Generic Zithromax (Azithromycin)
Zithromax is a macrolide antibiotic to treat infections of upper and low respiratory tract, especially ear infections, pneumonia.
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Product Description
Azithromycin oral tablet can interact with other medications, vitamins, or herbs you may be taking. What to do if you miss a dose: Take your dose as soon as you remember. A: Zitromax have shown that antibiotics such as azithromycin Zithromax, Zmax may decrease hormonal birth control efficacy. Common side effects include nauseavomitingdiarrhea and upset stomach. Answers represent the opinions of our medical experts. Study Start Date :. Antibiotics are prescription drugs that help treat infections. The New England Journal of Medicine. If you become pregnant while taking azithromycin, call your doctor.

Zithromax - think, that

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Common use

Zithromax is a semi-synthetic macrolide antibiotic chemically related to erythromycin which is active against majority of species of gram positive and gram negative microorganisms such as genus Staphylococcus; S. aureus, S. pneumoiane, S. pyogenes, S. agalactiae, Haemophilus influenzae and parainfluenzae, Moraxela catarrhalis, Bacteroides fragilis, Escherichia coli, Bordetella ssp., Borrelia burgdorferi, Haemophilus ducreui, Nisseria gonorrhoeae Ø Chlamidia trachomati. In vitro it showed activity against Legionella pneumophila, Mycoplasma pneumoiae hominis, Helicobacter pylori, Toxoplasma gondii, Ureaplasma urealiticum. As a Macrolide antibiotic Zithromax inhibits bacterial protein synthesis and prevents bacteria from growth and propagation. It is used to treat infections of upper and low respiratory organs (tonsillitis, otitis, sinusitis, pneumonia), urogenital infections (urethritis, prostatitis, cervicitis, adnexitis caused by chlamydia, gonorrhea, early syphilis), intestinal infections, ulcer of stomach and duodenum.

Dosage and directions

Take exactly as prescribed and do not discontinue your treatment even if you feel fine and your symptoms improved without permission of your doctor. Take Zithromax tablet with a big glass of water. To prepare a liquid suspension form one dose packet mix one packet with 2 ounces of water, shake and drink at once. Do not use the suspension which was prepared longer than 12 hours ago. Tablets and suspension can be taken with or without food while capsules should be taken on an empty stomach 2 hours before or after a meal.


There are no evidences if Zithromax affects an unborn baby or excretes in a breast milk. This medication should be used in pregnant and breastfeeding women only if expected benefit prevails over potential risk for the baby.


Hypersensitivity to Zithromax and related drugs such as azithromycin or erythromycin.

Possible side effect

Among side effects may be diarrhea or loose stools, nausea, abdominal pain, and vomiting, uneven heartbeats, loss of appetite, dark urine, clay-colored stools, jaundice, fever, rash, red skin, headache. You should call your doctor and inform about such symptoms or get immediate medical attention.

Drug interaction

Zithromax is not recommended to take with aluminum- or magnesium- based antacids, such as Mylanta or Maalox as they decrease its absorption in the intestine.

Missed dose

Take the missed dose when you remember. If it is almost time of the next intake just skip it and return to your schedule.


Symptoms of overdose may appear as nausea, vomiting, diarrhea, and stomach discomfort. In this case look for immediate medical attention.


Store at room temperature between 59-77 F (15-25 C) away from light and moisture, kids and pets. Do not store the liquid longer than 10 days.


We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.


Active Ingredients:

  • Doxycycline

Action mechanism and therapeutic effect of the medication:

Doxycycline is half-synthetic tetracycline antibiotic with a broad spectrum of antibacterial activity. Doxycycline exerts bacteriostatic action associated with suppressing the synthesis of proteins on ribosomes in microbial cell. Doxycycline is active against aerobic gram-positive bacteria Staphylococcus spp, Bacillus anthracis, Listeria monocytogenes; aerobic bacteria:Clostridium spp.

Medical indications: Doxycycline is indicated for the treatment of infections caused by sysceptible microorganisms:

  • ENT infections
  • Gastrointestinal infections
  • Infections of the upper and lower respiratory system
  • Skin and soft tissue infections
  • Urogenital infections
  • Syphilis (when unable to take penicillin)
  • Some respiratory or urinary tract infections (UTIs)
  • Plague
  • Cholera
  • Certain types of pneumonia
  • Chlamydia
  • Rocky Mountain spotted fever
  • Tularemia
  • Typhus fever
  • Tick fever
  • Gonorrhea
  • Lyme disease
  • Anthrax infection treatment
  • Rosacea treatment
  • Gum disease treatment
  • Malaria treatment

Doxycyline contradictions, precautions and warnings:

Doxycycline is contraindicated for use in:

  • Hypersensitivity to doxycycline and other components of the medication
  • Severe liver diseases
  • Severe kidney diseases
  • History of pseudo-membranous colitis
  • Pregnancy (Doxycycline is a pregnancy category D meaning that it can cause significant damage to the fetus)
  • Breastfeeding
  • Frequent yeast infections

Doxycyline side effects:

As with any other drug, side effects can occur with Doxycyline. However, it does not mean that everyone who takes the medicine will experience these adverse effects. In most cases the preparation is well tolerated. The most common Doxycycline side effects include:

  • Decreased appetite
  • Vomiting
  • Stomach pain
  • Heartburn
  • Diarrhea
  • Photo-sensitivity
  • Nausea

If any side effects occur during the treatment make sure to consult your health care provider immediately. If you are unsure about anything related to Doxycyline, please talk to your doctor or pharmacist.

Drug interaction:

Doxycyline can potentially interact with the following groups of drugs:

  • Aluminum, calcium, magnesium, or iron products
  • Bile-acid sequestrant cholesterol drugs
  • Barbiturates
  • Peniccilins
  • Oral typhoid vaccine
  • Birth control pills
  • Anti-diarrheal drug (Bismuth subsalicylate)
  • Bipolar disorder treatment (Carbamazepine)
  • HIV treatment (Maraviroc)
  • Retinoids
  • Blood thinners (Warfarin)
  • ACE inhibitor (Quinapril)
  • Aldosterone antagonist (Eplerenone)
  • Opioid pain killer (Fentanyl)
  • Anticonvulsant (phenytoin)

It is possible that all drug interactions are not presented above. For this reason, we recommend you to talk with your health care provide about drug interactions with Doxycyline which may apply to you.

Additional information for the patients:

The preparation should be taken according to your doctor's recommendations. Never take the drug for conditions which are not presented in the the drug's leaflet. Try to keep the medicine out of the reach of children.