Is Mylanta Safe in Pregnancy

Reason

Used for heartburn in pregnancy, but dose limits matter. Avoid long-term or high-dose use without OB review.

Drug Information

Brand Name

Mylanta

Generic Name

aluminum hydroxide / magnesium hydroxide / simethicone

Drug Class

Antacid / antiflatulent

FDA Category

N/A (PLLR narrative label)

Rx Status

OTC

Safe Amount

Dosage must be determined by your provider based on individual risk/benefit. Use only the labeled OTC dose if your clinician says it is appropriate.

Effects

Pregnancy

Often used for heartburn in pregnancy. Do not use sodium bicarbonate products. Long-term or high-dose use is not advised.

Mother

Can cause constipation or diarrhea. High or long-term doses may affect mineral balance, especially with kidney disease.

Baby

No specific fetal harm is expected from short-term antacid use, but data are limited and high doses may cause problems.

Trimester Notes

1st Trimester

Often used if needed for heartburn, but use the smallest amount for the shortest time and check with your provider.

2nd Trimester

Can be used if needed, but do not use large or repeated doses without provider guidance.

3rd Trimester

Can be used for heartburn if your OB agrees, but avoid long-term or high-dose use.

Conditions & Warnings

• Consult OB/GYN or prescriber
• OTC pregnancy dosing limits may apply
• Avoid if you have kidney disease unless your prescriber says otherwise
• Do not use with sodium bicarbonate-containing antacids
• If symptoms are frequent, you may need a provider review

Alternatives

• Lifestyle changes such as smaller meals and avoiding trigger foods
• Calcium-containing antacids if your clinician recommends them
• Talk to your OB/GYN about other pregnancy heartburn options

References

• NHS
  https://www.nhs.uk/pregnancy/keeping-well/heartburn-and-indigestion/
• FDA/DailyMed
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