Current osteoporosis treatment guidelines recommend medication for anyone who has had a hip or spine fragility fracture, has a bone density T-score of -2.5 or lower, or has low bone mass with a high calculated fracture risk. For most people, first-line treatment is a bisphosphonate, together with enough calcium, vitamin D, exercise, and fall prevention. People at very high risk may start with a bone-building (anabolic) drug instead. Treatment is reviewed every few years rather than continued automatically forever.
In my practice, osteoporosis is often found only after a broken bone. This overview explains who qualifies for treatment, which drugs are used, and how long to take them, following the broad consensus shared by major international guidelines.
Who Should Be Treated?
Osteoporosis weakens bones by upsetting the balance between bone breakdown (resorption) and bone formation. It usually causes no symptoms until a fracture, a loss of height, or a stooped posture appears. Guidelines therefore focus on estimating fracture risk rather than waiting for symptoms.
Diagnosis relies on a DXA scan (dual-energy X-ray absorptiometry) of the hip and spine. The T-score compares your bone density with a healthy young adult’s.
| Category | T-score | Usual guideline approach |
|---|---|---|
| Normal | -1.0 or above | Lifestyle measures; reassess based on risk factors |
| Low bone mass (osteopenia) | Between -1.0 and -2.5 | Treat if fracture risk is high (for example, by FRAX score) |
| Osteoporosis | -2.5 or below | Medication recommended |
| Severe osteoporosis | -2.5 or below plus one or more fragility fractures | Medication recommended; consider anabolic therapy first |
A hip or vertebral fragility fracture justifies treatment on its own, whatever the T-score. For people with osteopenia, the FRAX tool estimates the 10-year probability of fracture. In the United States, commonly used treatment thresholds are a 10-year hip fracture risk of 3% or more, or a major osteoporotic fracture risk of 20% or more. Other countries use their own thresholds.
Foundations: Calcium, Vitamin D, Exercise, and Falls
Every guideline starts with the basics, which support whichever drug is used:
- Calcium: about 1,000 to 1,200 mg a day for older adults, ideally mostly from food, with supplements only to make up the shortfall.
- Vitamin D: typically 800 to 1,000 IU a day for older adults, with higher doses only if a blood test shows deficiency.
- Exercise: weight-bearing activity, resistance training, and balance work such as tai chi.
- Lifestyle: stop smoking, limit alcohol, and maintain a healthy body weight.
- Fall prevention: review sedating medicines, check eyesight, and remove tripping hazards at home.
Before starting medication, doctors also look for secondary causes such as vitamin D deficiency, overactive parathyroid or thyroid glands, celiac disease, long-term steroid use, and multiple myeloma.
Medications Recommended by Guidelines
Antiresorptive Drugs (Slow Bone Loss)
- Bisphosphonates: alendronate or risedronate as weekly tablets, or zoledronic acid as a yearly infusion. They are first-line for most patients and reduce spine and hip fractures.
- Denosumab: an injection every six months. It is useful when bisphosphonates aren’t suitable, including in some patients with reduced kidney function. It must not be stopped without planning follow-on treatment, because bone loss rebounds and spine fractures can occur.
- Raloxifene: a daily tablet for postmenopausal women that mainly protects the spine. It raises the risk of blood clots.
- Menopausal hormone therapy: can protect bone in younger postmenopausal women who also need symptom relief.
Anabolic Drugs (Build New Bone)
- Teriparatide and abaloparatide: daily self-injections, usually for up to two years.
- Romosozumab: monthly injections for 12 months. It is generally avoided in people with a recent heart attack or stroke.
Guidelines increasingly recommend starting with an anabolic drug in patients at very high risk, such as those with recent or multiple fractures or very low T-scores. The gains from an anabolic drug are then locked in by switching to an antiresorptive.
How Long to Treat and How to Monitor
Bisphosphonates remain in bone for years. That allows a drug holiday for lower-risk patients after about five years of oral treatment or three years of yearly infusions. Higher-risk patients often continue longer. Denosumab is different: it is not suitable for a holiday and needs a planned transition.
A repeat DXA scan is usually done one to two years after starting or changing treatment, then less often once results are stable. Serious side effects are rare but include osteonecrosis of the jaw and atypical femur fractures. A dental check before starting and reporting any new thigh or groin pain help catch these early. For a look at newer approaches, see our article on screening for osteoporosis and future directions.
Complications and Pain Management
Untreated osteoporosis leads to fractures that can cause chronic pain, loss of independence, and a higher risk of death, particularly after hip fracture. A first fracture also sharply raises the chance of another in the following years. That is why guidelines stress treating people promptly after a fracture, often through dedicated fracture liaison services.
Pain after vertebral fractures is managed with pain relief, physiotherapy, and sometimes bracing. More detail is in our guide to osteoporosis treatment for pain. For the complete picture, visit our osteoporosis guide.
When to See a Doctor
- You have broken a bone from a fall at standing height or less
- You notice height loss of more than about 4 cm (1.5 inches), or a curving upper back
- You are a woman aged 65 or older, or a postmenopausal woman with risk factors, and have never had a DXA scan
- You take long-term steroids, aromatase inhibitors, or other bone-thinning medicines
- You develop sudden back pain, or new thigh pain while on treatment
Frequently Asked Questions
What is the first-line treatment for osteoporosis?
For most people it is an oral bisphosphonate such as alendronate or risedronate, along with calcium, vitamin D, and exercise. Zoledronic acid or denosumab are alternatives when tablets aren’t suitable. Very high-risk patients may start with an anabolic drug.
Do I need to take osteoporosis medication for life?
Not necessarily. Guidelines recommend reassessing after about three to five years of bisphosphonates, and lower-risk patients can often take a break. Denosumab is the exception, as it should not be stopped without a follow-on plan.
Is osteopenia treated with medication?
Only if your overall fracture risk is high, usually judged with FRAX along with your history. Many people with osteopenia need lifestyle measures and monitoring rather than drugs.
Can men follow the same osteoporosis treatment guidelines?
Yes. Men are diagnosed and treated using largely the same principles and many of the same medications. Doctors also look carefully for secondary causes, such as low testosterone or alcohol use.
