The most serious adverse reactions (HP) in patients receiving the Zometa® product according to the recorded indications were: anaphylactic reaction, undesirable eyes, osteonecrosis of the lower jaw, atypical femur fracture, atrial fibrillation, renal dysfunction, acute phase reaction and hypocalcemia . The information on the incidence of undesired reactions (HP) when using Zometa® in a dose of 4 mg is mainly based on data obtained during long-term therapy. Undesirable reactions associated with the use of Zometa®, usually mild and transient; are similar to those reported in the use of other bisphosphonates.These HP can be observed in about a third of patients receiving Zometa®. Symptoms of acute phase reactions usually developed 3 days after the application of Zometa®: general malaise, bone pain, fever, chills, flu-like syndrome and arthritis followed by swelling of the joints; usually the symptoms were resolved within a few days. Also, such HP as arthralgia and myalgia were often noted. Very often, a decrease in renal calcium excretion was accompanied by a sharp decrease in the phosphorus content, which was asymptomatic and did not require treatment. The frequent decrease in serum calcium in the presence of hypocalcaemia was accompanied by a lack of clinical manifestations.
There are reports of reactions from the gastrointestinal tract, such as nausea and vomiting, after intravenous infusion of the Zometa® preparation.
Local reactions at the site of infusion, such as redness or swelling and / or pain, were infrequent.
Anorexia was often observed in patients who received the drug Zometa® at a dose of 4 mg. Cases of rash or itching were rare. As with other bisphosphonates, there are frequent cases of conjunctivitis.
Based on a summary analysis of controlled trials, the occurrence of severe severe anemia (hemoglobin <8.0 g / dL) in 5.2% of patients receiving a 4 mg dose of Zometa compared with 4.2% receiving placebo was reported.
Undesirable reactions are listed below for organs and systems, indicating the frequency of their occurrence. Frequency criteria: very often (≥1 / 10), often (≥1 / 100, <1/10), infrequently (≥1 / 1000, <1/100), rarely - (≥1 / 10000 <1/1000) , very rarely (<1/10000), including individual messages.
Violations from the blood and lymphatic system: often - anemia, infrequently - thrombocytopenia, leukopenia; rarely - pancytopenia.
Disorders of the psyche: often - sleep disturbance; infrequent feeling of anxiety; rarely confusion.
Impaired nervous system: often - headache, paresthesia; infrequently - dizziness, dysgeusia, hypoesthesia, hyperesthesia, tremor; very rarely - convulsions, hypesthesia and tetany (developing due to hypocalcemia).
Disorders from the side of the organ of vision: often - conjunctivitis; infrequently blurred vision; rarely - uveitis. Disorders from the digestive system: often - nausea, vomiting, decreased appetite, constipation; infrequently - diarrhea, abdominal pain, dyspepsia, stomatitis, dry mouth.
Disturbances from the respiratory system, chest and mediastinal organs: infrequently - shortness of breath, cough; rarely - interstitial lung disease.
Disturbances from the skin and subcutaneous tissues: often - increased sweating; infrequently - itching, rash (including erythematous and macular).
Disturbances from the musculoskeletal system and connective tissue: often - pain in the bones, myalgia, arthralgia, generalized pain, joint stiffness; infrequently - necrosis of the lower jaw, muscle cramps.
Heart Disease: rarely - bradycardia, arrhythmia (developing due to hypocalcemia).
Vascular disorders: often - increased blood pressure; infrequently - lowering blood pressure.
Disorders from the kidneys and urinary tract: often - impaired renal function; infrequently - acute renal failure, hematuria, proteinuria. Disorders from the immune system: infrequently - reactions of increased sensitivity; rarely angioedema.
Laboratory and instrumental data: very often - hypophosphatemia; often - increased serum creatinine and urea concentrations, hypocalcemia; infrequently - hypomagnesemia, hypokalemia; rarely - hyperkalemia, hypernatremia.
General disorders and disorders at the site of administration: often - acute phase reaction, fever, flu-like syndrome (including general malaise, chills, sickness, fever), peripheral edema, asthenia; infrequently - the reaction at the injection site (pain, irritation, swelling, tightness, redness), chest pain, weight gain; rarely arthritis and swelling of the joints as a symptom of the reaction of the acute phase.
It should be borne in mind that when using other bisphosphonates in patients with bronchial asthma sensitive to acetylsalicylic acid, there have been cases of bronchospasm, but no application of Zometa® has been observed.
Atrial fibrillation
In one clinical trial with zoledronic acid for 3 years in patients with postmenopausal osteoporosis (at a dose of 5 mg once a year), the overall incidence of atrial fibrillation was 2.5% (96 persons out of 3862) compared with 1.9% (75 of 3852) in the placebo group. The incidence of atrial fibrillation accompanied by severe hemodynamic disturbances was 1.3% (51 of 3862) and 0.6% (22 of 3852) for zoledronic acid and placebo, respectively.The reason for the increase in the incidence of atrial fibrillation with zoledronic acid therapy in patients with postmenopausal osteoporosis has not been established.
In clinical studies using zoledronic acid (at a dose of 4 mg every 3-4 weeks) in patients with oncological diseases, an increase in the frequency of atrial fibrillation was not observed.
In the treatment of patients with bisphosphonates, including the Zometa® preparation, there were occasional cases of osteonecrosis of the jaw (usually after extraction of the tooth or other dental intervention).
Undesirable reactions according to spontaneous reports and literary reports (frequency unknown):
Impaired immune system: anaphylactic reaction / shock.
Disturbances from the nervous system: drowsiness.
Disorders from the side of the organ of vision: episcleritis, scleritis and inflammatory diseases of the orbit.
Heart disorders: atrial fibrillation.
Violations from the vessels: a decrease in blood pressure, leading to fainting or circulatory collapse, mainly in patients with risk factors.
Disturbances from the respiratory system, chest and mediastinal organs: bronchospasm.
Disturbances from the skin and subcutaneous tissues: urticaria.
Violations by skeletnomyshechnoy and connective tissue disorders: sudden pronounced limited mobility of the joints and / or severe and sometimes disabling pain in the bones, joints and / or muscles, atypical subtrochanteric and diaphyseal femoral fractures.
Acute phase reaction
This unwanted reaction is a complex of symptoms: fever, general weakness, bone pain, chills, flu-like syndrome. Usually begins in the interval <3 days after the infusion of the Zometa® preparation. The reaction is also referred to using the terms "influenza-like" or "postdose" symptoms. Symptoms usually resolve after a few days.
If any of the side effects listed in the manual are aggravated, or if you notice any other side effects not listed in the instructions, tell your doctor.