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Clinical Trials Experience
Because clinical trials are conducted under widely varying conditions, the adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
ALTACE has been evaluated for safety in over 4000 patients with hypertension; of these, 1230 patients were studied in U.S. controlled trials, and 1107 were studied in foreign controlled trials. Almost 700 of these patients were treated for at least one year. The overall incidence of reported adverse events was similar in ALTACE and placebo patients. The most frequent clinical side effects (possibly or probably related to study drug) reported by patients receiving ALTACE in placebo-controlled trials were: headache (5.4%), dizziness (2.2%), and fatigue or asthenia (2.0%), but only the last one was more common in ALTACE patients than in patients given placebo. Generally the side effects were mild and transient, and there was no relation to total dosage within the range of 1.25 mg–20 mg. Discontinuation of therapy because of a side effect was required in approximately 3% of U.S. patients treated with ALTACE. The most common reasons for discontinuation were: cough (1.0%), dizziness (0.5%), and impotence (0.4%). Of observed side effects considered possibly or probably related to study drug that occurred in U.S. placebo-controlled trials in more than 1% of patients treated with ALTACE, only asthenia (fatigue) was more common on ALTACE than placebo (2% [n=13/651] vs. 1% [n=2/286], respectively).
In placebo-controlled trials, there was also an excess of upper respiratory infection and flu syndrome in the ALTACE group, not attributed at that time to ramipril. As these studies were carried out before the relationship of cough to ACE inhibitors was recognized, some of these events may represent ramipril-induced cough. In a later 1-year study, increased cough was seen in almost 12% of ALTACE patients, with about 4% of patients requiring discontinuation of treatment.
Safety data in the Heart Outcomes Prevention Evaluation (HOPE) study were collected as reasons for discontinuation or temporary interruption of treatment. The incidence of cough was similar to that seen in the Acute Infarction Ramipril Efficacy (AIRE) trial. The rate of angioedema was the same as in previous clinical trials [see WARNINGS AND PRECAUTIONS].
Table 1:Reasons for
Discontinuation or Temporary Interruption of Treatment—HOPE Study
|Discontinuation at any time||32%||34%|
|Reasons for stopping|
|Hypotension or dizziness||1.5%||1.9%|
Heart Failure Post-Myocardial Infarction
Adverse reactions (except laboratory abnormalities) considered possibly/probably related to study drug that occurred in more than 1% of patients and more frequently on ALTACE are shown below. The incidences are from the AIRE study. The follow-up time was between 6 and 46 months for this study.
Table 2: Percentage of
Patients with Adverse Events Possibly/ Probably Related to Study
Drug—Placebo-Controlled (AIRE) Mortality Study
|Abnormal kidney function||0.5%||1%|
Other Adverse Reactions
Other adverse reactions reported in controlled clinical trials (in less than 1% of ALTACE patients), or rarer events seen in post-marketing experience, include the following (in some, a causal relationship to drug is uncertain):
Body as a whole: Anaphylactoid reactions [see WARNINGS AND PRECAUTIONS ].
Decreases in hemoglobin or hematocrit (a low value and a decrease of 5 g/dL or 5%, respectively) were rare, occurring in 0.4% of patients receiving ALTACE alone and in 1.5% of patients receiving ALTACE plus a diuretic.
Renal: Acute renal failure. Some hypertensive patients with no apparent pre-existing renal disease have developed minor, usually transient, increases in blood urea nitrogen and serum creatinine when taking ALTACE, particularly when ALTACE was given concomitantly with a diuretic [see WARNINGS AND PRECAUTIONS].
Angioneurotic edema: Angioneurotic edema has been reported in 0.3% of patients in U.S. clinical trials of ALTACE [see WARNINGS AND PRECAUTIONS ].
Gastrointestinal: Hepatic failure, hepatitis, jaundice, pancreatitis, abdominal pain (sometimes with enzyme changes suggesting pancreatitis), anorexia, constipation, diarrhea, dry mouth, dyspepsia, dysphagia, gastroenteritis, increased salivation, and taste disturbance.
Dermatologic: Apparent hypersensitivity reactions (manifested by urticaria, pruritus, or rash, with or without fever), photosensitivity, purpura, onycholysis, pemphigus, pemphigoid, erythema multiforme, toxic epidermal necrolysis, and Stevens-Johnson syndrome.
Neurologic and Psychiatric: Anxiety, amnesia, convulsions, depression, hearing loss, insomnia, nervousness, neuralgia, neuropathy, paresthesia, somnolence, tinnitus, tremor, vertigo, and vision disturbances.
Miscellaneous:As with other ACE inhibitors, a symptom complex has been reported which may include a positive ANA, an elevated erythrocyte sedimentation rate, arthralgia/arthritis, myalgia, fever, vasculitis, eosinophilia, photosensitivity, rash and other dermatologic manifestations. Additionally, as with other ACE inhibitors, eosinophilic pneumonitis has been reported.
In addition to adverse reactions reported from clinical trials, there have been rare reports of hypoglycemia reported during ALTACE therapy when given to patients concomitantly taking oral hypoglycemic agents or insulin. The causal relationship is unknown.
Clinical Laboratory Test Findings
Creatinine and Blood Urea Nitrogen
Increases in creatinine levels occurred in 1.2% of patients receiving ALTACE alone, and in 1.5% of patients receiving ALTACE and a diuretic. Increases in blood urea nitrogen levels occurred in 0.5% of patients receiving ALTACE alone and in 3% of patients receiving ALTACE with a diuretic. None of these increases required discontinuation of treatment. Increases in these laboratory values are more likely to occur in patients with renal insufficiency or those pretreated with a diuretic and, based on experience with other ACE inhibitors, would be expected to be especially likely in patients with renal artery stenosis [see WARNINGS AND PRECAUTIONS]. As ramipril decreases aldosterone secretion, elevation of serum potassium can occur. Use potassium supplements and potassium sparing diuretics with caution, and monitor the patient's serum potassium frequently [see WARNINGS AND PRECAUTIONS].
Hemoglobin and Hematocrit
Decreases in hemoglobin or hematocrit (a low value and a decrease of 5 g/dL or 5%, respectively) were rare, occurring in 0.4% of patients receiving ALTACE alone and in 1.5% of patients receiving ALTACE plus a diuretic. No US patients discontinued treatment because of decreases in hemoglobin or hematocrit.
Other (Causal Relationships Unknown)
Clinically important changes in standard laboratory tests were rarely associated with ALTACE administration. Elevations of liver enzymes, serum bilirubin, uric acid, and blood glucose have been reported, as have cases of hyponatremia and scattered incidents of leucopenia, eosinophilia, and proteinuria. In US trials, less than 0.2% of patients discontinued treatment for laboratory abnormalities; all of these were cases of proteinuria or abnormal liver-function tests.
Read the Altace (ramipril tablets) Side Effects Center for a complete guide to possible side effects
Patients on diuretics, especially those in whom diuretic therapy was recently instituted, may occasionally experience an excessive reduction of blood pressure after initiation of therapy with ALTACE. The possibility of hypotensive effects with ALTACE can be minimized by either decreasing or discontinuing the diuretic or increasing the salt intake prior to initiation of treatment with ALTACE. If this is not possible, reduce the starting dose [see DOSAGE AND ADMINISTRATION].
Agents Increasing Serum Potassium
Coadministration of ALTACE with other drugs that raise serum potassium levels may result in hyperkalemia. Monitor serum potassium in such patients.
Other Agents Affecting RAS
Increased serum lithium levels and symptoms of lithium toxicity have been reported in patients receiving ACE inhibitors during therapy with lithium; therefore, frequent monitoring of serum lithium levels is recommended. If a diuretic is also used, the risk of lithium toxicity may be increased.
Nitritoid reactions (symptoms include facial flushing, nausea, vomiting and hypotension) have been reported rarely in patients on therapy with injectable gold (sodium aurothiomalate) and concomitant ACE inhibitor therapy including ALTACE.
Non-Steroidal Anti-Inflammatory Agents Including Selective Cyclooxygenase-2 Inhibitors (COX-2 Inhibitors)
In patients who are elderly, volume-depleted (including those on diuretic therapy), or with compromised renal function, co-administration of NSAIDs, including selective COX-2 inhibitors, with ACE inhibitors, including ramipril, may result in deterioration of renal function, including possible acute renal failure. These effects are usually reversible. Monitor renal function periodically in patients receiving ramipril and NSAID therapy.
The antihypertensive effect of ACE inhibitors, including ramipril, may be attenuated by NSAIDs.
Patients taking concomitant mTOR inhibitor (e.g. temsirolimus) therapy may be at increased risk for angioedema. [see WARNINGS AND PRECAUTIONS]
Read the Altace Drug Interactions Center for a complete guide to possible interactions
Last reviewed on RxList: 9/25/2015
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