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Veclam (Biaxin)

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Veclam belongs to the class of medicines known as macrolide antibiotics. It works by killing bacteria or preventing their growth. However, this medicine will not work for colds, flu, or other virus infections.

Other names for this medication:
Abbotic, Aeroxina, Biaxin, Biclar, Clacee, Clarimax, Claripen, Clariwin, Clarix, Clonocid, Fromilid, Kalixocin, Karin, Klabax, Klabion, Klarithran, Klerimed, Kofron, Krobicin, Lekoklar, Macladin, Macrobid, Macrol, Moxifloxacin, Preclar, Synclar, Zeclar

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Cipro, Zitromax, Erythromycin, Azithromycin, Roxithromycin, Erythrocin, Zmax, Zithromax, Ery-Tab, Dificid, Erythrocin Stearate Filmtab, Eryc, EryPed, Erythrocin Lactobionate, Ilosone, PCE Dispertab


Also known as:  Biaxin.


Veclam (generic name: clarithromycin; brand names include: Maclar / Klaricid / Klacid / Clarimac / Claribid) is used to treat many different types of bacterial infections affecting the skin and respiratory system, including: Strep throat, Pneumonia, Sinusitis (inflamed sinuses), Tonsillitis (inflamed tonsils), Acute middle ear infections, Acute flare-ups of chronic bronchitis.

It also is used to treat and prevent disseminated Mycobacterium avium complex (MAC) infection [a type of lung infection that often affects people with human immunodeficiency virus (HIV)]. It is used in combination with other medications to eliminate H. pylori, a bacteria that causes ulcers.

It also is used sometimes to treat other types of infections including Lyme disease (an infection that may develop after a person is bitten by a tick), crypotosporidiosis (an infection that causes diarrhea), cat scratch disease (an infection that may develop after a person is bitten or scratched by a cat), Legionnaires' disease (a type of lung infection), and pertussis (whooping cough; a serious infection that can cause severe coughing). It is also sometimes used to prevent heart infection in patients having dental or other procedures.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

Veclam works by stopping the growth of or killing sensitive bacteria by interfering with their protein synthesis.


The recommended daily dosage is 15 mg/kg/day divided every 12 hours for 10 days (up to the adult dose). Refer to dosage regimens for mycobacterial infections in pediatric patients for additional dosage information.

For the treatment of disseminated infection due to Mycobacterium avium complex (MAC), Veclam Filmtab and Veclam Granules are recommended as the primary agents. Veclam Filmtab and Veclam Granules should be used in combination with other antimycobacterial drugs (e.g. ethambutol) that have shown in vitro activity against MAC or clinical benefit in MAC treatment.

For treatment and prophylaxis of mycobacterial infections in adults, the recommended dose of Veclam is 500 mg every 12 hours.

For treatment and prophylaxis of mycobacterial infections in pediatric patients, the recommended dose is 7.5 mg/kg every 12 hours up to 500 mg every 12 hours.

Veclam therapy should continue if clinical response is observed. Veclam can be discontinued when the patient is considered at low risk of disseminated infection.


Overdose symptoms may include severe stomach pain, nausea, vomiting, or diarrhea.


Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F) away from moisture and heat. Keep container tightly closed. Protect from light. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Veclam 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.


Concomitant cisapride, pimozide, ergots, HMG-CoA reductase inhibitors extensively metabolized by CYP3A4 (lovastatin or simvastatin). History of QT prolongation or ventricular cardiac arrhythmia (including torsades de pointes). Concomitant colchicine (in renal or hepatic impairment). Cholestatic jaundice/hepatic dysfunction with prior clarithromycin use.

veclam antibiotic

The nonsteroidal anti-inflammatory drugs have been shown to support cytoprotection of cells by shifting cells toward a quiescent state (G(0)/G(1)). Extracellular signal-regulated kinase (ERK) is required for cells to pass from G(1) phase into S phase, and macrolide antibiotics can inhibit ERK1/2 phosphorylation. However, previous reports suggest that macrolide antibiotics do not affect cell growth in bronchial epithelial cells. Therefore, we studied normal human bronchial epithelial (NHBE) cells to determine whether clarithromycin (CAM) suppresses ERK, delays bronchial epithelial cells from progressing to S phase, and delays cell growth. Exposure to CAM at 10 microg/ml daily over 4 days irreversibly decreased the cell proliferation with and without growth supplements (P < 0.0001). CAM also inhibited ERK1/2 phosphorylation over the first 90 min of exposure (P < 0.05 for 30 min, P < 0.0001 for 60 min, and P < 0.01 for 90 min) and decreased the ratio of phosphorylated ERK1/2 (pERK1/2) to total ERK1/2 (tERK1/2) (P < 0.0001). Incubation with CAM for 48 h increased the proportion of cells in G(1) phase (means +/- standard deviations) from 63.5% +/- 0.9% to 79.1% +/- 1.4% (P < 0.0001), decreased that in S phase from 19.8% +/- 1.2% to 10.0% +/- 2.1% (P < 0.01), and decreased that in G(2)/M phase from 16.7% +/- 0.4% to 11.0% +/- 0.8% (P < 0.001). In contrast, the ratio of pMEK1/2 to tMEK1/2 was not altered after exposure to CAM. These results suggest that macrolide antibiotics can delay the progression of NHBE cells from G(1) phase to S phase and can slow cell growth, probably through the suppression of ERK1/2.

veclam antibiotics

Although no regimen can eradicate in 100% of patients, factors that may affect the eradication rates have been poorly studied.

veclam 4 mg

On the whole rates of H. pylori antibiotic resistance were 47.22% (30.5%-75.02%) for metronidazole, 19.74% (5.46%-30.8%) for clarithromycin, 18.94% (14.19%-25.28%) for levofloxacin, and 14.67% (2%-40.87%) for amoxicillin, 11.70% (0%-50%) for tetracycline, 11.5% (0%-23%) for furazolidon and 6.75% (1%-12.45%) for rifabutin. The frequency of tetracycline, metronidazole and amoxicillin resistance was higher in Africa, while clarithromycin and levofloxacin resistance was higher in North America and Asian, respectively.

veclam 500 mg claritromicina

This study was conducted to evaluate the activity of levofloxacin in comparison with a range of antibacterial agents against recent isolates obtained consecutively from patients with community-acquired pneumonia (CAP) or acute exacerbation of chronic bronchitis (AECB) during the period 1995 to 1996. Susceptibility testing was carried out by either microdilution or the Etest, and interpreted according to NCCLS breakpoints. The activity of levofloxacin was compared with that of amoxycillin, amoxycillin-clavulanate, cefuroxime, cefixime, erythromycin, roxithromycin, clarithromycin, azithromycin, ofloxacin and ciprofloxacin. Clinically significant numbers of bacteria were recovered from 31 CAP and 94 AECB specimens. The predominant bacterial species in the CAP specimens were Streptococcus pneumoniae (21 isolates) and Haemophilus influenzae (four isolates). The AECB isolates mainly consisted of S. pneumoniae (38%), Moraxella catarrhalis (26%), H. influenzae (19%) and Pseudomonas aeruginosa (10%). The overall percentage susceptible of the isolates for each antibiotic was: amoxycillin, 64%; amoxycillin-clavulanate, 89%; cefuroxime, 87%; cefixime, 78%; erythromycin, 85%; roxithromycin, 87%; clarithromycin, 87%; azithromycin, 85%; ofloxacin, 95%; ciprofloxacin, 95%; and levofloxacin, 97%. The activities of levofloxacin and the other agents were also compared against 40 S. pneumoniae isolates, of which 20 were penicillin-non-susceptible, recovered from CAP and AECB specimens during the period 1994 to 1996. These strains were all susceptible to levofloxacin, but only 50% were susceptible to ciprofloxacin and 80% to ofloxacin. Twenty M. catarrhalis, 20 H. influenzae and 20 methicillin-susceptible S. aureus isolates were also all susceptible to levofloxacin. Furthermore, 20 community-acquired P. aeruginosa isolates showed similar percentage susceptible rates to levofloxacin and ciprofloxacin. These in-vitro results suggest that levofloxacin may be useful in the treatment of community-acquired lower respiratory tract infections.

veclam 500 mg

Prolonged administration of two antibiotics (of which one must be clarithromycin) in addition to surgery was well-tolerated and could be useful in patients with NTMB neck lymphadenitis.

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Biological treatments, chemoimmunotherapy, and radiotherapy are associated with excellent disease control in both gastric and extragastric mucosa-associated lymphoid tissue (MALT) lymphomas. Systemic treatment approaches with both oral and i.v. agents are being increasingly studied, not only for patients with disseminated MALT lymphoma, but also for those with localized disease. To date, however, recommendations for the use of available systemic modalities have not been clearly defined.

veclam 250 mg

The estimated probability of being ulcer-free at 6 months was 0.56 (95% CI 0.47-0.65) on eradication treatment and 0.53 (0.44-0.62) on on control treatment (p=0.80). Time to treatment failure did not differ between groups for ulcers or dyspepsia alone, per-protocol analysis, or final H. pylori status. 66% (58-74) of the eradication group compared with 14% (8-20) of the control group had a final negative H. pylori result (p<0.001). Fewer baseline gastric ulcers healed among eradication-treatment patients than among controls (72 vs 100% at 8 weeks, p=0.006).

veclam compresse 500 mg

The aim of this study was to develop an efficient method of preparing less irritant clarithromycin-loaded liposomes (CLA-Lip) for injection with a high drug loading and to evaluate their physicochemical characteristics before and after lyophilization. CLA-Lip were prepared using the film-dispersion method with sodium cholesterol sulfate (SCS) and n-hexyl acid as the regulators and then lyophilized. The liposomes were characterized in terms of their size, size distribution, zeta potential, morphology, in vitro release, haemolysis, and lyophilization and irritation testing was carried out. The TEM images revealed that the structure of the CLA-Lip were multilamellar and of a regular size of around 100 nm. In addition, the lyophilized CLA-Lip were characterized by DSC and Infrared spectroscopy to confirm the structure. H-bonding and salt-forming reactions were used to ensure that clarithromycin (CLA) was stably encapsulated in the liposomes. This method provided a 30-fold increase in the concentration of clarithromycin relative to that in aqueous solution. Sucrose was found to be the best protective agent and was added in an amount of 12.5% (w/v). According to the mouse scratch test and the rat paw lick test, the pain of CLA-Lip was significantly reduce by approximately 80% compared with the solution of clarithromycin phosphate. In addition, rabbit ear vein experiments produced similar results. These findings suggested that CLA-Lip was a stable delivery system with less irritation, which should be extremely suitable for clinical application.

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Antimicrobial resistance is one of the main obstacles for an effective eradication of H. pylori infection.

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veclam 250 mg granulato 2015-10-08

In the last decade a 10-day schema of sequential therapy of Helicobacter pylori infection based on proton pomp Chloramphenicol Eye Drops Babies Dose inhibitor (PPI), amoxicillin (AMO), clarithromycin (CLA) and metronidazole (MET) has been introduced. Many studies have emphasized greater efficacy of this therapy in comparison to the efficacy of the standard 7-day triple therapy (PPI + AMO + CLA or MET).

veclam antibiotic 2017-06-23

Idiopathic nontransplant-related childhood bronchiolitis obliterans is an uncommon disease. Most patients present with chronic recurrent dyspnea, cough and wheezing, which are also features of asthma, by far a much more common condition. The present case study reports on a six-year-old girl who presented to a tertiary care centre with recurrent episodes of respiratory distress on a background of baseline tachypnea, chronic hypoxemia and exertional dyspnea. Her past medical history revealed significant lung disease in infancy, including respiratory syncytial virus bronchiolitis and repaired gastroesophageal reflux. She was treated for 'asthma exacerbations' throughout her early childhood years. Bronchiolitis obliterans was Tetra Safestart Reviews subsequently diagnosed with an open lung biopsy. She did not have sustained improvement with systemic corticosteroids, hydroxychloroquine or clarithromycin. Cardiac catheterization confirmed the presence of secondary pulmonary hypertension. Treatment options remain a dilemma for this patient because there is no known effective treatment for this condition, and the natural history is not well understood. The present case demonstrates the need for careful workup in 'atypical asthma', and the urgent need for further research into the rare lung diseases of childhood.

veclam 125 mg 2016-10-08

The overall first-line eradication rate was 79.9% (341/427) with EPZ vs. 86.3% (377/439) with VPZ (p = 0.019). The second-line eradication rate was 83. Metrocream Rosacea Cost 3% (45/51) with EPZ vs. 91.1% (41/45) with VPZ (p = 0.900).

veclam 4 mg 2017-10-16

For 8 weeks, patients received 200 mg of clarithromycin or identical-appearing placebo twice daily. We assessed the effects of treatment with clarithromycin on bronchoconstriction precipitated by inhalation of methacholine in 17 adults with mild or moderate bronchial asthma who were in stable clinical condition. A double-blind, randomized, crossover design was used. Eosinophil counts and eosinophilic cationic protein (ECP) levels were determined in blood and sputum samples obtained on the morning of the methacholine provocation Noroxin Chest Infection testing day.

veclam 500 mg claritromicina 2016-07-20

One hundred eighteen children with acute episodes of wheezing and 41 age- and sex-matched healthy controls, aged 5 to 16 years Cephalexin Overdose .

veclam 250 mg compresse 2015-01-19

Stimulation with S. aureus Newman supernatants was associated with an increase of IL-8 synthesis after 12 hours in all experiments. During the second 12 hours, IL-8 synthesis decreased and this effect was independent from any stimulus or inhibitor. However, coincubation of HNECs with ciprofloxacin was associated with a more extensive decrease of IL-8 synthesis. Similarly, addition of clarithromycin was associated with Zocin Dose a reduction of IL-8 synthesis although this effect was not significant. Coincubation with prednisolone resulted in a significant reduction of IL-8 levels.

veclam 500 mg 2016-11-03

Cytochrome P4503A (CYP3A) activity was Cefixime 400 Mg Gonorrhea reduced in all subjects by a mean level of 26% following clarithromycin treatment. This would result in a significant reduction in cyclosporine clearance in patients receiving clarithromycin.

veclam compresse 500 mg 2015-06-28

To determine the in vitro susceptibility of Mycobacterium chelonae isolates from corneal ulcers to various traditional Ci Cipro 85 Reviews and newly-developed antimicrobial agents, alone or in combination.

veclam 250 mg 2015-01-21

We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of antibiotic treatment for men and non-pregnant women with uncomplicated genital chlamydial infection?What are the effects of antibiotic treatment for pregnant women with uncomplicated genital chlamydial infection? We searched: Medline, Embase, The Cochrane Library, and other important databases up to September 2009 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA).

veclam antibiotics 2016-06-11

Our aim was to develop a rapid molecular test based on polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and making it possible to detect Helicobacter pylori directly from gastric biopsy samples, and to test its susceptibility to clarithromycin. A 629-bp fragment of the 23S rRNA gene of H. pylori was amplified by PCR and the mutations responsible for clarithromycin resistance were detected with Bsa1 and Bbs1 restriction endonucleases. Thirty-five gastric samples were tested in parallel by standard microbiologic methods (culture and clarithromycin susceptibility testing with E-test strips) and by PCR-RFLP. The 10 culture-negative samples were also PCR-negative. Sixteen out of the 25 culture-positive samples (64%) were PCR-positive. RFLP analysis could be done in 12 cases and the results were in agreement with those of the E-test: susceptibility in five cases, resistance in seven (six A2144G mutations and one A2143G mutation).