Label: SILDENAFIL- sildenafil citrate injection, solution
Erectile dysfunction is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection.
Sildenafil (Viagra®) 100 mg Price Example
makes no representations or warranties, express or implied, including, but not limited to, any implied warranty or merchantability and/or fitness for a particular purpose, with respect to such database and specifically disclaims all such warranties and representations. Users are advised that decisions regarding drug therapy are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and the database if provided for informational purposes only. The entire monograph for a drug should be reviewed for a throrough understanding of the drug's actions, uses and side effects. The American Society of Health-System Pharmacists, Inc. does not endorse or recommend the use of any drug in the database. When a man is sexually stimulated, his body's normal response is to increase blood flow to his penis to produce an erection.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 200mg | 90 + 6 Pills | 170.79€ 162.66€ | |
| Kamagra | 100mg | 60 + 4 Pills | 201.34€ 191.75€ | |
| Viagra Generic | 100mg | 180 + 8 Pills | 199.37€ 189.88€ | |
| Viagra Generic | 150mg | 30 + 2 Pills | 72.32€ 68.88€ | |
| Viagra Generic | 25mg | 120 + 6 Pills | 125.56€ 119.58€ | |
| Kamagra Oral Jelly | 100mg | 63 + 7 Sachets | 224.18€ 213.50€ | |
| Kamagra Polo | 100mg | 12 Pills | 60.21€ 57.34€ | |
| Kamagra | 100mg | 20 Pills | 86.09€ 81.99€ | |
| Kamagra | 100mg | 12 Pills | 55.64€ 52.99€ | |
| Viagra Generic | 200mg | 60 + 4 Pills | 125.19€ 119.23€ | |
| Kamagra Oral Jelly | 100mg | 10 Sachets | 54.55€ 51.95€ | |
| Viagra Generic | 100mg | 90 + 6 Pills | 129.02€ 122.88€ | |
| Kamagra Soft Tabs | 100mg | 272 + 12 Pills | 593.42€ 565.16€ | |
| Kamagra | 100mg | 84 + 6 Pills | 264.44€ 251.85€ | |
| Viagra Generic | 25mg | 60 + 4 Pills | 71.99€ 68.56€ |
By controlling the enzyme, sildenafil helps to maintain an erection after the penis is stroked.
2.1 Recommended Dosage in Adults
[1] Inform patients that taking sildenafil with a high-fat meal may cause delayed onset. [1]Advise patient to inform their clinician of existing or contemplated concomitant therapy, including prescription and OTC drugs and dietary or herbal supplements, as well as any concomitant illnesses. [1]Inform patients of other important precautionary information. Excipients in commercially available drug preparations may have clinically important effects in some individuals; consult specific product labeling for details. Please refer to the ASHP Drug Shortages Resource Center for information on shortages of one or more of these preparations.
Common Side Effects
\* available from one or more manufacturer, distributor, and/or repackager by generic (nonproprietary) name © Copyright, 1959-2026, Selected Revisions April 10, 2024. American Society of Health-System Pharmacists®, 4500 East-West Highway, Suite 900, Bethesda, Maryland 20814. The American Society of Health-System Pharmacists, Inc. represents that the database provided hereunder as formulated with a reasonable standard of care, and in conformity sildenafil tablets lp 100 mg with professional standards in the field. The American Society of Health-System Pharmacists, Inc. Without physical action to the penis, such as that occurring during sexual intercourse, sildenafil will not work to cause an erection. Sildenafil is also used in both men and women sildenafil pricing to treat the symptoms of pulmonary arterial hypertension.
How RedBox Rx can help
[1][67][131] The N-demethylated metabolite, the major circulating metabolite, has a phosphodiesterase selectivity profile similar to that of sildenafil and an in vitro potency for PDE type 5 of approximately 50% of the parent drug. [1][116][131] Sildenafil is eliminated mainly in the feces as metabolites following oral administration. [1][67][91][116][131] In healthy adults and those with ED, approximately 80% of an oral dose is excreted as sildenafil 50 mg tab metabolites in feces and 13% is excreted in urine. Importance of instructing patients to read the manufacturer's patient information before starting sildenafil therapy and each time their prescription is refilled. [1]Instruct patients to avoid contraindicated medications such as regular and/or intermittent use of organic nitrates, organic nitrites (e.g., ''poppers''), and riociguat.
Comparing Sildenafil vs. Tadalafil Dosage
[1]Inform patients that sildenafil is marketed for erectile dysfunction (Viagra) and pulmonary arterial hypertension (Revatio®). [1] Advise patients taking Viagra® not to take Revatio® or other PDE type 5 inhibitors. [1]Advise patients of the potential for sildenafil to augment the blood pressure lowering effect of α-adrenergic blocking agents (e.g., doxazosin) and anti-hypertensive medications (e.g., amlodipine) and concomitant administration may lead to symptomatic hypotension in some patients. [1]Inform patients taking sildenafil for erectile dysfunction and with potential for cardiac risk of sexual activity (e.g., patients with preexisting cardiovascular risk factors) to refrain from further activity and seek medical attention immediately if they experience symptoms (e.g., chest pain, dizziness, nausea) upon initiation of sexual activity. [1]Advise patients to seek immediate medical attention for a sudden loss of vision in one or both eyes while taking sildenafil. This is a type of high blood pressure that occurs between the heart and the lungs. When hypertension occurs in the lungs, the heart must work harder to pump enough blood through the lungs.
What is tadalafil?
[1][4][56][67][91][116][249] Although studies indicate that more than 90% of an oral sildenafil dose is absorbed from the GI tract, the drug undergoes extensive metabolism in the GI mucosa during absorption and on first pass through the liver, with only about 40% of a dose reaching systemic circulation unchanged. [1][4][56][67][91][116][131][249] Pharmacokinetics of the drug (as determined by peak plasma concentrations or AUC) are dose proportional over the single-dose range of 1.25-200 mg.[1][4][56][91][116][131] Peak plasma concentrations of sildenafil and its active N-desmethyl metabolite are achieved within 30-120 (median: 60) minutes following oral administration in fasting adults. [1][4][91][127][130][249] Administration with a high-fat meal delays GI absorption, with a reduction in peak plasma concentrations of about 29% and a delay in time to peak plasma concentrations of about 60 minutes; the extent of absorption is not affected. Sildenafil appears to be widely distributed in the body. [1][4][67][116][131] Sildenafil and its major circulating N-desmethyl metabolite are each approximately 96% bound to plasma proteins; protein binding reportedly is independent of plasma concentration.
What conditions is Sildenafil approved to treat?
[1][67][91][116][131] Sildenafil is distributed to a limited extent in semen following oral administration, with less than 0.001% of a single dose appearing in semen 90 minutes after dosing in healthy individuals. [1][67] Such concentrations are unlikely to cause any effects in sexual partners exposed to the semen. [67] Plasma sildenafil concentrations appear to decline in a biphasic manner following oral administration, with a terminal elimination half-life of about 4 hours (range: 3-5 hours). [1][4][67][91][116][127][130][131] Sildenafil is metabolized principally via hepatic cytochrome P-450 (CYP) microsomal isoenzymes 3A4 (major route) and 2C9 (minor route). [1][26][67][91][131] Plasma concentrations of the active N-desmethyl metabolite are approximately 40% of those observed with sildenafil, and the metabolite reportedly accounts for about 20% of sildenafil's pharmacologic activity. Sildenafil works on the PDE5 enzyme in the lungs to relax the blood vessels.
5.7 Priapism
[1] Such an event may be a sign of non-arteritic anterior ischemic optic neuropathy (NAION), a cause of decreased vision including possible permanent loss of vision. [1]Advise patients to seek prompt medical attention in the event of sudden decrease or loss of hearing while taking sildenafil. [1] These events may be accompanied by tinnitus and dizziness. [1]Advise patients to seek prompt medical attention for an erection that lasts more than 4 hours. [1] If it is not treated right away, priapism can permanently damage the penis.
Using a mail-order pharmacy
[1]Inform patients taking sildenafil for erectile dysfunction that the drug offers no protection against sexually transmitted diseases and patients should use necessary protective measures to guard against such diseases, including the human immunodeficiency virus (HIV). [1]Instruct the patient to seek medical attention immediately if they take too much sildenafil. [1]Inform patients of the risk of symptomatic low blood pressure (e.g., dizziness, lightheadedness, fainting). [1] Monitor blood pressure when administering sildenafil in combination with blood pressure lowering drugs (e.g., α-adrenergic blocking agents). [1]Advise patients to take sildenafil with or without food 1 hour or, if needed, 30 minutes to 4 hours before sexual activity. This will increase the supply of blood to the lungs and reduce the workload of the heart.
| Dosage | Recommended Use | Onset of Action | Duration of Effect | Typical Frequency |
|---|---|---|---|---|
| 10 mg | Mild to moderate ED cases | 30-60 minutes | Up to 4-6 hours | Once per day, as needed |
| 20 mg | Moderate to severe ED | 30-60 minutes | Up to 4-6 hours | Once per day, as needed |
| 5 mg | For elderly or sensitive users | 30-60 minutes | Up to 4 hours | Once per day, as needed |
This medicine is available only with your doctor's prescription. This product is available in the following dosage forms: In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do.
- The onset of action for sildenafil 10mg is usually within 30 minutes.
- It is important to follow prescribed intervals between doses.
- Sildenafil is not intended for recreational use.
- Consult your doctor if you experience prolonged erections.
- Women should avoid using sildenafil unless prescribed for pulmonary hypertension.
This is a decision you and your doctor will make.
Other Comments
The information contained in the database is not a substitute for medical care or treatment by a licensed health care provider. A PDE5 inhibitor (IC50s = 3.6 and 3 nM for PDE5 activity in isolated rabbit platelets and human corpus cavernosum, respectively); selective for PDE5 over PDE1 and PDE3 (IC50s = 0.26 and 65 μM, respectively); reverses glucose-induced decreases in ANG1 expression and reduction of capillary-like tube formation by mouse dermal endothelial cells in vitro; increases the number of functional blood vessels and regional blood flow in the sciatic nerve in a db/db mouse model of diabetic peripheral neuropathy; increases ICP/MAP ratio in castrated rats at 20 mg/kg per day; reduces cardiac arrest and resuscitation-induced increases in angiotensin II ACE, ACE2, and various angiotensin receptors and increases survival in a porcine model of ischemia/reperfusion injury Sildenafil is used to treat erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called phosphodiesterase type-5 from working too quickly. The penis is one of the areas where this enzyme works. For this medicine, the following should be considered: Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines.
- Erectile dysfunction can be caused by various medical conditions; discuss treatment options with a doctor.
- The medication is generally well-tolerated but requires medical supervision.
- Side effects can include indigestion, muscle aches, or flushing.
- Avoid using sildenafil if you are pregnant or breastfeeding.
- Proper dosage and timing maximize the benefits of sildenafil 10mg.
Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals.
| Side Effect | Severity | Likelihood | Management Tips |
|---|---|---|---|
| Headache | Mild to moderate | Common | Mild analgesics, hydration |
| Flushing | Mild | Common | Cool environment, stay hydrated |
| Nasal congestion | Mild | Moderately common | Decongestants if necessary |
| Dizziness | Mild | Possible | Avoid sudden movements |
| Visual disturbances | Mild | Rare | Rest and monitor if occurs |
For non-prescription products, read the label or package ingredients carefully.
- Medication effectiveness can be impacted by certain health conditions.
- Men should not use sildenafil if they have a history of stroke.
- Sildenafil 10mg can sometimes cause nasal congestion.
- It’s important to report any unusual side effects to your doctor.
- Do not use sildenafil if you are taking other ED medications.
Appropriate studies have not been performed on the relationship of age to the effects of sildenafil in children younger than 1 year of age.
| Parameter | Value | Notes |
|---|---|---|
| Absorption Rate | Rapid | Peak plasma levels in ~60 minutes |
| Bioavailability | Approximately 40% | Due to first-pass metabolism |
| Half-life | About 4 hours | Time to reduce plasma concentration by half |
| Metabolism | Liver (primarily via CYP3A4) | Enzymatic breakdown |
| Excretion | Mainly feces (~80%) | Some via urine (~13%) |