Supplement stacks / Alendronate + Magnesium
Can You Take Alendronate with Magnesium?
Alendronate and Magnesium: one interaction flagged, scored 6/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.
Safety at a glance
Medium riskThis score comes from an AI-written analysis of the pair. Our interaction rules check it and can only make it stricter, never milder. Informational only: it can't account for your medications, conditions, or genetics.
What the AI-written analysis says
Taking Alendronate with Magnesium may lead to reduced absorption of Alendronate if taken together, necessitating careful timing. Magnesium is generally safe but should be monitored in individuals with kidney issues.
Alendronate is a prescription medication. This page describes publicly documented interactions — it can't see your dose, your other prescriptions, or your labs. Discuss any supplement with the prescriber or pharmacist who manages this medication before combining.
Known interactions
Magnesium can interfere with the absorption of Alendronate; it is recommended to separate their intake by at least 2 hours.
Alendronate
From the AI-written analysis.
Generally well-tolerated but may cause gastrointestinal issues; monitor for any unusual symptoms.
Typical dosage: As prescribed or as directed on the label
- Gastrointestinal discomfort
- Nausea
- Esophageal irritation
- Contraindicated in patients with certain esophageal conditions; consult healthcare provider for specific contraindications.
Magnesium
From the AI-written analysis.
Generally safe at recommended doses; caution in individuals with kidney disease.
Typical dosage: 200-400 mg daily.
- Diarrhea
- Nausea
- Abdominal cramping
- Excessive intake can lead to toxicity; monitor kidney function.
Timing
Take as prescribed — we do not schedule prescription medications. Follow the label or your prescriber, and ask your pharmacist before changing when you take it.
Watch out for
- Calcium, iron, magnesium, zinc, antacids, and multivitamins bind oral bisphosphonate bone medications (such as alendronate, risedronate, and ibandronate) in the gut and can largely block absorption of a medication that is only minimally absorbed to begin with. Prescribing information has alendronate, immediate-release risedronate and ibandronate taken first thing in the morning with plain water, at least 30-60 minutes before anything else, and delayed-release risedronate (Atelvia) taken right after breakfast, with calcium, antacids, magnesium and iron at another time of day. Either way, the calcium many people are advised to use for bone health fits later in the day. Follow the prescriber's or pharmacist's spacing directions rather than combining doses.
- Separate the intake of Alendronate and Magnesium by at least 2 hours to avoid absorption issues.
Frequently asked questions
Can you take Alendronate and Magnesium together?
Alendronate and Magnesium: one interaction flagged, scored 6/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.
What score does the Alendronate and Magnesium combination get?
The Alendronate and Magnesium combination is scored 6/10 (medium risk). The score comes from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice. Always confirm with a healthcare professional.
When should you take Alendronate and Magnesium?
Take as prescribed — we do not schedule prescription medications. Follow the label or your prescriber, and ask your pharmacist before changing when you take it.
What should you watch out for when combining Alendronate and Magnesium?
Calcium, iron, magnesium, zinc, antacids, and multivitamins bind oral bisphosphonate bone medications (such as alendronate, risedronate, and ibandronate) in the gut and can largely block absorption of a medication that is only minimally absorbed to begin with. Prescribing information has alendronate, immediate-release risedronate and ibandronate taken first thing in the morning with plain water, at least 30-60 minutes before anything else, and delayed-release risedronate (Atelvia) taken right after breakfast, with calcium, antacids, magnesium and iron at another time of day. Either way, the calcium many people are advised to use for bone health fits later in the day. Follow the prescriber's or pharmacist's spacing directions rather than combining doses. Separate the intake of Alendronate and Magnesium by at least 2 hours to avoid absorption issues.
Check your full list
Taking more than these two? Add everything you take, medicines included, to your list. We check each supplement on your list against the rest of it, and name anything we could not check. Free, and you don’t need an account.
Check my listWhat your DNA adds
Some genes in a raw 23andMe or AncestryDNA file are linked to how the body handles nutrients. The DNA report says what yours are linked to and, where there is one, which blood test would tell you more.
See the DNA reportRelated combinations
Not medical advice
This analysis is based on general supplement information. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult qualified healthcare providers before starting any supplement regimen.
AI-written analysis generated September 2, 2026, checked by our interaction rules · How our analysis works