section name header

Pronunciation

ris-ED-roe-nate

Classifications

Therapeutic Classification: bone resorption inhibitors

Pharmacologic Classification: biphosphonates

Indications

REMS


Action

  • Inhibits bone resorption by binding to bone hydroxyapatite, which inhibits osteoclast activity.
Therapeutic effects:
  • Reversal of the progression of osteoporosis with decreased fractures and other sequelae.
  • Reduced bone turnover and resorption; normalization of serum alkaline phosphatase with reduced complications of Paget’s disease.

Pharmacokinetics

Absorption: Rapidly but poorly absorbed following oral administration (0.63% bioavailability).

Distribution: 60% of absorbed dose distributes to bone.

Metabolism/Excretion: 40% of absorbed dose is excreted unchanged by kidneys; unabsorbed drug is excreted in feces.

Half-Life: Initial: 1.5 hr; terminal: 220 hr (reflects dissociation from bone).

Time/Action Profile

(effects on serum alkaline phosphatase)

ROUTEONSETPEAKDURATION
POwithin days30 daysup to 16 mo



Contraind./Precautions

Contraindicated in:

Use Cautiously in:

Adv. Reactions/Side Effects

CV: chest pain, edema

Derm: rash, STEVENS-JOHNSON SYNDROME, TOXIC EPIDERMAL NECROLYSIS

EENT: amblyopia, conjunctivitis, dry eyes, eye pain/inflammation, tinnitus

GI: abdominal pain, diarrhea, belching, colitis, constipation, dysphagia, esophageal cancer, esophageal ulcer, esophagitis, gastric ulcer, nausea

MS: arthralgia, musculoskeletal pain, femur fractures, osteonecrosis (primarily of jaw)

Neuro: weakness

Resp: asthma exacerbation

Misc: flu-like syndrome

Interactions

Drug-drug:

Route/Dosage

Prevention and Treatment of Postmenopausal Osteoporosis

Prevention and Treatment of Glucocorticoid-Induced Osteoporosis

Treatment of Osteoporosis in Men

Treatment of Paget's Disease

Availability

(Generic available)

Assessment

Lab Test Considerations:

Implementation

Patient/Family Teaching

Evaluation/Desired Outcomes

US Brand Names

Actonel, Atelvia

Canadian Brand Names

Actonel DR

Code

NDC Code