risedronate
Brand names: Actonel
Risedronate sodium delayed-release tablets help treat osteoporosis after menopause. It helps to make your bones stronger and less likely to break.
Drug Pricing (NADAC)
Brand Price
$81.74/unit
Generic Price
$21.97/unit
Generic Savings
73%
Generic Available
Yes (8 manufacturers)
Pricing data from NADAC (CMS), effective December 18, 2024. Compare all drug costs →
What it does
This medicine treats osteoporosis in women after menopause.
Common side effects
Diarrhea, Flu-like symptoms, Joint pain
Key warnings
Risedronate can cause problems with your esophagus.
How It Works
Risedronate belongs to a class of drugs called bisphosphonates. It works by slowing down the breakdown of bone. This helps to increase bone density and reduce the risk of fractures.
How to Take It
Take one 35 mg tablet once a week. Take it in the morning right after you finish breakfast with at least 4 ounces of plain water. Do not lie down for at least 30 minutes after taking the tablet. If you don't get enough calcium and vitamin D from food, take supplements.
Pregnancy & Breastfeeding
Stop taking risedronate if you become pregnant. This medicine can affect the baby's bones. It is not known if risedronate passes into breast milk.
Missed Dose
If you miss your weekly dose, take it the next morning after you remember. Then, go back to your regular weekly schedule. Do not take two tablets on the same day.
Storage
Store at room temperature between 68°F and 77°F.
Side Effects (from patient reports)
Based on 30,337 FDA adverse event reports.
FDA Adverse Event Report Analysis
Detailed analysis of 30,089 reports from the FDA Adverse Event Reporting System (FAERS). Reports span 2003–2025.
Total Reports
30,089
Death-Related Reports
2,696
Hospitalization Reports
12,023
Top Indication
Product Used For Unknown Indication
Gender Distribution
Age Distribution
Most Reported Adverse Reactions (FAERS)
| # | Reaction | Reports |
|---|---|---|
| 1 | ARTHRALGIA | 3,730 |
| 2 | DRUG INEFFECTIVE | 3,621 |
| 3 | PAIN | 3,613 |
| 4 | NAUSEA | 2,991 |
| 5 | FATIGUE | 2,911 |
| 6 | OFF LABEL USE | 2,817 |
| 7 | DYSPNOEA | 2,802 |
| 8 | VOMITING | 2,735 |
| 9 | DIARRHOEA | 2,685 |
| 10 | PNEUMONIA | 2,434 |
| 11 | DRUG HYPERSENSITIVITY | 2,417 |
| 12 | HEADACHE | 2,327 |
| 13 | RHEUMATOID ARTHRITIS | 2,319 |
| 14 | MALAISE | 2,297 |
| 15 | PAIN IN EXTREMITY | 2,136 |
Reactions in Death Reports
Reactions in Hospitalization Reports
Source: FDA FAERS (Adverse Event Reporting System) FDA FAERS (Adverse Event Reporting System) Reports are voluntary and do not establish causation
Serious Warnings
Risedronate can cause problems with your esophagus. Follow the directions carefully and stay upright for 30 minutes after taking it. It can also cause bone, joint, or muscle pain. Tell your doctor right away if you have new pain in your thigh or groin.
Known Drug Interactions
7.4 Aspirin/Nonsteroidal Anti-Inflammatory Drugs In the Phase 3 study comparing risedronate sodium 35 mg once-a-week immediately following breakfast and risedronate sodium 5 mg daily, 18% of NSAID users (any use) in both groups developed upper gastrointestinal adverse reactions.
Mechanism: Both of these drugs can be tough on the stomach lining, and taking them together increases the chance of having stomach pain or irritation.
What to do: If you take aspirin often, let your doctor know so they can monitor you for any stomach problems or discomfort.
Co-administration of risedronate sodium with the PPI, esomeprazole, increased risedronate bioavailability.
Mechanism: This acid-reducing medicine can cause your body to absorb a larger amount of the bone medication than it normally would.
What to do: Your doctor may need to monitor you more closely for side effects since more of the drug is entering your system.
Common Questions
Can I take risedronate with food?
What if I have trouble swallowing pills?
Can I take calcium supplements at the same time?
How long should I take this medicine?
What should I do if I get heartburn?
Can I lie down right after taking the pill?
What if I have kidney problems?
Can men take this medication?
What if I am already taking Actonel?
Can I take antacids with risedronate?
What are the common side effects of risedronate?
Does risedronate interact with other medications?
What drug class is risedronate?
Is there a generic version of risedronate?
Is risedronate safe during pregnancy?
Related Medications in Bisphosphonate
Other drugs grouped near risedronate — same-class peers and common alternatives.
abaloparatide
Tymlos
Tymlos is a medicine to treat osteoporosis.
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alendronate
Fosamax
Binosto is a medicine that helps make your bones stronger.
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calcitonin
Miacalcin, Fortical
Calcitonin is a medicine that helps manage calcium levels in your body.
Compare with risedronate →
denosumab
Prolia, Xgeva
Stoboclo is a medicine that helps to treat osteoporosis and increase bone mass.
Compare with risedronate →
ibandronate
Boniva
Ibandronate (Boniva) is a medicine that helps treat and prevent bone loss in women after menopause.
Compare with risedronate →
Medication Guides
Understanding Drug Interactions
How CYP450 enzymes, inhibitors, and inducers affect your medications
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Common Drug Interactions
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Related Health & Safety Data
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What the FDA Data Shows for risedronate
The FDA label for risedronate (sold under brand names such as Actonel) classifies it as a prescription-only medication in the Bisphosphonate class. This medicine treats osteoporosis in women after menopause. Official labeling lists 5 commonly reported side effects, including Diarrhea, Flu-like symptoms, Joint pain.
Post-market surveillance from the FDA Adverse Event Reporting System (FAERS) captures real-world experience. For this drug, FAERS contains 30,337 voluntary reports. The database also lists 2 documented drug interactions derived from FDA labeling, with the top-flagged interaction rated minor severity. NADAC pricing from CMS shows a generic unit cost of $21.97 versus $81.74 for the brand — a 73% generic savings.
Report counts do not establish causation — a FAERS entry documents a temporal association, not proof that the drug produced the outcome. Widely prescribed medications naturally accumulate more reports than niche therapies, so raw totals must be interpreted alongside total exposure. Shortage status, recall history, and patent information further shape supply and switching decisions. This page summarizes public FDA data for educational purposes only and is not a substitute for professional medical advice — always consult a licensed healthcare provider before starting, stopping, or changing any medication.
Data Sources
Drug labeling: FDA Drug Labels (SPL/DailyMed). Adverse events: FDA Adverse Event Reporting System (FAERS). Pricing: CMS National Average Drug Acquisition Cost (NADAC).
FAERS reports are voluntary and do not establish causation. Drug interactions are derived from FDA labeling and clinical references. Always consult a healthcare professional before making medication decisions.
Last updated: September 9, 2020
Read our methodology — how this data is sourced, computed, and verified.
All federal data sources used on this page
- FDA Orange Book — approved drug products with therapeutic equivalence. accessdata.fda.gov/cder/ob
- FDA DailyMed — NIH-hosted drug labeling for FDA-approved meds. dailymed.nlm.nih.gov
- FDA Adverse Event Reporting System (FAERS) — post-marketing safety surveillance. fda.gov/drugs/faers
- NLM RxNorm — standardized clinical drug nomenclature. nlm.nih.gov/research/umls/rxnorm
- CMS Medicare Part B Drug Average Sales Price Files — federal drug pricing data. cms.gov/medicare/part-b-drugs/asp
- FDA Drug Shortages Database — current and resolved drug shortage tracking. accessdata.fda.gov/drugshortages