Clinical Indications for Sildenafil Citrate Beyond Erectile Dysfunction

Xiaofeng et al (2021) Intracellular sildenafil 50mg tablet H2S production is an autophagy-dependent adaptive response to DNA damage.

• The discovery of sildenafil began with research on heart drugs.
• It was found to cause vasodilation as a side effect.
• Pfizer refined the drug for erectile dysfunction.
• It became a blockbuster drug upon FDA approval.
• Sildenafil has helped millions worldwide.
• It has changed perceptions about male sexual health.
• Ongoing research explores new formulations.
• Awareness campaigns promote safe usage.

Cell Chem Biol 28 1669-1678.e5 PMID: 34166610 Do you know of a great paper that uses Sildenafil citrate from Tocris?

Medical uses

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and only take the next dose. Ask your healthcare provider if you are unsure what to do after a missed dose. This survey sildenafil spray is being conducted by the WebMD marketing sciences department. You can now submit reviews for your favorite Tocris products.

What should happen if a dose is missed?

Your review will help other researchers decide on the best products for their research. Enhances nitric oxide-dependent relaxation of human corpus cavernosum in vitro. Sildenafil citrate promotes mobilization sildenafil pink pill of hematopoietic stem cells (HSCs) in combination with AMD 3100 (Cat. Sildenafil citrate is also offered as part of the Tocriscreen 2.0 Max, Tocriscreen Antiviral Library and Tocriscreen FDA-Approved Drugs. Find out more about compound libraries available from Tocris. There are currently no reviews for this product. Be the first to review Sildenafil citrate and earn rewards!

$25/€18/£15/$25CAN/¥75 Yuan/¥2500 Yen for a review with an image $10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image Departments of Nephrology and Urology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India Received December 27, 2005; Accepted April 10, 2006; Published online May 24, 2006 Originally published online as doi:10.1053/j.ajkd.2006.04.061 on May 24, 2006. Support: Zydus Cadila provided placebo and sildenafil tablets. DOI: 10.1053/j.ajkd.2006.04.061 External LinkAlso available on ScienceDirect External Link ERECTILE DYSFUNCTION (ED) is the persistent inability to achieve a sustained erection sufficient for satisfactory sexual performance.

The mental stress resulting from ED affects patients’ interactions with family and others.1 ED is observed frequently in patients with end-stage renal disease and patients on hemodialysis therapy, and the estimated prevalence is between 71% and 82% in these patients.2,3 Only up to 75% of these patients recover from ED after renal transplantation.4 ED also may occur in up to a third of patients receiving a double transplant with vascular anastomosis to the hypogastric artery because of reduced arterial flow to the penis.5 Treatment options for men with ED include psychosexual therapy, drug therapy, transurethral or intracavernosal therapy, treatment with vacuum constriction devices, and surgical treatment.6 Sildenafil citrate is a selective inhibitor of phosphodiesterase type 5, which is the predominant isozyme interacting with cyclic guanosine monophosphate in corpus cavernosum and results in increased smooth muscle relaxation and improved erection. Recently, sildenafil was shown to be an effective, safe, and well-tolerated drug for men with ED7 and end-stage renal disease and maintenance hemodialysis patients with ED.8-11 There are few either nonrandomized or uncontrolled studies on the use of sildenafil in renal allograft recipients.12-16 There have been no double-blind placebo-controlled studies with sildenafil in renal allograft recipients.

What should I do if I forget a dose?

Tell your healthcare provider about all of your health conditions and any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. This will help them determine if sildenafil is right for you. In particular, make sure that you discuss any of the following. Tell your healthcare provider if you have any of the following. Heart problems, such as heart rhythm problems, chest pain, or heart failure Heart attack, stroke, or heart surgery within the past six months High blood pressure that is still too high despite taking medicines for it Peyronie's disease, or a penis with an abnormal curve or shape An erection lasting longer than four hours A blood disorder, such as sickle cell anemia An inherited eye disease called retinitis pigmentosa Vision loss, or a problem with the nerve between your eyes and brain (optic nerve) Health conditions or factors that raise the risk of optic nerve problems, such as diabetes, high cholesterol, smoking, being older than 50, or having a “crowded disc,” which is something an eye doctor may see in an eye exam Pulmonary veno-occlusive disease, a condition where blood vessels in the lungs are blocked It is not known if or how sildenafil could affect pregnancy or harm an unborn baby.

Quality Segment

Tell your healthcare provider if you are or plan to become pregnant. Tell your healthcare provider if you are breastfeeding or plan to breastfeed. Your healthcare provider will advise you if you should take sildenafil while breastfeeding. If you take sildenafil after you eat a high-fat meal, such as a burger and fries, it may take longer to start working. Your healthcare provider may recommend limiting or avoiding grapefruit while taking sildenafil. The area under the curve (AUC) of cyclosporine before and after sildenafil therapy was not compared in any of these studies.12-16 Therefore, we conducted a randomized, double-blind, placebo-controlled, crossover study to establish the safety and efficacy of sildenafil in renal transplant recipients with ED. The study is designed as a randomized, double-blind, placebo-controlled, crossover trial.

5. Tips

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis. Tocris products are intended for laboratory research use only, unless stated otherwise. The following data is based on the product molecular weight 666.7. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Biochem/physiol Actions

Calculate the mass, volume, or concentration required for a solution. Calculate the dilution required to prepare a stock solution. References are publications that support the biological activity of the product. Ballard et al (1998) Effects of silde. Turko et al (1999) Inhibition of cyclic cGMP-binding cyclic GMP-specific phosphodiesterase (type 5) by silde. Inclusion criteria for patients were renal transplant recipients who: (1) had stable graft function in the last 6 months, (2) were 18 years and older, (3) had medically documented ED as defined by the National Institute of Health Consensus Panel,1 and (4) were in a stable relationship with a female partner in the last 6 months.

2. Upsides

Ghofrani et al (2006) Sildenafil: from angina to erectile dysfunction to pulmonary hypertension and beyond. Smith-Berdan et al (2019) Viagra enables efficient, single-day hematopoietic stem cell mobilization. If you know of a relevant reference for Sildenafil citrate, please let us know. Keywords: Sildenafil citrate, Sildenafil citrate supplier, phosphodiesterases, 5, PDE5, inhibitors, inhibits, orally, active, potent, HSC, hematopoietic, haematopoietic, stem, cells, mobilization, COVID-19, pulmonary, edema, Phosphodiesterases, Stem, Cell, Proliferation, Hematopoietic, Cells, 3784, Tocris Bioscience Citations are publications that use Tocris products. Vandendriessche et al (2013) The soluble guanylate cyclase activator BAY 58-2667 protects against morbidity and mortality in endotoxic shock by recoupling organ systems. All patients were subjected to a detailed medical history and physical examination that included blood pressure, pulse rate, 12-lead electrocardiogram, cyclosporine A level by means of enzyme multiplied immunoassay method, and standard biochemistry (blood urea nitrogen, serum creatinine) and hematologic tests (hemoglobin, total and differential leukocyte count, and platelet count) at baseline and after each crossover. Exclusion criteria included the following: (1) penile anatomic deformities, (2) history of recent stroke, (3) myocardial infarction in the previous 6 months, (4) proliferative diabetic retinopathy, (5) severe autonomic neuropathy, (6) regular treatment with nitrates and androgens, and (7) spinal cord injury. At week 0, each eligible patient was given a randomization number that followed a randomization table generated by the method of random permuted blocks. The system generating the randomization assignment was operationally independent from study investigators who executed the randomization assignment and conducted the study.

Renal allograft recipients with ED were divided into 2 groups, the placebo group and sildenafil group, by randomization and then crossed over to another group after 8 weeks in a double-blind manner.

• Sildenafil works by inhibiting phosphodiesterase type 5 enzyme.
• This inhibition increases cGMP levels in the body.
• Elevated cGMP leads to smooth muscle relaxation.
• It promotes vasodilation in the corpus cavernosum.
• This process facilitates an erection during sexual activity.
• The drug’s pharmacokinetics allow for rapid absorption.
• Food intake can influence absorption rate.
• It is effective in men of various ages.

The washout period of 2 weeks was ensured in each patient during crossover from 1 group to the other by the investigator.

The History of Sildenafil Citrate, AKA Viagra

Grapefruit or grapefruit juice can raise sildenafil levels in your body, which can increase the risk of side effects. There are no known interactions between sildenafil and alcohol. Always tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. In particular, make sure that you discuss if you are using any of the following before taking sildenafil. Tell your healthcare provider about all medicines that you take or have recently taken.

Sildenafil vs. tadalafil

This may not be a complete list of medicines that can interact with sildenafil. If you or someone else has used too much sildenafil, get medical help right away, call 911, or contact a Poison Control center at 800-222-1222. For this use, sildenafil is used only when needed. Take it as your healthcare provider recommends, which is usually between 30 minutes to four hours before planned sexual activity. For this use, take sildenafil as your healthcare provider recommends, which is usually three times a day. Patients were instructed to take a single dose of study medication in a day, not more than once daily.

The initial dose was 50 mg of sildenafil citrate or placebo of identical appearance. Based on the investigator’s judgment of efficacy and tolerability, the dose could be increased to 100 mg or decreased to 25 mg of sildenafil or placebo.

• Sildenafil molecules work by relaxing smooth muscle tissue.
• This relaxation allows increased blood flow in blood vessels.
• It is less effective without sexual arousal.
• Some common brand names include Viagra, Revatio, and Kamagra.
• Sildenafil's patent expired, leading to numerous generics.
• Generic versions are usually more affordable.
• It’s important to follow prescription instructions strictly.
• Using more than the recommended dose can be dangerous.