Risedronate Sodium

RISEDRONATE SODIUM- risedronate sodium hemi-pentahydrate tablet, delayed release
Impax Generics


1.1 Postmenopausal Osteoporosis

Risedronate sodium delayed-release tablets are indicated for the treatment of osteoporosis in postmenopausal women. In postmenopausal women, risedronate sodium has been shown to reduce the incidence of vertebral fractures and a composite endpoint of nonvertebral osteoporosis-related fractures [see Clinical Studies (14.1)].

1.2 Important Limitations of Use

The optimal duration of use has not been determined. The safety and effectiveness of risedronate sodium delayed-release tablets for the treatment of osteoporosis are based on clinical data of one year duration. All patients on bisphosphonate therapy should have the need for continued therapy re-evaluated on a periodic basis. Patients at low-risk for fracture should be considered for drug discontinuation after 3 to 5 years of use. Patients who discontinue therapy should have their risk for fracture re-evaluated periodically.


2.1 Treatment of Postmenopausal Osteoporosis

The recommended regimen is:

  • one 35 mg delayed-release tablet orally, taken once-a-week

2.2 Important Administration Instructions

Instruct patients to do the following:

  • Take risedronate sodium delayed-release tablets in the morning immediately followingbreakfast. Risedronate sodium delayed-release tablets should be taken immediately following breakfast and not under fasting conditions because of a higher risk of abdominal pain if taken before breakfast when fasting.
  • Swallow risedronate sodium delayed-release tablets whole while in an upright position and with at least 4 ounces of plain water to facilitate delivery to the stomach. Avoid lying down for 30 minutes after taking the medication [see Warnings and Precautions (5.2)].
  • Do not chew, cut, or crush risedronate sodium delayed-release tablets.

2.3 Recommendations for Calcium and Vitamin D Supplementation

Instruct patients to take supplemental calcium and vitamin D if dietary intake is inadequate [see Warnings and Precautions (5.3)] and to take calcium supplements, antacids, magnesium-based supplements or laxatives, and iron preparations at a different time of the day as they interfere with the absorption of risedronate sodium delayed-release tablets.

2.4 Administration Instructions for Missed Doses

If the once-weekly dose is missed, instruct patients to take one tablet on the morning after they remember and return to taking one tablet once-a-week, as originally scheduled on their chosen day. Patients should not take two tablets on the same day.


Delayed-release tablets: 35 mg, light orange oval film coated tablets, debossed with “AG” on one side and blank on the other side.


Risedronate sodium delayed-release tablets are contraindicated in patients with the following conditions:


5.1 Drug Products with the Same Active Ingredient

Risedronate sodium delayed-release tablets contain the same active ingredient found in Actonel®. A patient being treated with Actonel should not receive risedronate sodium delayed-release tablets.

​5.2 Upper Gastrointestinal Adverse Reactions

Risedronate sodium delayed-release tablets, like other bisphosphonates administered orally, may cause local irritation of the upper gastrointestinal mucosa. Because of these possible irritant effects and a potential for worsening of the underlying disease, caution should be used when risedronate sodium delayed-release tablets are given to patients with active upper gastrointestinal problems (such as known Barrett’s esophagus, dysphagia, other esophageal diseases, gastritis, duodenitis or ulcers) [see Contraindications (4), Adverse Reactions (6.1), Information for Patients (17)].

Esophageal adverse experiences, such as esophagitis, esophageal ulcers and esophageal erosions, occasionally with bleeding and rarely followed by esophageal stricture or perforation, have been reported in patients receiving treatment with oral bisphosphonates. In some cases, these have been severe and required hospitalization. Physicians should therefore be alert to any signs or symptoms signaling a possible esophageal reaction and patients should be instructed to discontinue risedronate sodium delayed-release tablets and seek medical attention if they develop dysphagia, odynophagia, retrosternal pain or new or worsening heartburn.

The risk of severe esophageal adverse experiences appears to be greater in patients who lie down after taking oral bisphosphonates and/or who fail to swallow it with the recommended 4 ounces of water, and/or who continue to take oral bisphosphonates after developing symptoms suggestive of esophageal irritation. Therefore, it is very important that the full dosing instructions are provided to, and understood by, the patient [see Dosage and Administration (2)]. In patients who cannot comply with dosing instructions due to mental disability, therapy with risedronate sodium delayed-release tablets should be used under appropriate supervision.

There have been post-marketing reports of gastric and duodenal ulcers with oral bisphosphonate use, some severe and with complications, although no increased risk was observed in controlled clinical trials.

5.3 Mineral Metabolism

Hypocalcemia has been reported in patients taking risedronate sodium delayed-release tablets. Treat hypocalcemia and other disturbances of bone and mineral metabolism should be effectively treated before starting risedronate sodium delayed-release tablets therapy. Instruct patients to take supplemental calcium and vitamin D if their dietary intake is inadequate. Adequate intake of calcium and vitamin D is important in all patients [see Contraindications (4), Adverse Reactions (6.1), Information for Patients (17)].

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