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Didronel Side Effects

Generic Name: etidronate

Note: This page contains information about the side effects of etidronate. Some of the dosage forms included on this document may not apply to the brand name Didronel.

For the Consumer

Applies to etidronate: oral tablet

In addition to its needed effects, some unwanted effects may be caused by etidronate (the active ingredient contained in Didronel). In the event that any of these side effects do occur, they may require medical attention.

Severity: Major

You should check with your doctor immediately if any of these side effects occur when taking etidronate:

More common:
  • Bone pain or tenderness (increased, continuing, or returning—in patients with Paget's disease)
Less common:
  • Bone fractures, especially of the thigh bone
Rare:
  • Abdominal or stomach pain or burning
  • bloody, black, or tarry stools
  • chest pain
  • chills
  • cough or hoarseness
  • fever
  • general feeling of tiredness or weakness
  • hives
  • lower back or side pain
  • noisy breathing
  • painful or difficult urination
  • pale skin
  • skin rash or itching
  • sore throat
  • sores, ulcers, or white spots on the lips or inside the mouth
  • swelling of the arms, legs, face, lips, tongue, or throat
  • swollen glands
  • tightness in the chest
  • unusual bleeding or bruising
Incidence not known:
  • Blistering, peeling, loosening of the skin
  • bone, joint, or muscle pain that is severe and occasionally disabling
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • difficulty in moving
  • difficulty in swallowing
  • discouragement
  • feeling sad or empty
  • heartburn
  • heavy jaw feeling
  • irritability
  • lack of appetite
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • loosening of a tooth
  • loss of interest or pleasure
  • loss of memory
  • pain or burning in the throat
  • pain, swelling, or numbness in the mouth or jaw
  • problems with memory
  • rash with flat lesions or small raised lesions on the skin
  • red irritated eyes
  • red skin lesions, often with a purple center
  • redness or discoloration of the skin
  • seeing, hearing, or feeling things that are not there
  • trouble concentrating
  • trouble sleeping
  • unusual tiredness or weakness
  • vomiting

If any of the following symptoms of overdose occur while taking etidronate, get emergency help immediately:

Symptoms of overdose:
  • Abdominal or stomach cramps
  • confusion
  • convulsions
  • difficulty in breathing
  • irregular heartbeats
  • mood or mental changes
  • muscle cramps in the hands, arms, feet, legs, or face
  • numbness and tingling around the mouth, fingertips, or feet
  • shortness of breath
  • tremor

Severity: Minor

Some of the side effects that can occur with etidronate may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

More common: - at higher doses
  • Diarrhea
  • nausea
Incidence not known:
  • Burning feeling in the chest or stomach
  • hair loss, thinning of hair
  • headache
  • indigestion
  • leg cramps
  • stomach upset
  • tenderness in the stomach area

For Healthcare Professionals

Applies to etidronate: intravenous solution, oral tablet

Gastrointestinal

Gastrointestinal side effects are more common with higher doses (10 to 20 mg/kg) and may be alleviated by dividing the daily dose.[Ref]

Common (1% to 10%): Diarrhea, nausea
Rare (less than 0.1%): Burning of the tongue
Frequency not reported: Exacerbation of peptic ulcer disease including perforation in a few patients, gastritis
Postmarketing reports: Esophagitis; glossitis, duodenal ulcer[Ref]

Dermatologic

Rare (less than 0.1%): Erythema multiforme, alopecia
Frequency not reported: Angioedema, follicular eruption, macular rash, maculopapular rash, pruritus, Stevens-Johnson syndrome, toxic epidermal necrolysis, urticaria[Ref]

Hypersensitivity

Rare (less than 0.1%): Hypersensitivity reactions, including angioedema, urticaria, rash, pruritus[Ref]

Musculoskeletal

Uncommon (0.1% to 1%): Arthropathies (arthralgia and arthritis)
Rare (less than 0.1%): Atypical subtrochanteric and diaphyseal femoral fractures
Frequency not reported: Osteonecrosis of the jaw (ONJ), leg cramps, increased or recurrent bone pain at pagetic sites and onset of pain at previously asymptomatic sites
Postmarketing reports: Bone fracture, osteomalacia[Ref]

At higher doses the incidence of increased or recurrent bone pain at pagetic sites and/or onset of pain at previously asymptomatic sites rise. When therapy continues, pain resolves in some patients but persists in others.[Ref]

Psychiatric

Rare (less than 0.1%): Confusion
Postmarketing reports: Depression, hallucination[Ref]

Nervous system

Rare (less than 0.1%): Paresthesia, peripheral neuropathy
Frequency not reported: Headache
Postmarketing reports: Neuropsychiatric events including amnesia[Ref]

Respiratory

Rare (less than 0.1%): Exacerbation of asthma[Ref]

Hematologic

Rare (less than 0.1%): Leukopenia, agranulocytosis pancytopenia[Ref]

References

1. Saunders RL, Jr "Appearance of a gastric ulcer during diphosphonate therapy in a woman with CRST syndrome." South Med J 70 (1977): 1327-9

2. Beauchesne MF, Miller PF "Etidronate and alendronate in the treatment of postmenopausal osteoporosis." Ann Pharmacother 33 (1999): 587-99

3. Jaworski RC, Gibson M "Mitral and aortic valve abnormalities in a patient with fibrodysplasia ossificans progressiva." Pathology 15 (1983): 325-8

4. "Product Information. Didronel I.V. Infusion (etidronate)." MGI Pharma Inc, Minnetonka, MN.

5. Lourwood DL "The pharmacology and therapeutic utility of bisphosphonates." Pharmacotherapy 18 (1998): 779-89

6. "Product Information. Didronel Tablets (etidronate)." Procter and Gamble Pharmaceuticals, Cincinnati, OH.

7. vanStaa TP, Leufkens H, Abenhaim L, Cooper C "Postmarketing surveillance of the safety of cyclic etidronate." Pharmacotherapy 18 (1998): 1121-8

8. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

9. Jones PB, McCloskey EV, Kanis JA "Transient taste-loss during treatment with etidronate ." Lancet 2 (1987): 637

10. Evans RA, MacDonald D "Diphosphonates and painful feet." Aust N Z J Med 13 (1983): 175-6

11. Evans RA, Dunstan CR, Hills E, Wong SY "Pathologic fracture due to severe osteomalacia following low-dose diphosphonate treatment of Paget's disease of bone." Aust N Z J Med 13 (1983): 277-9

12. Gallacher SJ, Boyle IT, Capell HA "Pseudogout associated with the use of cyclical etidronate therapy." Scott Med J 36 (1991): 49

13. Mautalen C, Gonzalez D, Blumenfeld EL, Santini Araujo E, Schajowicz F "Spontaneous fractures of uninvolved bones in patients with Paget's disease during unduly prolonged treatment with disodium etidronate (EHDP)." Clin Orthop Jun (1986): 150-5

14. Boyce BF, Smith L, Fogelman I, Johnston E, Ralston S, Boyle IT "Focal osteomalacia due to low-dose diphosphonate therapy in Paget's disease." Lancet 1 (1984): 821-4

Not all side effects for Didronel may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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