I have to take 10mg or 20mg of cialis. all I could find in pharmacies was 5mg. can I take 2 5mg pills instead of one

The following groups of patients with cardiovascular disease were not included in clinical safety and efficacy trials for CIALIS, and therefore until further information is available, CIALIS is not recommended for the following groups of patients: myocardial infarction within the last 90 days unstable angina or angina occurring during sexual intercourse New York Heart Association Class 2 or greater heart failure in the last 6 months uncontrolled arrhythmias, hypotension (<90/50 mm Hg), or uncontrolled hypertension (>170/100 mm Hg) As with other PDE5 inhibitors, tadalafil has mild systemic vasodilatory properties that may result in transient decreases in blood pressure. Patients with severely impaired autonomic control of blood pressure may be particularly sensitive to the actions of vasodilators, including PDE5 inhibitors.

Physicians should be aware that CIALIS for once daily use provides continuous plasma tadalafil levels and should consider this when evaluating the potential for interactions with medications (e.g., nitrates, alpha-blockers, anti-hypertensives and potent inhibitors of CYP3A4) and with substantial consumption of alcohol [see Drug Interactions (7.1), (7.2), (7.3)]. There have been rare reports of prolonged erections greater than 4 hours and priapism (painful erections greater than 6 hours in duration) for this class of compounds. Patients who have an erection lasting greater than 4 hours, whether painful or not, should seek emergency medical attention. CIALIS should be used with caution in patients who have conditions that might predispose them to priapism (such as sickle cell anemia, multiple myeloma, or leukemia), or in patients with anatomical deformation of the penis (such as angulation, cavernosal fibrosis, or Peyronie's disease).

• Tadalafil 10mg daily maintains an average steady-state concentration.
• Tadalafil 20mg as-needed leads to intermittent high concentrations.
• Both doses are effective for men with diabetes-related ED.
• 20mg should be used with caution in men over 65 years old.
• 10mg daily may be a suitable long-term management strategy.
• Sexual stimulation is still required for medication to work.
• Both strengths can cause mild, temporary color vision changes.
• Discontinue use and seek help for sudden hearing loss.

Physicians should advise patients to stop use of all PDE5 inhibitors, including CIALIS, and seek medical attention in the event of a sudden loss of vision in one or both eyes. Physicians should also discuss with patients the increased risk of NAION in individuals who have already experienced NAION in one eye, including whether such individuals could be adversely affected by use of vasodilators such as PDE5 inhibitors [see Adverse Reactions (6.2)]. Patients with known hereditary degenerative retinal disorders, including retinitis pigmentosa, were not included in the clinical trials, and use in these patients is not recommended. Physicians should advise patients to stop taking PDE5 inhibitors, including CIALIS, and seek prompt medical attention in the event of sudden decrease or loss of hearing. It is not possible to determine whether these events are related directly to the use of PDE5 inhibitors or to other factors [see Adverse Reactions (6.1) and (6.2)]. Physicians should discuss with patients the potential for CIALIS to augment the blood-pressure-lowering effect of alpha blockers and antihypertensive medications [see Drug Interactions (7.1) and Clinical Pharmacology (12.2)]. Caution is advised when PDE5 cialis no perscription inhibitors are coadministered with alpha blockers. Consideration should be given to the following: Patients should be stable on alpha-blocker therapy prior to initiating a PDE5 inhibitor. Patients who demonstrate hemodynamic instability on alpha-blocker therapy alone are at increased risk of symptomatic hypotension with concomitant use of PDE5 inhibitors. In those patients who are stable on alpha-blocker therapy, PDE5 inhibitors should be initiated at the lowest recommended dose. In those patients already taking an optimized dose of PDE5 inhibitor, alpha-blocker therapy should be initiated at the lowest dose. Stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure when taking a PDE5 inhibitor. Safety of combined use of PDE5 inhibitors and alpha blockers may be affected by other variables, including intravascular volume depletion and other antihypertensive drugs. [See Dosage and Administration (2.4) and Drug Interactions (7.1)].

1.1 Erectile Dysfunction

The following groups of patients with cardiovascular disease were not included in clinical safety and efficacy trials for CIALIS, and therefore until further information is available, CIALIS is not recommended for the following groups of patients: myocardial infarction within the last 90 days unstable angina or angina occurring during sexual intercourse New York Heart Association Class 2 or greater heart failure in the last 6 months uncontrolled arrhythmias, hypotension (<90/50 mm Hg), or uncontrolled hypertension (>170/100 mm Hg) As with other PDE5 inhibitors, tadalafil has mild systemic vasodilatory properties that may result in transient decreases in blood pressure. Patients with severely impaired autonomic control of blood pressure may be particularly sensitive to the actions of vasodilators, including PDE5 inhibitors. Physicians should be aware that CIALIS for once daily use provides continuous plasma tadalafil levels and should consider this when evaluating the potential for interactions with medications (e.g., nitrates, alpha-blockers, anti-hypertensives and potent inhibitors of CYP3A4) and with substantial consumption of alcohol [see Drug Interactions (7.1), (7.2), (7.3)]. There have been rare reports of prolonged erections greater than 4 hours and priapism (painful erections greater than 6 hours in duration) for this class of compounds. Patients who have an erection lasting greater than 4 hours, whether painful or not, should seek emergency medical attention.

How Long Does It Take For Results?

CIALIS should be used with caution in patients who have conditions that might predispose them to priapism (such as sickle cell anemia, multiple myeloma, or leukemia), or in patients with anatomical deformation of the penis (such as angulation, cavernosal fibrosis, or Peyronie's disease). Physicians should advise patients to stop use of all PDE5 inhibitors, including CIALIS, and seek medical attention in the event of a sudden loss of vision in one or both eyes. Physicians should also discuss with patients the increased risk of NAION in individuals who have already experienced NAION in one eye, including whether such individuals could be adversely affected by use of vasodilators such as PDE5 inhibitors [see Adverse Reactions (6.2)]. Patients with known hereditary degenerative retinal disorders, including retinitis pigmentosa, were not included in the clinical trials, and use in these patients is not recommended. Physicians should advise patients to stop taking PDE5 inhibitors, including CIALIS, and seek prompt medical attention in the event of sudden decrease or loss of hearing.

Daily dosing

It is not possible to determine whether these events are related directly to the use of PDE5 inhibitors or to other factors [see Adverse Reactions (6.1) and (6.2)]. Physicians should discuss with patients the potential for CIALIS to augment the blood-pressure-lowering effect of alpha blockers and antihypertensive medications [see Drug Interactions (7.1) and Clinical Pharmacology (12.2)]. Caution is advised when PDE5 cialis no perscription inhibitors are coadministered with alpha blockers. Consideration should be given to the following: Patients should be stable on alpha-blocker therapy prior to initiating a PDE5 inhibitor. Patients who demonstrate hemodynamic instability on alpha-blocker therapy alone are at increased risk of symptomatic hypotension with concomitant use of PDE5 inhibitors. CIALIS should be limited to 5 mg not more than once in every 72 hours in patients with severe renal insufficiency or end-stage renal disease on hemodialysis. No dose adjustment is required in patients with mild renal insufficiency [see Use in Specific Populations (8.7)]. Due to increased tadalafil exposure (AUC), limited clinical experience, and the lack of ability to influence clearance by dialysis, CIALIS for once daily use is not recommended in patients with severe renal insufficiency. No dose adjustment is required in patients with mild or moderate renal insufficiency [see Use in Specific Populations (8.7)]. In patients with mild or moderate hepatic impairment, the dose of CIALIS should not exceed 10 mg. Because of insufficient information in patients with severe hepatic impairment, use of CIALIS in this group is not recommended [see Use In Specific Populations (8.6)]. CIALIS for once daily use has not been extensively evaluated in patients with mild or moderate hepatic insufficiency.

Because of insufficient information in patients with severe hepatic impairment, use of CIALIS in this group is not recommended [see Use In Specific Populations (8.6)]. Patients should be made aware that both alcohol and CIALIS, a PDE5 inhibitor, act as mild vasodilators. Therefore, physicians should inform patients that substantial consumption of alcohol (e.g., 5 units or greater) in combination with CIALIS can increase the potential for orthostatic signs and symptoms, including increase in heart rate, decrease in standing blood pressure, dizziness, and headache [see Dosage and Administration (2.4) and Clinical Pharmacology (12.2)]. CIALIS cialis drug cost is metabolized predominantly by CYP3A4 in the liver. In patients taking potent inhibitors of CYP3A4 and CIALIS for once daily use, the dose of CIALIS should not exceed 2.5 mg [see Dosage and Administration (2.4)].

• Cialis 10 mg offers a lower-cost option for some users.
• Cialis 20 mg provides a more potent effect for challenging ED.
• Always follow medical advice for choosing between doses.
• The medication enhances blood flow to the penis.
• Timing of the dose is flexible, but 30 minutes pre-activity is typical.
• Avoid grapefruit or grapefruit juice when taking Cialis.
• Cialis’s effect duration makes it convenient for spontaneous activity.
• Regular use can improve confidence and quality of life.
• Dosing adjustments should be made gradually and safely.
• Safety is paramount—report side effects to your doctor immediately.

The safety and efficacy of combinations of CIALIS and other PDE5 inhibitors or treatments for erectile dysfunction have not been studied. Therefore, the use of such combinations is not recommended.

Studies in vitro have demonstrated that tadalafil is a selective inhibitor of PDE5. Although CIALIS has not been shown to increase bleeding times in healthy subjects, use in patients with bleeding disorders or significant active peptic ulceration should be based upon a careful risk-benefit assessment and caution.

17.6 Vision

The use of CIALIS offers no protection against sexually transmitted diseases. 6 ADVERSE REACTIONS 6.1 Clinical Studies ExperienceBecause clinical trials are conducted under widely varying conditions, 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.Tadalafil was administered to over 6550 men during clinical trials worldwide. In trials of CIALIS for once daily use, a total of 716, 389, and 115 were treated for at least 6 months, 1 year, and 2 years, respectively. For CIALIS for use as needed, over 1300 and 1000 subjects were treated for at least 6 months and 1 year, respectively.CIALIS for Use as NeededIn eight primary placebo-controlled Phase 3 studies of 12 weeks duration, mean age was 59 years (range 22 to 88) and the discontinuation rate due to adverse events in patients treated with tadalafil 10 or 20 mg was 3.1%, compared to 1.4% in placebo treated patients.When taken as recommended in the placebo-controlled clinical trials, the following adverse events were reported (see Table 1) for CIALIS for use as needed:CIALIS for Once Daily UseIn three placebo-controlled Phase 3 clinical trials of 12 or 24 weeks duration, mean age was 58 years (range 21 to 82) and the discontinuation rate due to adverse events in patients treated with tadalafil was 4.1%, compared to 2.8% in placebo-treated patients.The following adverse events were reported (see Table 2) in clinical trials of 12 weeks duration:The following adverse events were reported (see Table 3) over 24 weeks treatment duration in one placebo-controlled Phase 3 clinical study:Back pain or myalgia was reported at incidence rates described in Tables 1 and 2.

How to Choose a Dose

In those patients who are stable on alpha-blocker therapy, PDE5 inhibitors should be initiated at the lowest recommended dose. In those patients already taking an optimized dose of PDE5 inhibitor, alpha-blocker therapy should be initiated at the lowest dose. Stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure when taking a PDE5 inhibitor. Safety of combined use of PDE5 inhibitors and alpha blockers may be affected by other variables, including intravascular volume depletion and other antihypertensive drugs. [See Dosage and Administration (2.4) and Drug Interactions (7.1)].

Cons of Cialis

CIALIS should be limited to 5 mg not more than once in every 72 hours in patients with severe renal insufficiency or end-stage renal disease on hemodialysis. No dose adjustment is required in patients with mild renal insufficiency [see Use in Specific Populations (8.7)]. Due to increased tadalafil exposure (AUC), limited clinical experience, and the lack of ability to influence clearance by dialysis, CIALIS for once daily use is not recommended in patients with severe renal insufficiency. No dose adjustment is required in patients with mild or moderate renal insufficiency [see Use in Specific Populations (8.7)]. In patients with mild or moderate hepatic impairment, the dose of CIALIS should not exceed 10 mg.

Take as directed

Because of insufficient information in patients with severe hepatic impairment, use of CIALIS in this group is not recommended [see Use In Specific Populations (8.6)]. CIALIS for once daily use has not been extensively evaluated in patients with mild or moderate hepatic insufficiency. Because of insufficient information in patients with severe hepatic impairment, use of CIALIS in this group is not recommended [see Use In Specific Populations (8.6)]. Patients should be made aware that both alcohol and CIALIS, a PDE5 inhibitor, act as mild vasodilators. Therefore, physicians should inform patients that substantial consumption of alcohol (e.g., 5 units or greater) in combination with CIALIS can increase the potential for orthostatic signs and symptoms, including increase in heart rate, decrease in standing blood pressure, dizziness, and headache [see Dosage and Administration (2.4) and Clinical Pharmacology (12.2)]. In tadalafil clinical pharmacology trials, back pain or myalgia generally occurred 12 to 24 hours after dosing and typically resolved within 48 hours.

17.7 Sudden Hearing Loss

The back pain/myalgia associated with tadalafil treatment was characterized by diffuse bilateral lower lumbar, gluteal, thigh, or thoracolumbar muscular discomfort and was exacerbated by recumbancy. In general, pain was reported as mild or moderate in severity and resolved without medical treatment, but severe back pain was reported with a low frequency (<5% of all reports). When medical treatment was necessary, acetaminophen or non-steroidal anti-inflammatory drugs were generally effective; however, in a small percentage of subjects who required treatment, a mild narcotic (e.g., codeine) was used. Overall, approximately 0.5% of all subjects treated with CIALIS for on demand use discontinued treatment as a consequence of back pain/myalgia. In the 1-year open label extension study, back pain and myalgia were reported in 5.5% and 1.3% of patients, respectively. Diagnostic testing, including measures for inflammation, muscle injury, or renal damage revealed no evidence of medically significant underlying pathology.

Adverse effects

In the 1-year open label extension study, back pain and myalgia were reported in 5.5% and 1.3% of patients, respectively. Diagnostic testing, including measures for inflammation, muscle injury, or renal damage revealed no evidence of medically significant underlying pathology. Incidence rates for CIALIS for once daily use are described in Table 2. In studies of CIALIS for once daily use, events of back pain and myalgia were generally mild or moderate with a discontinuation rate of 0.3%.Across all studies with any CIALIS dose, reports of changes in color vision were rare (<0.1% of patients).The following section identifies additional, less frequent events (<2%) reported in controlled clinical trials of CIALIS for once daily use or use as needed. A causal relationship of these events to CIALIS is uncertain.

CIALIS for Once Daily Use for Erectile Dysfunction

Excluded from this list are those events that were minor, those with no plausible relation to drug use, and reports too imprecise to be meaningful:Body as a whole — asthenia, face edema, fatigue, painCardiovascular — angina pectoris, chest pain, hypotension, myocardial infarction, postural hypotension, palpitations, syncope, tachycardiaDigestive — abnormal liver function tests, dry mouth, dysphagia, esophagitis, gastritis, GGTP increased, loose stools, nausea, upper abdominal pain, vomitingMusculoskeletal — arthralgia, neck painNervous — dizziness, hypesthesia, insomnia, paresthesia, somnolence, vertigoRespiratory — dyspnea, epistaxis, pharyngitisSkin and Appendages — pruritus, rash, sweatingOphthalmologic — blurred vision, changes in color vision, conjunctivitis (including conjunctival hyperemia), eye pain, lacrimation increase, swelling of eyelidsOtologic — sudden decrease or loss of hearing, tinnitusUrogenital — erection increased, spontaneous penile erection6.2 Postmarketing ExperienceThe following adverse reactions have been identified during post approval use of CIALIS.

As-Needed Dosage

Incidence rates for CIALIS for once daily use are described in Table 2.

In studies of CIALIS for once daily use, events of back pain and myalgia were generally mild or moderate with a discontinuation rate of 0.3%.Across all studies with any CIALIS dose, reports of changes in color vision were rare (<0.1% of patients).The following section identifies additional, less frequent events (<2%) reported in controlled clinical trials of CIALIS for once daily use or use as needed.

Further information

CIALIS cialis drug cost is metabolized predominantly by CYP3A4 in the liver. In patients taking potent inhibitors of CYP3A4 and CIALIS for once daily use, the dose of CIALIS should not exceed 2.5 mg [see Dosage and Administration (2.4)]. The safety and efficacy of combinations of CIALIS and other PDE5 inhibitors or treatments for erectile dysfunction have not been studied. Therefore, the use of such combinations is not recommended. Studies in vitro have demonstrated that tadalafil is a selective inhibitor of PDE5.

Does tadalafil interact with foods or drinks?

Although CIALIS has not been shown to increase bleeding times in healthy subjects, use in patients with bleeding disorders or significant active peptic ulceration should be based upon a careful risk-benefit assessment and caution. The use of CIALIS offers no protection against sexually transmitted diseases. 6 ADVERSE REACTIONS 6.1 Clinical Studies ExperienceBecause clinical trials are conducted under widely varying conditions, 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.Tadalafil was administered to over 6550 men during clinical trials worldwide. In trials of CIALIS for once daily use, a total of 716, 389, and 115 were treated for at least 6 months, 1 year, and 2 years, respectively. For CIALIS for use as needed, over 1300 and 1000 subjects were treated for at least 6 months and 1 year, respectively.CIALIS for Use as NeededIn eight primary placebo-controlled Phase 3 studies of 12 weeks duration, mean age was 59 years (range 22 to 88) and the discontinuation rate due to adverse events in patients treated with tadalafil 10 or 20 mg was 3.1%, compared to 1.4% in placebo treated patients.When taken as recommended in the placebo-controlled clinical trials, the following adverse events were reported (see Table 1) for CIALIS for use as needed:CIALIS for Once Daily UseIn three placebo-controlled Phase 3 clinical trials of 12 or 24 weeks duration, mean age was 58 years (range 21 to 82) and the discontinuation rate due to adverse events in patients treated with tadalafil was 4.1%, compared to 2.8% in placebo-treated patients.The following adverse events were reported (see Table 2) in clinical trials of 12 weeks duration:The following adverse events were reported (see Table 3) over 24 weeks treatment duration in one placebo-controlled Phase 3 clinical study:Back pain or myalgia was reported at incidence rates described in Tables 1 and 2.

How does Cialis work for Erectile Dysfunction (ED)?

In tadalafil clinical pharmacology trials, back pain or myalgia generally occurred 12 to 24 hours after dosing and typically resolved within 48 hours. The back pain/myalgia associated with tadalafil treatment was characterized by diffuse bilateral lower lumbar, gluteal, thigh, or thoracolumbar muscular discomfort and was exacerbated by recumbancy. In general, pain was reported as mild or moderate in severity and resolved without medical treatment, but severe back pain was reported with a low frequency (<5% of all reports). When medical treatment was necessary, acetaminophen or non-steroidal anti-inflammatory drugs were generally effective; however, in a small percentage of subjects who required treatment, a mild narcotic (e.g., codeine) was used. Overall, approximately 0.5% of all subjects treated with CIALIS for on demand use discontinued treatment as a consequence of back pain/myalgia. A causal relationship of these events to CIALIS is uncertain. Excluded from this list are those events that were minor, those with no plausible relation to drug use, and reports too imprecise to be meaningful:Body as a whole — asthenia, face edema, fatigue, painCardiovascular — angina pectoris, chest pain, hypotension, myocardial infarction, postural hypotension, palpitations, syncope, tachycardiaDigestive — abnormal liver function tests, dry mouth, dysphagia, esophagitis, gastritis, GGTP increased, loose stools, nausea, upper abdominal pain, vomitingMusculoskeletal — arthralgia, neck painNervous — dizziness, hypesthesia, insomnia, paresthesia, somnolence, vertigoRespiratory — dyspnea, epistaxis, pharyngitisSkin and Appendages — pruritus, rash, sweatingOphthalmologic — blurred vision, changes in color vision, conjunctivitis (including conjunctival hyperemia), eye pain, lacrimation increase, swelling of eyelidsOtologic — sudden decrease or loss of hearing, tinnitusUrogenital — erection increased, spontaneous penile erection6.2 Postmarketing ExperienceThe following adverse reactions have been identified during post approval use of CIALIS.