Antibiotics Home > Moxatag Warnings and Precautions

To ensure a safe and effective treatment, talk to your healthcare provider about precautions and warnings with Moxatag. For example, you may not be able to safely take it if you have certain health conditions, such as kidney disease or a penicillin allergy, or if you are taking certain medications. Safety concerns also apply to women who are pregnant or breastfeeding.

What Should I Tell My Healthcare Provider Before Taking Moxatag?

You should talk with your healthcare provider prior to taking Moxatag™ (amoxicillin ER) if you have:
  • Kidney disease, such as kidney failure (renal failure)
  • A penicillin allergy
  • Any other allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
  • Pregnant or thinking of becoming pregnant
  • Breastfeeding.
Make sure to tell your healthcare provider about any other medicines you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.

Specific Moxatag Warnings and Precautions

Some safety precautions and warnings to be aware of prior to taking Moxatag include the following:
  • Let your healthcare provider know if you experience bloody or watery diarrhea. While diarrhea is a common side effect of Moxatag, bloody or watery diarrhea may be a sign of a serious reaction to the medication that can occur when certain bacteria (Clostridium difficile) overgrow in the colon. This severe reaction can occur long after you stop taking the antibiotic and can lead to life-threatening complications.
  • The active ingredient in Moxatag belongs to the penicillin group of antibiotics. You should not take this drug if you are allergic to penicillin. Let your healthcare provider know immediately you notice any signs of an allergic reaction, such as a rash, itching, hives, wheezing, swelling of the mouth or lips, or difficulty breathing. An allergic reaction to Moxatag can be very dangerous.
  • Sometimes, antibiotics can cause yeast infections, as they can get rid of "good" bacteria that help protect against such infections. Let your healthcare provider know if you develop a vaginal yeast infection or thrush (a yeast infection of the mouth) while taking Moxatag.
  • This medication is not recommended for people with severe kidney disease.
  • Moxatag should not be used to treat viruses, such as the common cold or the flu. It is completely ineffective for treating viruses, and such use can lead to bacterial resistance.
  • It is important that you take Moxatag exactly as prescribed. Skipping doses or stopping treatment too early (even if you feel better) can lead to bacterial resistance.
  • In general, people with a mononucleosis infection ("mono") should not take Moxatag, as doing so increases the risk of developing a rash.
  • Moxatag can interact with other medications (see Moxatag Drug Interactions).
  • Moxatag is considered a pregnancy Category B medication. This means that it is probably safe for use during pregnancy, although the full risks are not known. Talk to your healthcare provider about the risks and benefits of using the drug when pregnant (see Amoxicillin and Pregnancy for more information).
  • This medicine passes through breast milk. Therefore, if you are breastfeeding or plan to start, be sure to talk with your healthcare provider about using Moxatag (see Amoxicillin and Breastfeeding for more information).
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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