called calcium channel blockers. Calan is used to treat hypertension, angina and certain heart rhythm disorders. It works by relaxing the muscles of your heart and blood vessels.

Other names for this medication:
Bosoptin, Calan, Calaptin, Covera-HS, Isoptin, Isoptin SR, Verelan, Verelan PM, VPL, Zolvera

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Cartia XT, Cardizem, Cardizem LA, Nifedical XL , Propranolol, Procardia, Procardia XL

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Also known as:  Verapamil Hydrochloride.


Calan is in a group of drugs called calcium channel blockers. Calan is used to treat hypertension, angina and certain heart rhythm disorders.

It works by relaxing the muscles of your heart and blood vessels.

Calan is also known as Verapamil, Calaptin, Isoptin, Verelan, Bosoptin, Covera-HS.


Take Calan orally.

Do not take Calan in large amounts.

Do not crush, chew, break, or open a controlled-delivery or extended-release tablet or capsule.

Swallow the whole pill.

It is important to use verapamil regularly to get the most benefit.

If you want to achieve most effective results do not stop taking Calan suddenly.


If you overdose Calan and you don't feel good you should visit your doctor or health care provider immediately. Symptoms of Calan overdosage: slow heartbeat, fainting fit.


Store at room temperature between 15 and 25 degrees C (59 and 77 degrees F) away from moisture, light and heat. Keep container tightly closed. Keep out of the reach of children.

Side effects

The most common side effects associated with Calan are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Do not take Calan if you are allergic to Calan components.

Be careful with Calan if you're pregnant or you plan to have a baby, or you are a nursing mother.

Do not take Calan if you have poor heart condition, low blood pressure, recent heart attack.

Be careful with Calan if you suffer from kidney, liver disease, congestive heart failure, muscular dystrophy.

Be careful with Calan if you take medications such as any other blood pressure medications; buspirone (BuSpar); carbamazepine (Carbatrol, Tegretol); cimetidine (Tagamet, Tagamet HB); cyclosporine (Gengraf, Neoral, Sandimmune); digoxin (digitalis, Lanoxin, Lanoxicaps); lithium (Eskalith, LithoBid); lovastatin (Mevacor); phenobarbital (Solfoton); rifampin (Rifadin, Rimactane, Rifater); theophylline (Elixophyllin, Theo-24, Uniphyl); a sedative such as midazolam (Versed) or triazolam (Halcion); an antibiotic such as clarithromycin (Biaxin), erythromycin (E-Mycin, E.E.S., Ery-Tab, Erythrocin), fluconazole (Diflucan), itraconazole (Sporanox), ketoconazole (Nizoral), telithromycin (Ketek), or voriconazole (Vfend); a beta-blocker such as atenolol (Tenormin), bisoprolol (Zebeta, Ziac), metoprolol (Lopressor, Toprol), propranolol (Inderal, InnoPran), sotalol (Betapace), timolol (Blocadren), and others; a heart rhythm medication such as amiodarone (Cordarone, Pacerone), disopyramide (Norpace), flecainide (Tambocor), or quinidine (Quinaglute, Quinidex, Quin-Release); HIV/AIDS medicine such as amprenavir (Agenerase), atazanavir (Reyataz), delavirdine (Rescriptor), fosamprenavir (Lexiva), indinavir (Crixivan), nelfinavir (Viracept), or ritonavir (Norvir, Kaletra).

Do not use potassium supplements or salt substitutes.

Avoid eating grapefruit or drinking grapefruit juice while taking Calan.

If you want to achieve most effective results without any side effects it is better to avoid alcohol.

Be very careful when you are driving machine.

Do not stop taking Calan suddenly.

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The minor G allele of rs10494366 in the NOS1AP gene is associated with increased all-cause and cardiovascular mortality in Caucasian users of dihydropyridine CCBs. The mechanism underlying the observed association is unknown.

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Recent clinical trial results showed that most patients with atrial fibrillation have similar outcomes with strategies for controlling ventricular rate compared with strategies for restoring sinus rhythm. For efficacy of primary stroke prevention, compared with placebo, evidence was strong for warfarin and suggestive for aspirin. The evidence for an increased risk for major bleeding was suggestive for warfarin and inconclusive for aspirin. For ventricular rate control, verapamil, diltiazem, atenolol, and metoprolol were qualitatively superior to digoxin and placebo, particularly during exercise. For efficacy of acute conversion, compared with placebo, evidence was strong for ibutilide, flecainide, dofetilide, propafenone, amiodarone, and quinidine. For efficacy of maintenance of sinus rhythm after conversion from atrial fibrillation, evidence was strong for amiodarone, propafenone, disopyramide, and sotalol. Echocardiography was found to be useful in estimating risk for thromboembolism and potentially useful in estimating likelihood of successful cardioversion and maintenance.

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Six studies that included 331 patients with keloids and hypertrophic scars were analyzed. Analysis of the total effective rate of skin healing was performed. The total effective rates in the two groups were 54.07% (verapamil) and 53.18% (nonverapamil), respectively. The meta-analysis showed that there was no difference between the two groups. We also compared the adverse reactions between the verapamil treatment group and the steroids treatment group in two studies, and the result indicated that the verapamil group showed less adverse reactions.

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Cluster headache (CH) is a primary headache disorder with relatively effective treatments. Although few sufficiently controlled trials are available, verapamil is recommended as the first-line prophylactic drug for CH by the French Headache Society (with a low level of evidence, level B) and by the EFNS (European Federation of Neurological Societies, level A). Daily doses of more than 480 mg (and up to 1200 mg daily) are frequently used off-label, while 360 mg daily is the only dosage to have demonstrated its effectiveness in a double-blind trial against placebo, and the usual label posology used by cardiologists is 240 mg daily in hypertension. We report the case of a 19-year-old man who was self-reported to our cardiology consultation for dyspnea and asthenia for 18 months. His medical history consisted of CH crisis for 4 years treated by verapamil 720 mg/day for 18 months with relatively good efficiency. His electrocardiogram (ECG) showed a sinus bradycardia at 40 bpm with a first-degree atrio-ventricular block. Evolution was favorable after progressive verapamil discontinuation. Analysis performed on the French Pharmacovigilance Database between July 1, 2000 and December 1, 2014 found four other cases of cardiac adverse events related to high-dose verapamil used in CH prevention (two cases of syncope with complete atrio-ventricular block with verapamil 1200 and 240 mg daily, respectively, one syncope related to sick sinus syndrome with verapamil 360 mg daily, and one case of sinus bradycardia with verapamil 720 mg daily). Although available studies seem to demonstrate an apparent good tolerance, this off-label practice should not be considered as standard of care and requires strict cardiac monitoring, as suggested by the Agence Nationale de Sécurité du Médicament (ANSM) in a recent re-evaluation of the benefit/risk ratio of high-dose verapamil used in CH prevention.

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Using in vitro data, we previously built Catalyst 3-dimensional quantitative structure activity relationship (3D-QSAR) models that qualitatively rank and predict IC(50) values for P-glycoprotein (P-gp) inhibitors. These models were derived and tested with data for inhibition of digoxin transport, calcein accumulation, vinblastine accumulation, and vinblastine binding. In the present study, 16 inhibitors of verapamil binding to P-gp were predicted using these models. These inhibition results were then used to generate a new pharmacophore that consisted of one hydrogen bond acceptor, one ring aromatic feature, and two hydrophobes. This model predicted the rank order of the four data sets described previously and correctly ranked the inhibitory potency of a further four verapamil metabolites identified in the literature. The degree of similarity in rank ordering prediction by these inhibitor pharmacophore models generated to date confirms a likely overlap in the sites to which the three P-gp substrates used in these studies (verapamil, vinblastine, and digoxin) bind. Alignment of the three substrate probes indicated that they are likely to bind the same or overlapping sites within P-gp. Important features on these substrates include multiple hydrophobic and hydrogen bond acceptor features, which are widely dispersed and in agreement among most of the five inhibitor pharmacophores we have described so far. These 3D-QSAR models will be useful for future prediction of likely substrates and inhibitors of P-gp.

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The interactions between nine drugs (baclofen, bupivacaine, chlorpheniramine, ketoconazole, paliperidone, promethazine, propranolol, risperidone and verapamil) and six cyclodextrins (α-CD, β-CD, γ-CD, HP-β-CD, HP-γ-CD and Me-β-CD) or six polymers of cyclodextrins (polyα-CD, polyβ-CD, polyγ-CD, polyHP-β-CD, polyHP-γ-CD and polyMe-β-CD) were studied by affinity capillary electrophoresis and/or (1)H NMR at pH 2.5. An exhaustive qualitative study was performed through the determination of the retardation factor. Then, four compounds and both β-CD and polyβ-CD were selected for the quantitative study of the interactions at pH 2.5 and 7.0. By comparing the results obtained with the β-CD and polyβ-CD, it appears that the apparent binding constants are up to five times higher with the polymer. The 2D-NMR results seem to indicate that the structure of the polymeric network favours the inclusion of the guest in the hydrophobic cavity of the CD units. Moreover, the poly-CDs have shown very high enantioselective abilities at both pH.

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CyA markedly increased the area under the concentration time-curve (AUC) of both IDA [558.26 (197.25) microg x h x l(-1) vs 315.44 (158.28) microg x h x l(-1); P < 0.01] and IDAOL [2896.60 (736.38) microg x h x l(-1) vs 1028.49 (603.95) microg x h x l(-1); P < 0.001] when coadministered as a single modulator, due to a lower total body clearance (CL) [83.51 (52.44) l x h(-1) x m(-2) vs 139.65 (69.45) l x h(-1) x m(-2); NS]. When patients received two MDR modulators simultaneously (D-Ver plus CyA), IDA exposure was essentially the same as in those of the no inhibitor group [331.29 (95.49) microg x h x l(-1) vs 315.44 (158.28) microg x h x l(-1); NS], whereas the IDAOL total body exposure was greater than in the no inhibitor group [2030.32 (401.11) microg x h x l(-1) vs 1028.49 (603.95) microg x h x l(-1); P < 0.01], even if less than in patients receiving CyA as a single MDR modulator (IDA + CyA group) [AUC 2030.32 (401.11) microg x h x l(-1) vs 2896.60 (736.38) microg x h x l(-1); P < 0.05], suggesting an antagonistic effect against those of CyA on IDA and IDAOL elimination and/or an unpredictable redistribution. The main pharmacokinetic parameters of IDA, such as CL and volume of distribution at steady state (Vdss), were remarkably affected by the coadministration of CyA or CyA plus D-Ver, but no statistically significant difference was noted because of IDA pharmacokinetic interpatient variation.

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In these elderly hospitalized Australian patients with AF and CHF, digoxin, β-blockers, and amiodarone were the most commonly used antiarrhythmic drugs. Anticoagulation treatment was prescribed in ~60% of these patients.

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The detection of a range of active pharmaceutical ingredients (APIs) in the soil environment has led to a number of publications demonstrating uptake by crops, however very few studies have explored the potential for impacts on plant development as a result of API uptake. This study investigated the effect of carbamazepine and verapamil (0.005-10 mg/kg) on a range of plant responses in zucchini (Cucurbita pepo). Uptake increased in a dose-dependent manner, with maximum leaf concentrations of 821.9 and 2.2 mg/kg for carbamazepine and verapamil, respectively. Increased carbamazepine uptake by zucchini resulted in a decrease in above (<60%) and below (<30%) ground biomass compared to the controls (p < 0.05). At soil concentrations >4 mg/kg the mature leaves suffered from burnt edges and white spots as well as a reduction in photosynthetic pigments but no such effects were seen for verapamil. For both APIs, further investigations revealed significant differences in the concentrations of selected plant hormones (auxins, cytokinins, abscisic acid and jasmonates), and in the nutrient composition of the leaves in comparison to the controls (p < 0.05). This is some of the first research to demonstrate that the exposure of plants to APIs is likely to cause impacts on plant development with unknown implications.

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Visual loss can be encountered in the immediate, early, or even delayed postoperative period after resection of skull base meningiomas involving the optic apparatus. Various mechanisms for visual loss can include mechanical injury, vascular insult, optic nerve and chiasm edema, and vasospasm of the blood supply to the visual apparatus.

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1. The objective was to investigate the transport of an anticancer agent carboplatin across the blood-brain barrier in combination with hyperbaric oxygenation treatment. An in vitro well-validated model of bovine brain capillary endothelial cells was used. 2. A transendothelial transport of doxorubicin, a known P-glycoprotein substrate, was enhanced 1.5-fold by verapamil for 2-h incubation at 37 degrees C. A transendothelial permeability coefficient of carboplatin (1.29 x 10(-3)cm min-1) was also increased 1.8-fold by verapamil. 3. Under the hyperbaric oxygenation conditions (at 0.2 MPa for the first 10 min), the transendothelial transport for 2 h of doxorubicin and carboplatin were increased 1.3- to 1.8-fold by hyperbaric oxygenation, like the suppressive effects of verapamil on P-gp function, without increase of the transport of lucifer yellow, a non P-glycoprotein substrate. 4. Combination of hyperbaric oxygenation treatment and verapamil could not further increase the permeability coefficients of these drugs that were already enhanced by either treatment, implying the P-glycoprotein-mediated carboplatin efflux transport similarly as doxorubicin. 5. Together with our reported high efficacy of carboplatin combined with hyperbaric oxygenation therapy on brain tumours, the present results suggest that carboplatin could be transported by P-glycoprotein, but that this efflux mechanism would be reduced by the hyperbaric oxygenation with the consequences of clinical efficacy.

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Hyperthermia is used in the treatment of some human malignancies. Thermotolerance may interfere with the efficacy of hyperthermic treatment, and thermotolerant cells may also display an enhanced resistance to some anticancer drugs. We have earlier isolated stable heat-resistant rat hepatoma variants and examined whether heat resistance influenced the drug sensitivity of the cells.

calan eeze review

The study revealed high frequency of overgrowth in renal graft recipients treated with CsA. Overgrowth severity was larger in patients treated simultaneously with nifedipine or amlodipine. CsA dosage, male sex and HLA-DR2 phenotype were risk factors of gingival overgrowth. None of the patients treated with tacrolimus suffered from gingival overgrowth.

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calan tab 2017-09-03

The mixed-mode (C18/strong cation exchange-SCX) solid-phase microextraction (SPME) fiber has recently been shown to have increased sensitivity for ionic compounds compared to more conventional sampler coatings such as polyacrylate and polydimethylsiloxane (PDMS). However, data for structurally diverse compounds to this (prototype) sampler coating are too limited to define its structural limitations. We determined C18/SCX fiber partitioning coefficients of nineteen cationic structures without hydrogen bonding capacity besides the charged group, stretching over a wide hydrophobicity range (including amphetamine, amitriptyline, promazine, chlorpromazine, triflupromazine, difenzoquat), and eight basic pharmaceutical and illicit drugs (pKa>8.86) with additional hydrogen bonding moieties (MDMA, atenolol, alprenolol, metoprolol, morphine, nicotine, tramadol, verapamil). In addition, sorption data for three neutral benzodiazepines (diazepam, temazepam, and oxazepam) and the anionic NSAID diclofenac were collected to determine the efficiency to sample non-basic drugs. All tested compounds showed nonlinear isotherms above 1mmol/L coating, and linear isotherms below 1mmol/L. The affinity for C18/SCX-SPME for tested organic cations without Hbond capacities increased with longer alkyl chains, ranging from logarithmic fiber-water distribution coefficients (log Dfw) of 1.8 (benzylamine) to 5.8 (triflupromazine). Amines smaller than benzylamine may thus have limited detection levels, while cationic surfactants with alkyl chain lengths >12 carbon atoms may sorb too strong to the C18/SCX sampler which hampers calibration of the fiber-water relationship in the linear range. The log Dfw for Duphaston 300 Mg these simple cation structures closely correlates with the octanol-water partition coefficient of the neutral form (Kow,N), and decreases with increased branching and presence of multiple aromatic rings. Oxygen moieties in organic cations decreased the affinity for C18/SCX-SPME. Log Dfw values of neutral benzodiazepines were an order of magnitude higher than their log Kow,N. Results for anionic diclofenac species (logKow,N 4.5, pKa 4.0, log Dfw 2.9) indicate that the C18-SCX fiber might also be useful for sampling of organic anions. This data supports our theory that C18-based coatings are able to sorb ionized compounds through adsorption and demonstrates the applicability of C18-based SPME in the measurement of freely dissolved concentrations of a wide range of ionizable compounds.

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Fostamatinib (R788) is a spleen tyrosine kinase (SYK) inhibitor. The active metabolite of fostamatinib, R406, is Ceftin Online primarily metabolized by CYP3A4.

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The frequency and severity Prandin Drug of postdepressive mood elevation associated with acute or continuation antidepressant therapy may be reduced by mood stabilizers. Such elevations may be more likely in patients with a strong history of mania.

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To investigate in vitro the mechanisms involved in the gastro-intestinal absorption of the HIV protease inhibitor, saquinavir mesylate (Invirase), whose oral bioavailability is low, variable, Mysoline 75 Mg and significantly increased by co-administration with ritonavir, also an HIV protease inhibitor but with higher oral bioavailability.

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Diffuse cerebrovascular dilation has not been addressed but may be associated with RCVS pathophysiology. In addition, physicians should bear Propecia 5mg Dosage in mind that amezinium metilsulfate can potentially induce RCVS.

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The expression of p53, Fas and PCNA molecules is associated with long-term partial ureteral obstruction, whereas verapamil seems Flagyl Recommended Dosage to be a protective agent against apoptotic changes.

calan dosage 2016-11-12

Prevention of calcification in glutaraldehyde (GA) treated porcine aortic valve Cialis Pills Beijing fibroblasts and rat aorta with Ca2+ channel blockers (Ca(2+)-CBs).

calan 80 mg 2015-01-06

The Poincaré-Plot analysis of measurements without pharmacological intervention revealed that three different shapes of scatter plots occurred most frequently. Comparable shapes have been described in clinical studies before. The antiarrhythmic drugs Ivabradine, Verapamil and Sotalol augmented BRV, whereas Flecainide decreased BRV parameters at low concentrations (SDSD 79.0 ± 8.7% of control at 10(-9) M, p < 0.05) and increased Serevent Diskus Dose variability measures at higher concentrations (SDNN 258.8 ± 42.7% of control at 10(-5) M, p < 0.05). Amiodarone and Metoprolol did not alter BRV significantly.

calan drug 2017-06-17

Among the hydantoin derivatives evaluated, BS-1, MN-3 and JH-63 Omnicef And Alcohol were the most effective ABCB1 transporter inhibitors at the concentration of 4 mg/l on the Colo 320/R cells, compared to the positive control, verapamil.

calan sr dosage 2016-06-14

Alkaline phosphatase (ALP) refers to a group of nonspecific phosphomonoesterases located primarily in cell plasma membrane. It has been described in different cell lines that ecto-ALP is directly or indirectly involved in the modulation of organic cation transport. We aimed to investigate, in Caco-2 cells, a putative modulation of 1-methyl-4-phenylpyridinium (MPP(+)) apical uptake by an ecto-ALP activity. Ecto-ALP activity and (3)H-MPP(+) uptake were evaluated in intact Caco-2 cells (human colon adenocarcinoma cell line), in the absence and presence of a series of drugs. The activity of membrane-bound ecto-ALP expressed on the apical surface of Caco-2 cells was studied at physiological pH using p-nitrophenylphosphate as substrate. The results showed that Caco-2 cells express ALP activity, characterized by an ecto-oriented active site functional at physiological pH. Genistein (250 micro M), 3-isobutyl-1-methylxanthine (1 mM), verapamil (100 micro M), and ascorbic acid (1 mM) significantly increased ecto-ALP activity and decreased (3)H-MPP(+) apical transport in this cell line. Orthovanadate (100 micro M) showed no effect on (3)H-MPP(+) transport and on ecto-ALP activity. On the other hand, okadaic acid (310 nM) and all trans-retinoic acid (1 micro M) significantly increased (3)H-MPP(+) uptake and inhibited ecto-ALP activity. There is a negative correlation between the effect of drugs upon ecto-ALP activity and (3)H-MPP(+) apical transport (r = -0.9; P = 0.0014). We suggest that apical uptake of organic cations in Caco-2 cells is affected by phosphorylation/dephosphorylation mechanisms, and that ecto-ALP activity may be involved in this process.