amoxicillin 500mg

Amoxicillin is a broad-spectrum antibiotic belonging to the group of semisynthetic penicillins. It is a hydroxyl analogue of ampicillin having bactericidal effect. It is active against aerobic gram-positive bacteria such as staphylococcus, streptococcus and aerobic gram-negative bacteria including Neisseria gonorrhoeae, Neisseria meningitidis (meningococcus), Escherichia Coli, Shigella, Salmonella, Klebsiella.

amoxicillin formula

Features of Amoxicillin

Microorganisms producing penicillinase are amoxicillin resistant. There is cross-resistance between amoxicillin and ampicillin. The anti-bacterial spectrum of amoxicillin is extended when it is taken in combination with clavulanic acid which is a beta-lactamase inhibitor. In this combination, it activity against Bacteroides spp., Legionella spp., Nocardia spp., Pseudomonas (Burkholderia) pseudomallei increases but Pseudomonas aeruginosa, Serratia marcescens are considered to be still resistant to the drug. Amoxicillin is easy to order via Canadian HealthCare Mall at a very attractive price. Check out our website and find “Amoxicillin” in the category of antibiotics.

Amoxicillin should be taken in case of such diseases as pharyngitis, sinusitis, tracheitis, laryngitis, bronchitis, pneumonia, quinsy, otitis, cystitis, urethritis, impetigo, brain fever and others.

Using During Pregnancy and Lactation

All the above-mentioned illnesses quite often rush into ordinary lives of future mothers. Presence of infection in the body, no doubt, requires treatment. In such cases, amoxicillin comes to the rescue. In any instruction on the drug use, you can read that it is undesirable to take this medication during pregnancy. In fact, everything is written correctly, however any rule has exceptions and it is just such a case. The thing is that the virus, which is present in the future mother’s body, can do much more harm to a fetus, than any antibiotic. It is from this understanding that doctors can prescribe amoxicillin during pregnancy. However, most health care professionals believe that the drug can only be prescribed in life threatening cases when there is a potential risk for a fetus. A pregnant woman should be very careful to her baby’s health.


Caution should be taken when administering the drug during breastfeeding as it can pass into breast milk and cause allergic or other side effects.

Contraindications to the Use of Amoxicillin

Contraindications to the use of Amoxicillin include the following:

  • increased sensitivity to any component of the drug;

  • allergic response to antibiotics of penicillin and cephalosporin groups (the so-called cross-allergy);

  • lymphatic leukaemia and infectious mononucleosis;

  • children under 5 (for the drug in the form of pills or capsules).


Prior to starting amoxicillin administration, inform your pharmacist or physician about your body’s possible allergic response to antibiotics belonging to cephalosporin or penicillin group. Other allergies should also be revealed. The medication can comprise other components which can trigger health problems. Your pharmacist can provide more information on this matter.

Make sure your pharmacist or physician is well aware of the diseases you have experienced or are currently suffering from. This primarily refers to kidney disorders and some viral infection, for example, infectious mononucleosis.

As Amoxicillin can affect the proper work of live bacterial vaccines (e.g. typhoid vaccine), avoid having vaccination/immunization when taking the drug unless your doctor gives you a permission.

How to Use Amoxicillin?

The medication dosage and course of treatment are based on individual approach, regarding the disease localization and severity as well as microorganisms’ sensitivity to the key agent of the drug.

Adults and children above 10 (weighing over 40 kg) are prescribed 500 mg (one 500 mg pill/capsule or two 250 mg pills/capsules) three times a day; in case of a severe form the dose is increased to 1 g (two 500 mg pills/capsules or four 250 mg pills/capsules) three times a day.

For treating nonspecific vaginitis, caused by Gardnerella vaginalis, doctors prescribe one 500 mg pill/capsule four times a week. In case of acute non-complicated gonorrhea, three grams (six 500 mg pills/capsules) should be taken once.

Except for gonorrhea, the treatment course should last from 5 to 14 days. The drug administration should be continued at least 2-3 days after symptoms disappearance. The maximum dose of 6 grams (i.e. 6000 mg) cannot be exceeded.

In our Canadian pharmacy, you can find different dosage options and choose the one that will be the most convenient for you.

Amoxicillin: Brand & Generic Version Comparison


Brand Version

Amoxicillin Generic (Amoxil Generic)

Main component




Bacterial infections

Bacterial infections

Other Properties

The same

The same


More expensive


As you can see, both versions feature the same characteristics. The only difference is the price.

Amoxicillin Price at Canadian Pharmacy

Amoxicillin is a relatively cheap antibiotic. However, some people can find its price unaffordable. What should they do? You must have heard about generic versions of drugs. These variations contain active agents identical to those of brand versions, but they cost much cheaper. It is explained by the fact that generic drug makers use a ready-made formula of the key ingredient and do not bare expenses for conducting research, testing or launching advertising campaigns. They just produce an effective medication.

As generic versions of drugs are legal in Canada, they are often offered by Canadian pharmacies. You can buy them in our chemist’s substantially saving your money. Our pharmacy offers attractive prices for Amoxicillin. Moreover, to buy the medication, you do not need to leave your home or send us a doctor’s prescription. Just make an order, and we will deliver the drug after a while.

In addition to Amoxicillin, you may find different categories of drugs, supplements and vitamins at Canadian Health and Care Mall.


Dr. Douglas Goldberg, MD is a Cardiology Specialist in Mineola, NY. He is affiliated with medical facilities Nyu Winthrop Hospital and Mercy Medical Center.