Prenatal Multivitamin and Potassium Chloride Interaction
Drug interaction information between Prenatal Multivitamin and Potassium Chloride.
Prenatal Multivitamin and Potassium Chloride have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Prenatal Multivitamin and Potassium Chloride. This page displays the available source-record category and label text. The category is not an individual risk estimate or medication-combination direction.
How They Interact
Potassium chloride can make it harder for your body to soak up vitamin B12 from your multivitamin.
FDA Label Information
Drugs which may interact with vitamin B 12 (Methylcobalamin): • Antibiotics, cholestyramine, colchicines, colestipol, metformin, para-aminosalicylic, and potassium chloride may decrease the absorption of vitamin B 12 .
Prenatal Multivitamin Also Interacts With
- Trimethoprim moderate
- Phenytoin moderate
- Metformin minor
- Fluoxetine minor
- Ibuprofen minor
Potassium Chloride Also Interacts With
- Amiloride major
- Spironolactone minor
- Eplerenone minor
- Aliskiren minor
- Glycopyrrolate minor
Frequently Asked Questions
What SPL severity band is on file for Prenatal Multivitamin + Potassium Chloride?
Compiled FDA labeling labels this pair minor. That is a source-record field, not an individual medication-combination decision.
Which drug in this pair has the larger labeled-interaction portfolio?
Prenatal Multivitamin has 23 labeled pairs on file vs Potassium Chloride's 6. In the minor band specifically: Prenatal Multivitamin has 21 (also Metformin, Fluoxetine, Ibuprofen, Lamotrigine); Potassium Chloride has 5 (also Spironolactone, Eplerenone, Aliskiren, Glycopyrrolate).
What mechanism field is on file for Prenatal Multivitamin and Potassium Chloride?
Potassium chloride can make it harder for your body to soak up vitamin B12 from your multivitamin.
Potassium Chloride carries more major-labeled pairs than Prenatal Multivitamin
SPL source-record counts only. This page's band is minor · classes on file: Prenatal Multivitamin (Prenatal Vitamin); Potassium Chloride (Electrolyte Supplement).
Potassium Chloride has 1 major-labeled pair vs Prenatal Multivitamin's 0. This page itself is in the minor band, not the major band.
0 major · 2 moderate · 21 minor · 23 total
- Other minor peers for Prenatal Multivitamin
- Metformin
- Fluoxetine
- Ibuprofen
- Lamotrigine
1 major · 0 moderate · 5 minor · 6 total
- Other minor peers for Potassium Chloride
- Spironolactone
- Eplerenone
- Aliskiren
- Glycopyrrolate
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. This registry does not provide individual medication-combination directions.
Read our methodology - how this data is sourced, computed, and verified.