7 Interactions found for:
Drug Interactions
Moderate
Metoprolol Succinate Er
+ Prednisone
The following applies to the ingredients: Metoprolol (found in Metoprolol Succinate Er) and Prednisone
PredniSONE may reduce the effects of metoprolol in lowering blood pressure. The interaction is most likely to occur when predniSONE is used for more than a week, since prolonged use can cause sodium and water retention. Let your doctor know if you experience sudden, unexplained weight gain or swelling of the hands, ankles, or feet. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Drug and Food Interactions
Moderate
Metoprolol Succinate Er
+ Food
The following applies to the ingredients: Metoprolol (found in Metoprolol Succinate Er)
Food can enhance the levels of metoprolol in your body. You should take metoprolol at the same time each day, preferably with or immediately following meals. This will make it easier for your body to absorb the medication. Avoid drinking alcohol, which could increase drowsiness and dizziness while you are taking metoprolol. Metoprolol is only part of a complete program of treatment that also includes diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely.
The following applies to the ingredients: Metoprolol (found in Metoprolol Succinate Er)
Using metoprolol together with multivitamin with minerals may decrease the effects of metoprolol. Separate the administration times of metoprolol and multivitamin with minerals by at least 2 hours. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Moderate
Prednisone
+ Food
The following applies to the ingredients: Prednisone
Using predniSONE together with alcohol or grapefruit may increase the risk of side effects of predniSONE. You may want to limit your consumption of grapefruit, grapefruit juice, and/or alcohol during treatment with predniSONE. Talk to your doctor if you have any questions or concerns. You should seek immediate medical attention if you experience any unusual bleeding or bruising, or have other signs and symptoms of bleeding such as dizziness; lightheadedness; red or black, tarry stools; coughing up or vomiting fresh or dried blood that looks like coffee grounds; severe headache; and weakness. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Drug and Pregnancy Interactions
Major
Prednisone
+ Pregnancy
The following applies to the ingredients: Prednisone
Professional Content
This drug should only be used during pregnancy only if the benefit outweighs the risk to the fetus.
AU TGA pregnancy category: A
US FDA pregnancy category: Not assigned
Risk summary: Available data suggest a small but inconsistent increased risk of orofacial clefts with corticosteroid use during the first trimester. Intrauterine growth restriction and decreased birth weight have also been reported with maternal use of corticosteroids during pregnancy, but the underlying maternal condition may have contributed to these risks.
Comments:
-Women who become pregnant while using this drug should be apprised of the potential fetal risks.
-Observe for signs and symptoms of hypoadrenalism in infants exposed to this drug in utero.
-The short-term use of corticosteroids antepartum for the prevention of respiratory distress syndrome does not seem to pose a risk to the fetus or newborn infant.
Animal studies have revealed evidence of teratogenicity at a maternal dose equivalent to 100 mg in a 60 kg human based on body surface area (BSA); fetolethality and fetotoxicity were observed at a maternal dose equivalent to 290 mg in a 60 kg human based on BSA; constriction of the fetal ductus arteriosus has also been observed. There are no adequate and well controlled studies in pregnant women. However, placental and birth weights have been reduced in humans after long term treatment with corticosteroids. Maternal pulmonary edema with inhibition of uterine contractions and fluid overload has also been reported with corticosteroids. Additionally, adrenal cortex suppression may occur in newborns with long term maternal corticosteroid use.
Menstrual irregularities and altered motility and number of spermatozoa have been reported with clinical use of corticosteroids. Animal studies with corticosteroids have revealed impaired male fertility.
AU TGA pregnancy category A: Drugs which have been taken by a large number of pregnant women and women of childbearing age without any proven increase in the frequency of malformations or other direct or indirect harmful effects on the fetus having been observed.
US FDA pregnancy category Not Assigned: The US FDA has amended the pregnancy labeling rule for prescription drug products to require labeling that includes a summary of risk, a discussion of the data supporting that summary, and relevant information to help health care providers make prescribing decisions and counsel women about the use of drugs during pregnancy. Pregnancy categories A, B, C, D, and X are being phased out.
References
- "Product Information. Rayos (prednisone)." Horizon Therapeutics USA Inc (2016):
- "Product Information. PredniSONE (predniSONE)." Hikma USA (formerly West-Ward Pharmaceutical Corporation) DailyMed (2024):
- "Product Information. Panafcort (prednisone)." Aspen Pharmacare Australia Pty Ltd (2022):
Major
Metoprolol Succinate Er
+ Pregnancy
The following applies to the ingredients: Metoprolol (found in Metoprolol Succinate Er)
Professional Content
Safety has not been established during pregnancy.
-According to some authorities: Use is not recommended unless benefit outweighs risk; if used during pregnancy, administer the lowest possible dose and discontinue at least 2 to 3 days prior to expected delivery, if possible.
AU TGA pregnancy category: C
US FDA pregnancy category: Not assigned
Risk summary: Inconclusive data available on the use of this drug in pregnant women to inform a drug-related risk.
Comments:
-Based on published literature, this drug may cause erectile dysfunction and inhibit sperm motility.
Animal studies have revealed increased post-implantation loss, fetolethality, and decreased neonatal survival. This drug crosses placenta, neonates born to mothers who are receiving metoprolol during pregnancy, may be at risk for hypotension, hypoglycemia, bradycardia, and respiratory depression.
AU TGA pregnancy category C: Drugs which, owing to their pharmacological effects, have caused or may be suspected of causing, harmful effects on the human fetus or neonate without causing malformations. These effects may be reversible. Accompanying texts should be consulted for further details.
US FDA pregnancy category Not Assigned: The US FDA has amended the pregnancy labeling rule for prescription drug products to require labeling that includes a summary of risk, a discussion of the data supporting that summary, and relevant information to help health care providers make prescribing decisions and counsel women about the use of drugs during pregnancy. Pregnancy categories A, B, C, D, and X are being phased out.
References
- "Product Information. Lopressor (metoprolol)." Novartis Pharmaceuticals PROD (2001):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
- "Product Information. Kapspargo Sprinkle (metoprolol)." Sun Pharmaceutical Industries (2023):
- "Product Information. Toprol-XL (metoprolol)." Melinta Therapeutics, Inc. (2023):
- "Product Information. Lopressor (metoprolol)." Validus Pharmaceuticals LLC (2025):
- "Product Information. Metoprolol Tartrate (obsolete) (metoprolol)." Hikma USA (formerly West-Ward Pharmaceutical Corporation) (2025):
Drug and Breastfeeding Interactions
Major
Metoprolol Succinate Er
+ Breastfeeding
The following applies to the ingredients: Metoprolol (found in Metoprolol Succinate Er)
Professional Content
AU and UK: Use is not recommended unless benefit outweighs risk.
US: This drug has been used without apparent harmful effects; caution is recommended.
Excreted into human milk: Yes (in small amounts)
Comments: This drug has been used without apparent harmful effects in the nursing infant.
An infant consuming 1 L of breast milk a day would receive a dose of less than 1 mg of drug.
References
- "Product Information. Lopressor (metoprolol)." Novartis Pharmaceuticals PROD (2001):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
Minor
Prednisone
+ Breastfeeding
The following applies to the ingredients: Prednisone
Professional Content
This drug should be used only if clearly needed
Excreted into human milk: Yes
Comments:
-If this drug is necessary, the lowest dose should be prescribed; theoretically, if high maternal doses are necessary, the dose the infant receives may be minimized by avoiding breastfeeding for 4 hours following dosing and using prednisolone instead of prednisone.
Amounts of glucocorticoids excreted into breast milk are low with a total infant daily dose calculated to be up to 0.23% of the maternal daily dose. For doses up to 10 mg/day, the amount of drug an infant receives via breast milk is undetectable; however the milk/plasma ratio increases with doses above 10 mg/day (e.g., 25% of the serum concentration is found in breast milk when dose is 80 mg/day). If this drug is necessary, the lowest dose should be prescribed as high doses of corticosteroids for long periods could produce infant growth and development problems and interfere with endogenous corticosteroid production. High doses might occasionally cause temporary loss of milk supply.
References
- "Product Information. Deltasone (prednisone)." Pharmacia and Upjohn PROD (2001):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
- United States National Library of Medicine "Toxnet. Toxicology Data Network. http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT" (2013):
- "Product Information. Rayos (prednisone)." Horizon Therapeutics USA Inc (2016):
- "Product Information. PredniSONE (prednisone)." Watson Pharmaceuticals (2016):
Therapeutic Duplication Warnings
No warnings were found for your selected drugs.Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
Switch to: Professional Interactions
| Drug Interaction Classification | |
|---|---|
These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication. |
|
| Major | Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. |
| Moderate | Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. |
| Minor | Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. |
| Unknown | No interaction information available. |
Disclaimer: This content should not be considered complete and should not be used in place of a call or visit to a healthcare professional. Use of this content is subject to our terms of use & medical disclaimer.