Bisphosphonate·Endocrinology - Thyroid & Bone

Risedronate

Postmenopausal and male osteoporosis, glucocorticoid-induced osteoporosis, Paget's disease

Authority requiredPBSBISPHOSPHONATEActonel, Actonel EC35 mg EC tablet+2

No source link confirmed for this record yet. Its own source notes are under Additional.

At a glance

Max Dose

150 mg/month

Half-life

10 YEARS

Caution: Esophagitis

HIGH RISK

Food Safe

EC TABLET ONLY

Cautions

Avoid / Cautions

Inability to stand/sit upright for 30 minutes. Esophageal stricture. Hypocalcemia. Pregnancy Category B3. Incorporates into bone and leaches out during future pregnancies.

Where it stands

Rapid Summary

Overview

Potent oral bisphosphonate for osteoporosis. Highly similar to Alendronate. Incorporates permanently into bone to halt osteoclast destruction.

Clinical Focus

Standard tablets must be taken fasting and upright. However, the unique 'Enteric Coated' (EC) formulation MUST be taken WITH food.

Bottom Line

Risedronate is an oral bisphosphonate for osteoporosis with weekly or monthly dosing, but requires the same strict upright fasting administration as alendronate to prevent oesophageal injury.

Formulation & Access

Brand Names

Actonel, Actonel EC

Oral Routes

Standard Tablets (35 mg, 150 mg). Enteric-Coated (EC) Tablets (35 mg).

Prescribing & PBS

Authority Required (PBS).

Indications & Use

Primary

PBSTGA

Postmenopausal and male osteoporosis, glucocorticoid-induced osteoporosis, Paget's disease.

Clinical Place

First-line oral option. The EC formulation drastically improves compliance for patients who cannot tolerate the strict fasting rules of Alendronate.

Quick reference

Class & Role

Bisphosphonate — Potent oral bisphosphonate for osteoporosis.

Route / Formulation

Standard Tablets (35 mg, 150 mg). Enteric-Coated (EC) Tablets (35 mg). (Actonel, Actonel EC)

Usual Dose & Max

PO 35 mg ONCE WEEKLY. Must be taken 30 mins before breakfast, upright, with a full glass of tap water. Max 150 mg ONCE MONTHLY or 35 mg ONCE WEEKLY.

Key Indication Doses

Osteoporosis (Standard Tablet): PO 35 mg ONCE WEEKLY. Must be taken 30 mins before breakfast, upright, with a full glass of tap water. Osteoporosis (EC Tablet): PO 35 mg ONCE WEEKLY. MUST be taken WITH or immediately after breakfast (requires food to trigger delayed release in the bowel). Renal Impairment: Avoid entirely if eGFR < 30.

Best Uses

Risedronate is an oral bisphosphonate for osteoporosis with weekly or monthly dosing, but requires the same strict upright fasting administration as alendronate to prevent oesophageal injury.

Key Risks

Gastrointestinal: Severe erosive esophagitis, esophageal ulcers (with standard tablets). Musculoskeletal: Osteonecrosis of the jaw (ONJ), atypical femoral fractures (with use > 5 years). Metabolic: Hypocalcemia (transient).

Key Interactions

Calcium supplements, antacids, dairy. Forms an indestructible physical complex in the gut, dropping absorption to zero. Separate by 2 hours.

Monitoring

Double-check the box! Is it standard Actonel (must be empty stomach) or Actonel EC (must be taken with food)? Mixing this up guarantees clinical failure or esophageal burns. Dental check-up required prior to initiation due to ONJ risk.

Clinical Pearl

Many elderly patients quit bisphosphonates because they hate waiting 30 minutes to eat breakfast or drink coffee. Switching them to Actonel EC (Enteric Coated) completely solves this, as it is designed to bypass the stomach and only release in the alkaline small intestine.

Access

Authority requiredActonel, Actonel EC35 mg EC tablet

Brand: Actonel, Actonel EC
PBS status: Authority required
Formulation: Standard Tablets (35 mg, 150 mg). Enteric-Coated (EC) Tablets (35 mg).

From this page

No calculator, monitoring schedule or factsheet is linked to this medicine page yet.

Bisphosphonate·Endocrinology - Thyroid & Bone

Risedronate

Postmenopausal and male osteoporosis, glucocorticoid-induced osteoporosis, Paget's disease

Authority requiredPBSBISPHOSPHONATEActonel, Actonel EC35 mg EC tablet+2

No source link confirmed for this record yet. Its own source notes are under Additional.

At a glance

Max Dose

150 mg/month

Half-life

10 YEARS

Caution: Esophagitis

HIGH RISK

Food Safe

EC TABLET ONLY

Cautions

Avoid / Cautions

Inability to stand/sit upright for 30 minutes. Esophageal stricture. Hypocalcemia. Pregnancy Category B3. Incorporates into bone and leaches out during future pregnancies.

Where it stands

Rapid Summary

Overview

Potent oral bisphosphonate for osteoporosis. Highly similar to Alendronate. Incorporates permanently into bone to halt osteoclast destruction.

Clinical Focus

Standard tablets must be taken fasting and upright. However, the unique 'Enteric Coated' (EC) formulation MUST be taken WITH food.

Bottom Line

Risedronate is an oral bisphosphonate for osteoporosis with weekly or monthly dosing, but requires the same strict upright fasting administration as alendronate to prevent oesophageal injury.

Formulation & Access

Brand Names

Actonel, Actonel EC

Oral Routes

Standard Tablets (35 mg, 150 mg). Enteric-Coated (EC) Tablets (35 mg).

Prescribing & PBS

Authority Required (PBS).

Indications & Use

Primary

PBSTGA

Postmenopausal and male osteoporosis, glucocorticoid-induced osteoporosis, Paget's disease.

Clinical Place

First-line oral option. The EC formulation drastically improves compliance for patients who cannot tolerate the strict fasting rules of Alendronate.

Quick reference

Class & Role

Bisphosphonate — Potent oral bisphosphonate for osteoporosis.

Route / Formulation

Standard Tablets (35 mg, 150 mg). Enteric-Coated (EC) Tablets (35 mg). (Actonel, Actonel EC)

Usual Dose & Max

PO 35 mg ONCE WEEKLY. Must be taken 30 mins before breakfast, upright, with a full glass of tap water. Max 150 mg ONCE MONTHLY or 35 mg ONCE WEEKLY.

Key Indication Doses

Best Uses

Risedronate is an oral bisphosphonate for osteoporosis with weekly or monthly dosing, but requires the same strict upright fasting administration as alendronate to prevent oesophageal injury.

Key Risks

Key Interactions

Calcium supplements, antacids, dairy. Forms an indestructible physical complex in the gut, dropping absorption to zero. Separate by 2 hours.

Monitoring

Clinical Pearl

Access

Authority requiredActonel, Actonel EC35 mg EC tablet

Brand: Actonel, Actonel EC
PBS status: Authority required
Formulation: Standard Tablets (35 mg, 150 mg). Enteric-Coated (EC) Tablets (35 mg).

From this page

No calculator, monitoring schedule or factsheet is linked to this medicine page yet.