7 DRUG INTERACTIONS
SEP Question 2 asks, “Were you able to insert your penis into the partner's vagina?” SEP Question 3 asks, “Did your erection last long enough for you to have successful intercourse?” The overall percentage of successful attempts to insert the penis into the vagina (SEP2) and to maintain the erection for successful intercourse (SEP3) is derived for each patient.Results in ED Population in US Trials — The 2 primary US efficacy and safety trials included a total of 402 men with erectile dysfunction, with a mean age of 59 years (range 27 to 87 years).
Companies anticipate providing over-the-counter (OTC) product to treat erectile dysfunction after expiration of certain patents
In dogs, an increased incidence of disseminated arteritis was observed in 1- and 6-month studies at unbound tadalafil exposure of 1- to 54-fold above the human exposure (AUC) at the MRHD of 20 mg. In a 12-month dog study, no disseminated arteritis was observed, but 2 dogs exhibited marked decreases in white blood cells (neutrophils) and moderate decreases in platelets with inflammatory signs at unbound tadalafil exposures of approximately 14- to 18-fold the human exposure at the MRHD of 20 mg. The abnormal blood-cell findings were reversible within 2 weeks after stopping treatment. Carcinogenesis — Tadalafil was not carcinogenic to rats or mice when administered daily for 2 years at doses up to 400 mg/kg/day. Systemic drug exposures, as measured by AUC of unbound tadalafil, were approximately 10-fold for mice, and 14- and 26-fold for male and female rats, respectively, the exposures in human males given Maximum Recommended Human Dose (MRHD) of 20 mg.
Will Cialis help me keep an erection after ejaculating?
Mutagenesis — Tadalafil was not mutagenic in the in vitro bacterial Ames cialis 5 price assays or the forward mutation test in mouse lymphoma cells. Impairment of Fertility — There were no effects on fertility, reproductive performance or reproductive organ morphology in male or female rats given oral doses of tadalafil up to 400 mg/kg/day, a dose producing AUCs for unbound tadalafil of 14-fold for males or 26-fold for females the exposures observed in human males given the MRHD of 20 mg. Systemic exposure (based on AUC) at no-observed-adverse-effect-level (NOAEL) (10 mg/kg/day) for unbound tadalafil was similar to that expected in humans at the MRHD of 20 mg. There were no treatment-related testicular findings in rats or mice treated with doses up to 400 mg/kg/day for 2 years. Animal studies showed vascular inflammation in tadalafil-treated mice, rats, and dogs. The population was 78% White, 14% Black, 7% Hispanic, and 1% of other ethnicities, and included patients with ED of various severities, etiologies (organic, psychogenic, mixed), and with multiple co-morbid conditions, including diabetes mellitus, hypertension, and other cardiovascular disease. Most (>90%) patients reported ED of at least 1-year duration.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Cialis Professional | 40mg | 90 + 2 Pills | 348.59€ 331.99€ | |
| Cialis Professional | 20mg | 360 + 6 Pills | 807.03€ 768.60€ | |
| Cialis Generic | 20mg | 10 Pills | 31.49€ 29.99€ | |
| Cialis Generic | 20mg | 360 + 10 Pills | 427.34€ 406.99€ | |
| Cialis Generic | 10mg | 30 + 4 Pills | 63.32€ 60.30€ | |
| Cialis Professional | 20mg | 30 Pills | 104.57€ 99.59€ | |
| Cialis Generic | 5mg | 180 + 10 Pills | 159.65€ 152.05€ | |
| Cialis Generic | 40mg | 30 + 4 Pills | 74.97€ 71.40€ | |
| Cialis Professional | 20mg | 10 Pills | 48.29€ 45.99€ | |
| Cialis Generic | 60mg | 360 + 10 Pills | 570.52€ 543.35€ | |
| Cialis Generic | 5mg | 360 + 10 Pills | 268.08€ 255.31€ | |
| Cialis Generic | 2.5mg | 10 Pills | 28.51€ 27.15€ | |
| Cialis Super Active | 20mg | 270 + 30 Pills | 661.49€ 629.99€ |
Study A was conducted primarily in academic centers.
Further information
In this study, the mean increase in heart rate associated with a 100-mg dose of tadalafil compared to placebo was 3.1 beats per minute. Over a dose range of 2.5 to 20 mg, tadalafil exposure (AUC) increases proportionally with dose in healthy subjects. Mean tadalafil concentrations measured after the administration of a single oral dose of 20 mg and single and once daily multiple doses of 5 mg, from a separate study, (see Figure 4) to healthy male subjects are depicted in Figure 4. Figure 4: Plasma tadalafil concentrations (mean ± SD) following a single 20-mg tadalafil dose and single and once daily multiple doses of 5 mg Absorption — After single oral-dose administration, the maximum observed plasma concentration (Cmax) of tadalafil is achieved between 30 minutes and 6 hours (median time of 2 hours). Absolute bioavailability of tadalafil following oral dosing has not been determined.
Taking Cialis with food
The rate and extent of absorption of tadalafil are not influenced by food; thus CIALIS may be taken with or without food. Distribution — The mean apparent volume of distribution following oral administration is approximately 63 L, indicating that tadalafil is distributed into tissues. At therapeutic concentrations, 94% of tadalafil in plasma is bound to proteins. Less than 0.0005% of the administered dose appeared in the semen of healthy subjects. Metabolism — Tadalafil is predominantly metabolized by CYP3A4 to a catechol metabolite. Study B was conducted primarily in community-based urology practices.
14.4 CIALIS 5 mg for Once Daily Use for ED and BPH
14 CLINICAL STUDIES 14.1 CIALIS for Use as Needed for EDThe efficacy and safety of tadalafil in the treatment of erectile dysfunction has been evaluated in 22 clinical trials of up to 24-weeks duration, involving over 4000 patients. CIALIS, when taken as needed up to once per day, was shown to be effective in improving erectile function in men with erectile dysfunction (ED).CIALIS was studied in the general ED population in 7 randomized, multicenter, double-blinded, placebo-controlled, parallel-arm design, primary efficacy and safety studies of 12-weeks duration. Two of these studies were conducted in the United States and 5 were conducted in centers outside the US. Additional efficacy and safety studies were performed in ED patients with diabetes mellitus and in patients who developed ED status post bilateral nerve-sparing radical prostatectomy.In these 7 trials, CIALIS was taken as needed, at doses ranging from 2.5 to 20 mg, up to once per day. Patients were free to choose the time interval between dose administration and the time of sexual attempts.
Alternatives for ED and BPH
Food and alcohol intake were not restricted.Several assessment tools were used to evaluate the effect of CIALIS on erectile function. The 3 primary outcome measures were the Erectile Function (EF) domain of the International Index of Erectile Function (IIEF) and Questions 2 and 3 from Sexual Encounter Profile (SEP). The IIEF is a 4-week recall questionnaire that was administered at the end of a treatment-free baseline period and subsequently at follow-up visits after randomization. The IIEF EF domain has a 30-point total score, where higher scores reflect better erectile function. SEP is a diary in which patients recorded each sexual attempt made throughout the study. In each of these 2 trials, CIALIS 20 mg showed clinically meaningful and statistically significant improvements in all 3 primary efficacy variables (see Table 11).
| Aspect | Details | Notes |
|---|---|---|
| Average Price | $30-$50 per box of 30 tablets | Varies by pharmacy and region |
| Prescription Needed | Yes | Requires doctor consultation |
| Availability | Widely available online and in pharmacies | Check for official licensing |
| Generic Versions | Available in some regions as Tadalafil generic | May be cheaper |
The treatment effect of CIALIS did not diminish over time.Results in General ED Population in Trials Outside the US — The 5 primary efficacy and safety studies conducted in the general ED population outside the US included 1112 patients, with a mean age of 59 years (range 21 to 82 years).
- Cialis 5 mg's active ingredient, tadalafil, has a half-life of about 17.5 hours.
- The drug's long half-life allows spontaneity in sexual activity.
- Cialis 5 mg is also used for pulmonary arterial hypertension under different dosing.
- Always follow the specific dosing and usage advice given by your doctor.
The population was 76% White, 1% Black, 3% Hispanic, and 20% of other ethnicities, and included patients with ED of various severities, etiologies (organic, psychogenic, mixed), and with multiple co-morbid conditions, including diabetes mellitus, hypertension, and other cardiovascular disease.
- Cialis 5 mg does not cure erectile dysfunction but manages its symptoms.
- The medication is often preferred for its long-lasting effects.
- Dosing may be adjusted based on individual response and tolerance.
- Use Cialis 5 mg exactly as recommended for safety and effectiveness.
Most (90%) patients reported ED of at least 1-year duration.
5.14 Consideration of Other Urological Conditions Prior to Initiating Treatment for BPH
In vitro data suggests that metabolites are not expected to be pharmacologically active at observed metabolite concentrations. Excretion — The mean oral clearance for tadalafil is 2.5 L/hr and the mean terminal half-life is 17.5 hours in healthy subjects. Tadalafil is excreted predominantly as metabolites, mainly in the feces (approximately 61% of the dose) and to a lesser extent in the urine (approximately 36% of the dose). Geriatric — Healthy male elderly subjects (65 years or over) had a lower oral clearance of tadalafil, resulting in 25% higher exposure (AUC) with no effect on Cmax relative to that observed in healthy subjects 19 to 45 years of age. 13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of FertilityCarcinogenesis — Tadalafil was not carcinogenic to rats or mice when administered daily for 2 years at doses up to 400 mg/kg/day.
1. They Look Different
Systemic drug exposures, as measured by AUC of unbound tadalafil, were approximately 10-fold for mice, and 14- and 26-fold for male and female rats, respectively, the exposures in human males given Maximum Recommended Human Dose (MRHD) of 20 mg.Mutagenesis — Tadalafil was not mutagenic in the in vitro bacterial Ames assays or the forward mutation test in mouse lymphoma cells. Tadalafil was not clastogenic in the in vitro chromosomal aberration test in human lymphocytes or the in vivo rat micronucleus assays.Impairment of Fertility — There were no effects on fertility, reproductive performance or reproductive organ morphology in male or female rats given oral doses of tadalafil up to 400 mg/kg/day, a dose producing AUCs for unbound tadalafil of 14-fold for males or 26-fold for females the exposures observed in human males given the MRHD of 20 mg. In beagle dogs given tadalafil daily for 3 to 12 months, there was treatment-related non-reversible degeneration and atrophy of the seminiferous tubular epithelium in the testes in 20-100% of the dogs that resulted in a decrease in spermatogenesis in 40-75% of the dogs at doses of ≥10 mg/kg/day. Systemic exposure (based on AUC) at no-observed-adverse-effect-level (NOAEL) (10 mg/kg/day) for unbound tadalafil was similar to that expected in humans at the MRHD of 20 mg.There were no treatment-related testicular findings in rats or mice treated with doses up to 400 mg/kg/day for 2 years.13.2 Animal Toxicology and/or PharmacologyAnimal studies showed vascular inflammation in tadalafil-treated mice, rats, and dogs. In mice and rats, lymphoid necrosis and hemorrhage were seen in the spleen, thymus, and mesenteric lymph nodes at unbound tadalafil exposure of 2- to 33-fold above the human exposure (AUCs) at the MRHD of 20 mg. In these 5 trials, CIALIS 5, 10, and 20 mg showed clinically meaningful and statistically significant improvements in all 3 primary efficacy variables (see Tables 12, 13 and 14).
| Medication | Active Ingredient | Starting Dose | Typical Dose | Duration | Food Interaction |
|---|---|---|---|---|---|
| Cialis | Tadalafil | 5 mg | Up to 20 mg | 36 hours | Can be taken with or without food |
| Viagra | Sildenafil | 50 mg | 25-100 mg | 4-6 hours | Takes 30-60 min, limit high-fat meals |
| Levitra | Vardenafil | 10 mg | 5-20 mg | 4-5 hours | Best on an empty stomach |
The treatment effect of CIALIS did not diminish over time.In addition, there were improvements in EF domain scores, success rates based upon SEP Questions 2 and 3, and patient-reported improvement in erections across patients with ED of all degrees of disease severity while taking CIALIS, compared to patients on placebo.Therefore, in all 7 primary efficacy and safety studies, CIALIS showed statistically significant improvement in patients' ability to achieve an erection sufficient for vaginal penetration and to maintain the erection long enough for successful intercourse, as measured by the IIEF questionnaire and by SEP diaries.Efficacy Results in ED Patients with Diabetes Mellitus — CIALIS was shown to be effective in treating ED in patients with diabetes mellitus.
- Daily Cialis 5 mg can be combined with other treatments for ED.
- For example, penile injections or vacuum devices may still be used.
- Do not combine with other oral PDE5 inhibitors.
- Talk to doctor about multimodal therapy options.
- Psychological counseling may enhance outcomes.
- Lifestyle changes (exercise, weight loss) improve response.
- Smoking cessation and reduced alcohol intake are beneficial.
- Healthy diet supports erectile function.