The short answer
Calcium can matter when it is taken as an antacid that raises stomach pH. Take the antacid at least two hours before or at least four hours after oral rilpivirine.
What this answer covers
Oral rilpivirine with calcium products that neutralize stomach acid. A nutrient name alone does not identify an antacid or establish its acid-neutralizing effect.
- Supplement or preparation
- Calcium
- Medication ingredient
- rilpivirine
Check the exact medicine and regimen
This review applies to oral rilpivirine products such as EDURANT. The adult tablet and pediatric dispersible tablets have different instructions and cannot simply be swapped by milligram amount. Long-acting injections do not share this stomach-absorption exposure. Keep the prescribed combination and meal plan.
Identify an antacid before applying the rule
The concern is reduced drug availability when stomach acidity is lowered. The rilpivirine label specifically lists aluminum or magnesium hydroxide and calcium carbonate antacids. A different mineral salt used for nutrition is not automatically equivalent, and the label on the actual product matters.
Keep the dosing order clear
Take the antacid at least two hours before or at least four hours after oral rilpivirine. Ask the pharmacist to place the antacid, meals and the complete prescription on one schedule. Do not substitute this rule for proton-pump inhibitor or H2-blocker instructions; those products can have different restrictions.
Understand what the evidence does not prove
The exact label gives this practical precaution, but does not quantify an effect for every calcium, magnesium or aluminum supplement. Oral rilpivirine still needs a meal; a schedule change should preserve that requirement.
Evidence and practical considerations
Timing & monitoring
The exact oral label supports an acid-neutralizing product precaution and a directional schedule, not a blanket interaction with every form of this mineral.
- Exact scope
- Oral rilpivirine with calcium products that neutralize stomach acid. A nutrient name alone does not identify an antacid or establish its acid-neutralizing effect. with RxNorm 1102270 IN rilpivirine. Oral hydrochloride EDURANT 25 mg tablets and separately dosed EDURANT PED suspension tablets; not long-acting injectable rilpivirine or automatic fixed-combination substitution.
- Medication form and route
- Oral
What remains uncertain
- Preparation-specific oral acidity precaution, not a blanket cation-chelation claim. Direction of dosing order retained; no transfer to topical/injected formulations or other acid-reducer classes.
Factors that may matter: Exact oral regimen and formulation; Booster or fixed-combination context; Mineral preparation and dosing order; Food requirements.
Read the supporting source summaries
Source 1: Current original prescribing information
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: Patients prescribed the specified oral regimen.
Antacids at least two hours before or four hours after oral rilpivirine. Hypericum contraindicated. Protein drink/yogurt alone does not substitute for meal.
How this applies: RxNorm 1102270 IN rilpivirine. Oral hydrochloride EDURANT 25 mg tablets and separately dosed EDURANT PED suspension tablets; not long-acting injectable rilpivirine or automatic fixed-combination substitution.
Oral pH/food instructions do not apply automatically to injection. Mineral antacid activity, not elemental name alone, is relevant.
Source 2: Medication terminology
rxnav.nlm.nih.gov · Source check Sep 10, 2026
Population: Terminology.
rilpivirine is IN.
How this applies: Exact ingredient.
Not clinical evidence.
Research assessment: · Open full citations ↗
Review and change history
- Publication status
- Published research summary
- Clinical review
- Not yet recorded
| Date | Update |
|---|---|
| Research summary published | |
| Article prepared | |
| Sources checked and article drafted. |
Article revision: 575c2e510c88a72e
This guide brings together the evidence records used by our interaction checker. Each finding retains its own preparation limits, research date, and source summaries.
Full citations require verification. Reading this answer and the source summaries does not.
Taking other supplements or medications?
Use the checker to explore your other combinations. Ask a pharmacist to review the exact products, amounts and medical conditions in your complete list.
Open the interaction checkerInformation, not medical advice. Do not change prescribed treatment based on this guide.