Evenity Drug Interactions: What to Avoid and What to Tell Your Doctor

Before starting Evenity (romosozumab), it's essential to give your healthcare provider a complete list of all medications, supplements, and herbal products you take. While Evenity doesn't have an extensive list of traditional pharmacokinetic drug interactions (where one drug affects the blood levels of another), it does have important interactions and combination risks that patients need to know about.

The Most Important Interaction: Osteonecrosis of the Jaw (ONJ) Risk with Certain Medications

The most clinically significant drug interaction concern with Evenity is the elevated risk of osteonecrosis of the jaw (ONJ) when combined with certain medication classes. ONJ is a serious condition where jawbone tissue loses blood supply and dies. While rare on Evenity alone, the risk increases substantially when combined with:

Bisphosphonates (alendronate/Fosamax, zoledronic acid/Reclast, ibandronate/Boniva, risedronate/Actonel): Concurrent use of bisphosphonates significantly elevates ONJ risk. Providers should avoid combining these medications with Evenity.

Denosumab (Prolia): Concurrent use elevates ONJ risk. Denosumab is commonly prescribed AFTER Evenity (as a sequencing strategy), but should not be used simultaneously.

Corticosteroids (prednisone, methylprednisolone, dexamethasone): Chronic corticosteroid use increases ONJ risk. Tell your doctor if you take steroids for conditions like asthma, rheumatoid arthritis, lupus, or inflammatory bowel disease.

Chemotherapy agents: Many cancer chemotherapy drugs increase ONJ risk. If you are receiving cancer treatment, discuss this with both your oncologist and the prescribing provider before starting Evenity.

Angiogenesis inhibitors (bevacizumab/Avastin, sunitinib/Sutent, sorafenib/Nexavar): These targeted cancer therapies affect blood vessel formation and significantly elevate ONJ risk when combined with bone-targeted therapies.

Cardiovascular Medications: Important Considerations

Evenity carries a boxed warning for increased cardiovascular risk (heart attack, stroke, cardiovascular death). While there are no specific drug-drug interactions that directly increase this cardiovascular risk further, you must inform your doctor about:

All cardiovascular medications you take (statins, beta-blockers, ACE inhibitors, anticoagulants)

Any antiplatelet drugs (aspirin, clopidogrel/Plavix) which may mask cardiovascular symptoms

Your complete cardiovascular history so your doctor can properly assess the benefit-risk of Evenity for you

Calcium and Vitamin D: Required Supplementation During Evenity

Evenity can lower blood calcium levels (hypocalcemia). Your doctor will require you to take calcium and vitamin D supplements during the 12-month treatment course. The specific doses depend on your dietary intake and baseline levels — follow your prescriber's specific recommendations. Adequate calcium and vitamin D supplementation is not optional; it's a safety requirement.

Medications That Can Affect Calcium Levels

Since Evenity can lower calcium, be especially careful about other medications that also lower calcium, including:

Loop diuretics (furosemide/Lasix) — increase urinary calcium excretion

Proton pump inhibitors (omeprazole, pantoprazole) — can reduce calcium absorption from diet

Anti-epileptic drugs (phenytoin, carbamazepine) — can affect vitamin D metabolism and calcium absorption

No Major Pharmacokinetic Drug-Drug Interactions Identified

The FDA prescribing information notes that no clinically significant pharmacokinetic differences in romosozumab exposure were observed based on age (20-89 years), sex, race, disease state, prior bisphosphonate exposure, or renal impairment including end-stage renal disease requiring dialysis. There are no documented interactions where another drug changes the blood levels of Evenity in a clinically meaningful way (or vice versa).

What to Tell Every Doctor and Dentist

Tell every healthcare provider you see that you are on Evenity, including:

Your dentist — especially before any tooth extractions, implants, or other oral surgery. ONJ risk in dental procedures is a key concern.

Your cardiologist — given the cardiovascular boxed warning.

Any specialist who prescribes cancer, rheumatology, or inflammatory disease medications.

For a full overview of Evenity's side effect profile, see our guide on Evenity side effects.