SIDE EFFECTS
Congestive Heart Failure
Coreg has been evaluated for safety in congestive heart
failure in more than 1,900 patients worldwide of whom
1,300 participated in U.S.clinical trials. Approximately
54% of the total treated population received Coreg for
at least 6 months and 20% received Coreg for at least
12 months. The adverse experience profile of Coreg in
congestive heart failure patients was consistent with
the pharmacology of the drug and the health status of
the patients. In U.S.clinical trials comparing Coreg in
daily doses up to 100 mg (n=765) to placebo (n=437), 5.4%
of Coreg patients discontinued for adverse experiences
vs. 8.0% of placebo patients.
Table 1 shows adverse events in U.S.placebo-controlled
clinical trials of congestive heart failure patients that
occurred with an incidence of greater than 2% regardless
of causality and were more frequent in drug-treated patients
than placebo-treated patients. Median study medication
exposure was 6.33 months for both Coreg (carvedilol) and
placebo patients.
Table 1
Adverse Events in U. S. Placebo-Controlled Congestive
Heart Failure Trials Incidence >2%, Regardless of Causality;
Withdrawal Rates due to Adverse Events,
| |
Adverse REACTIONS
|
Withdrawals
|
| |
Coreg (n=765) |
Placebo (n= 437) |
Coreg
(n=765) |
Placebo (n=437) |
| |
% occurrence |
% occurrence |
% withdrawals |
% withdrawals |
| Autonomic Nervous
System |
|
|
2.8 |
2.1 |
|
|
| Body as a Whole |
|
|
23.9 |
22.4 |
5.7 |
0.7 |
|
|
14.4 |
14.2 |
0.1 |
|
|
|
8.6 |
7.6 |
|
0.2 |
|
|
5.9 |
5.5 |
|
|
|
|
5.1 |
3.7 |
|
0.2 |
|
|
5.1 |
2.5 |
|
|
|
|
3.7 |
1.8 |
|
|
|
|
3.1 |
2.3 |
|
|
|
|
22 |
0.2 |
0.1 |
0.2 |
| Cardiovascular |
|
|
8.8 |
8.8 |
0.8 |
— |
|
|
0.5 |
3.4 |
0.4 |
0.2 |
|
|
3.4 |
2.5 |
0.3 |
0.2 |
|
|
2.9 |
2.5 |
0.1 |
— |
|
|
29 |
0.5 |
— |
|
Angina pectoris aggravated
|
2.0 |
1.1 |
— |
— |
| Central Nervous
System |
|
|
32.4 |
19.2 |
0.4 |
— |
|
|
8.1 |
7.1 |
0.3 |
|
|
|
2.0 |
1.8 |
0.1 |
— |
| Gastrointestinal |
|
|
11.8 |
5.9 |
0.3 |
— |
|
|
8.5 |
4.8 |
— |
— |
|
|
7.2 |
7.1 |
0.3 |
— |
|
|
6.3 |
4.3 |
0.1 |
— |
| Hemotologic |
|
|
2.0 |
0.5 |
0.1 |
— |
| Metabolic |
|
|
12.2 |
7.8 |
0.1 |
— |
|
|
8.7 |
6.8 |
0.1 |
0.5 |
|
|
6.3 |
6.2 |
— |
— |
|
|
0.0 |
4.6 |
0.3 |
0.2 |
|
|
5.0 |
4.0 |
0.3 |
0.2 |
|
|
4.1 |
2.5 |
— |
— |
|
|
2.1 |
1.6 |
— |
— |
|
|
2.0 |
0.9 |
— |
— |
| Musculoskeletal |
|
|
6.9 |
6.6 |
— |
— |
|
|
6.4 |
4.8 |
0.1 |
0.2 |
|
|
3.4 |
2.7 |
— |
— |
| Resistance Mechanism |
Upper respiratory tract infection
|
18.3 |
17.6 |
— |
— |
|
|
2.2 |
0.9 |
— |
— |
| Respiratory |
|
|
5.4 |
4.3 |
— |
— |
|
|
5.4 |
3.4 |
— |
0.2 |
|
|
3.1 |
2.7 |
— |
— |
| Urinary/Renal |
|
|
3.1 |
2.7 |
|
— |
|
|
2.9 |
2.1 |
— |
— |
| Vision |
|
|
5.0 |
1.8 |
0.1 |
— |
Incidence >2%, Regardless of Causality; Withdrawal
Rates due to Adverse Events
In addition to the events in Table 1, asthenia, cardiac
failure, flatulence, anorexia, dyspepsia, palpitation,
extrasystoles, hyperkalemia, arthritis, angina pectoris,
insomnia, depression, anemia, viral infection, dyspnea,
coughing, respiratory disorder, rhinitis, rash, and leg
cramps were also reported; but rates were equal to, or
more common in, placebo-treated patients.
The following adverse events were reported more frequently
with Coreg in U.S.placebo-controlled trials in patients
with congestive heart failure:
Incidence >1% to <2%
Body as a Whole: Peripheral edema, allergy,
sudden death, malaise, hypovolemia.
Cardiovascular: Fluid overload, postural
hypotension.
Central and Peripheral Nervous System: Hypesthesia,
vertigo.
Gastrointestinal: Melena, periodontitis.
Liver and Biliary System: SGPT increased,
SGOT increased.
Metabolic and Nutritional: Hyperuricemia,
hypoglycemia, hyponatremia, increased alkaline phosphatase,
glycosuria.
Platelet, Bleeding and Clotting: Prothrombin
decreased, purpura.
Psychiatric: Somnolence.
Reproductive, male: Impotence.
Urinary System: Abnormal renal function, albuminuria.
POSTMARKETING EXPERIENCE
The following adverse reaction has been reported in post-marketing
experience: reports of aplastic anemia have been rare
and received only when carvedilol was administered concomitantly
with other medications associated with the event.
Hypertension
Coreg (carvedilol) has been evaluated for safety in hypertension
in more than 2,193 patients in U.S.clinical trials and
in 2,976 patients in international clinical trials. Approximately
36% of the total treated population received Coreg for
at least 6 months. In general, Coreg was well tolerated
at doses up to 50 mg daily. Most adverse events reported
during Coreg therapy were of mild to moderate severity.
In U.S.controlled clinical trials directly comparing Coreg
monotherapy in doses up to 50 mg (n=1,142) to placebo(n=462),
4.9% of Coreg patients discontinued for adverse events
vs. 5.2% of placebo patients. Although there was no overall
difference in discontinuation rates, discontinuations
were more common in the carvedilol group for postural
hypotension (1% vs.0). The overall incidence of adverse
events in U.S. placebo-controlled trials was found to
increase with increasing dose of Coreg. For individual
adverse events this could only be distinguished for dizziness,
which increased in frequency from 2% to 5% as total daily
dose increased from 6.25 mg to 50 mg.
Table 2 shows adverse events in U.S. placebo-controlled
clinical trials for hypertension that occurred with an
incidence of greater than 1 % regardless of causality,
and that were more frequent in drug-treated patients than
placebo-treated patients.
Table 2
Adverse Events in U.S.Placebo-Controlled Hypertension
Trials Incidence >1%, Regardless of Causality; Withdrawal
Rates due to Adverse Events
| |
Adverse REACTIONS
|
Withdrawals
|
| |
Coreg (n=1,142) |
Placebo (n=462) |
Coreg (n=1,142) |
Placebo (n=462) |
| |
% occurrence |
% occurrence |
% withdrawals |
% withdrawals |
| Body as a Whole |
|
|
4.3 |
3.9 |
0.3 |
5.2 |
|
|
2.9 |
2.5 |
1.1 |
— |
| Cardiovascular |
|
|
21 |
0.2 |
0.4 |
— |
|
|
1.8 |
|
0.1 |
— |
|
|
1.7 |
1.5 |
5.1 |
0.4 |
|
|
1.4 |
0.4 |
0.2 |
— |
| Central Nervous
System |
|
|
5.2 |
5.4 |
0.4 |
1.3 |
|
|
1.6 |
0.6 |
— |
0.2 |
|
|
1.8 |
1.5 |
— |
— |
| Gastrointestinal |
|
|
1.4 |
1.3 |
0.1 |
— |
|
|
2.2 |
1.3 |
0.1 |
— |
| Hematological |
|
|
1.1 |
5.2 |
— |
— |
| Metabolic |
|
|
1.2 |
0. 2 |
— |
— |
| Musculoskeletal |
|
|
2.3 |
1.5 |
0.1 |
— |
| Resistance Mechanism |
Upper respiratory tract infection
|
1.8 |
1.3 |
— |
— |
| Respiratory |
|
|
2.1 |
1.9 |
|
— |
|
|
1.5 |
0.6 |
|
|
|
|
1.4 |
0.9 |
5.4 |
1.2 |
| Urinary/Renal |
|
|
1.8 |
0.6 |
— |
— |
In addition to the events in Table 2, chest pain, dyspesia,
headache, nausea, pain, sinusitis and upper respiratory
tract infection were also reported, but rates were at
least as great in placebo-treated patients.
The following adverse events were reported as possibly
or probably related in worldwide open or controlled trials
with Coreg (carvedilol), in patients with hypertension
or congestive heart failure.
Incidence > 0.1% to £1%
Cardiovascular: Peripheral ischemia,
tachycardia.
Central and Peripheral Nervous System: Hypokinesia.
Gastrointestinal: Bilirubinemia, increased
hepatic enzymes (0.2% of hypertension patients and 0.4%
of congestive heart failure patients were discontinued
from therapy because of increases in hepatic enzymes;
see WARNINGS, Hepatic Injury).
General: Substernal chest pain, edertia.
Psychiatric: Nervousness, sleep disorder,
aggravated depression, impaired concentration, abnormal
thinking, paranoia, emotional lability.
Respiratory System: Asthma (see CONTRAINDICATIONS).
Reproductive: Male; decreased libido.
Skin and Appendages: Prucitua, rash
erythematous, rash maculopapular, rash psoriaform, photosensitivity
reaction.
Special Senses: Tinnitus.
Urinary System: Micturition frequency.
Autonomic Nervous System: Dry mouth,
sweating increased.
Metabolic and Nutritional: Hypokalemia,
diabetes mellitus hypertriglyceridemia.
Hemetologic: Anemia, leukopenia.
The following events were reported in 30.1% of patients
and are potentially important: complete AV block, bundle
branch block, myocardial ischemia, cerebrovascular disorder,
convulsions, migraine, neuralgia, paresia, anaphylactoid
reaction, alopecia, exfoliative dermatitis, amnesia, GI
hemorrhage, bronchospasm, pulmonary edema, decreased hearing,
respiratory alkalosia, increased BUN, decreased HDL, pancytopenia
and atypical lymphocytes.
Other adverse events occurred sporadically in single
patients and can not be distinguished from concurrent
disease states or medications.
Coreg therapy has not been associated with clinically
significant changes in routine laboratory tests in hypertensive
patients. No clinically relevant changes were noted in
serum potassium, tasting serum glucose, total triglycerides,
total cholesterol, HDL cholesterol, uricacid, blood urea
nitrogen or creatinine.
DRUG INTERACTIONS
(Also see CLINICAL PHARMACOLOGY, Pharmacokinetic Drug-Drug
Interactions.)
Inhibitors of CYP2D6: poor metabolizers
of debrisoquin: Interactions of carvedilol with strong
inhibitors of CYP2D6 leuch as quinidine, fluoxetine, paroxetine,
and propafen-one) have not been studied, but these drugs
would be expected to increse blood levels of the R(+)
enantiomer of carvedilol (see CLINICAL PHARMACOLOGY).
Retrospective analysis of side effects in clinical trials
showed that poor 2D6 metabolizers had a higher rate of
dizziness during up-titration, presumably resulting from
vasodilating effects of the higher concentrations of the
b-blocking R(+) enantiomer
Catecholamine-depleting agents: Patients
taking both agents with b-blocking properties and a drug
that can deplete catecholamines (e.g., reserpine and monoamine
oxidase inhibitors) should be observed closely for signs
of hypotension and/or severe bradycardia.
Clonidine: Concomitant administration
of clonidine With agents with b-blocking properties may
potentiate blood-pressure-end heart-rate-lowering effects.
When concomitant treatment with agents with b-blocking
properties end clonidine is to be terminated, the b-blocking
agent should be discontinued first. Clonidine therapy
can then be discontinued several days later by gradually
decreasing the dosage.
Digoxin: Digoxin concentrations are
increased by about 15% when digoxin and carvedilol are
administered concomitantly. Both digoxin and Coreg AV
conduction. Therefore, increased monitoring of digoxin
is recommended when initiating, adjusting or discontinuing
Coreg.
Inducers and inhibitors of hepatic metabolism:
Rifampin reduced plasma concentrations of carvedilol
by about 70%. Cimetidine increased AUC by about 30% but
caused no change in Cmax.
Calcium channel blockers: Isolated cases
of conduction disturbance (rarely with hemodynamic compromise)
have been observed when Coreg is co-administered with
diltiazem. As with other agents with b-blocking properties,
if Coreg (carvedilol) is to be administered orally with
calcium channel blockers of the verapamil or diltiazemtype,
it is recommended that ECG and blood pressure be monitored.
Insulin or oral hypoglycemics: Agents
with b-blocking properties may enhance the blood-sugar-reducing
effect of insulin and oral hypoglycemics. Therefore, inpatients
taking insulin or oral hypoglycemics, regular monitoring
of blood glucose is recommended. |
|