Understanding the Chemical Structure of Sildenafil Citrate
Ballard et al (1998) Effects of silde.
- Sildenafil citrate was approved by the FDA in 1998.
- Its discovery revolutionized the treatment of erectile dysfunction.
- The medication requires sexual stimulation to be effective.
- It is not an aphrodisiac; it facilitates natural response.
- Overdose symptoms may include severe hypotension.
- Recreational use of sildenafil without prescription is risky.
- Combining with alcohol can increase side effects.
- It should be stored at room temperature away from moisture.
Turko et al (1999) Inhibition of cyclic cGMP-binding cyclic GMP-specific phosphodiesterase (type 5) by silde.
1. How it works
You may be at higher risk for this if you take a blood thinner medicine. Tell your healthcare provider if you get nosebleeds often while taking sildenafil. If your nosebleed is severe or will not stop after applying pressure, get help right away. People who are allergic to any of the following should not take sildenafil. Any of the ingredients in the specific product dispensed Your pharmacist can tell you all of the ingredients in the specific sildenafil products they stock.
Liens externes
Sildenafil should not be taken while you are using certain other medicines. Before taking sildenafil, tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. See the Interactions section for more details. Do not take sildenafil unless it has been prescribed to you by a healthcare provider. Do not share sildenafil with other people, even if they have the same condition as you.
Sildenafil vs. tadalafil
Keep sildenafil out of the reach of children. If you keep sildenafil oral liquid in a refrigerator, make sure to keep it away from children who also use the refrigerator. Sexual activity can put extra strain on your heart, which may be unsafe for people with certain health problems, such as a recent heart attack. Talk to your healthcare provider to see if your heart is strong enough for sex. If you feel chest pain, dizziness, or nausea during sex, stop and contact your healthcare provider right away. Ghofrani et al (2006) Sildenafil: from angina to erectile dysfunction to pulmonary hypertension and beyond.
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Smith-Berdan et al (2019) Viagra enables efficient, single-day hematopoietic stem cell mobilization.
Other uses for this medicine
This survey is being conducted by the WebMD marketing sciences department. You can now submit reviews for your favorite Tocris products. 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 of hematopoietic stem cells (HSCs) in combination with AMD 3100 (Cat. If you know of a relevant reference for Sildenafil citrate, please let us know.
- Sildenafil is available in various dosages: 25 mg, 50 mg, 100 mg.
- Starting dose depends on individual health and response.
- Dose adjustments should be done under medical supervision.
- Overuse may lead to increased side effects.
- Missing a dose is generally safe; do not double up.
- The drug may be taken with or without food.
- It’s generally recommended to avoid heavy meals before taking.
- Always follow your healthcare provider’s guidance.
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| Indication | Patient Group | Dosage Recommendation | Additional Notes |
|---|---|---|---|
| Erectile Dysfunction | Men aged 18-65 | 50 mg30-1 hour before activity | Adjust based on efficacy and tolerability |
| Pulmonary Hypertension | Adults with PAH | 20 mg three times daily | Extended release available |
| Raynaud's Phenomenon | People with secondary Raynaud's | Off-label use, consult physician | Limited clinical evidence |
mobilization, COVID-19, pulmonary, edema, Phosphodiesterases, Stem, Cell, Proliferation, Hematopoietic, Cells, 3784, Tocris Bioscience Citations are publications that use Tocris products.
More about sildenafil
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. 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.
Jet lag research
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. 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.
How is sildenafil supplied (dosage forms)?
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. 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. Vandendriessche et al (2013) The soluble guanylate cyclase activator BAY 58-2667 protects against morbidity and mortality in endotoxic shock by recoupling organ systems.
How should this medicine be used?
Sildenafil citrate is also offered as sildenafil 100mg hexal part of the Tocriscreen 2.0 Max, Tocriscreen Antiviral Library and Tocriscreen FDA-Approved Drugs. Find out more about compound libraries available from Tocris. 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. Xiaofeng et al (2021) Intracellular H2S production is an autophagy-dependent adaptive response to DNA damage.
3. Downsides
Sildenafil does not protect against sexually transmitted infections, including HIV. Sildenafil belongs to a group of medicines, known as phosphodiesterase-5 (PDE-5) inhibitors, which are used to treat erectile dysfunction or pulmonary arterial hypertension. You should not take more than one PDE-5 inhibitor medicine. Medicines in this group include avanafil (Stendra), sildenafil (Viagra, Revatio, and others), tadalafil (Cialis and others), and vardenafil (Levitra, Staxyn). Use an accurate measuring device to measure your dose of sildenafil oral liquid.
How it works
A household spoon is not an accurate measuring device and may cause you to take the wrong dose. Ask your pharmacist to buy sildenafil citrate online canada recommend an appropriate measuring device. 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.
Still not finding the right product?
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. 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. Cell Chem Biol 28 1669-1678.e5 PMID: 34166610 Do you know of a great paper that uses Sildenafil citrate from Tocris?
- Sildenafil citrate is sometimes used off-label for other conditions.
- Off-label uses include altitude sickness and Raynaud’s phenomenon.
- Research continues into additional therapeutic effects.
- The drug’s development was led by Pfizer.
- It is often used in combination with other ED treatments.
- Patients should avoid grapefruit juice, which can affect drug levels.
- Some formulations include chewable or dissolvable tablets.
- Ongoing studies investigate its cardiovascular benefits.
There are currently no reviews for this product.
| Parameter | Frequency | Purpose | Notes |
|---|---|---|---|
| Blood Pressure | Before and after dosage | Check for hypotension | Especially in high-risk groups |
| Visual Function | Periodic | Monitor for retinal issues | Baseline and follow-up |
| Liver Function Tests | As needed | Detect hepatotoxicity | For long-term users |
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What other information should I know?
Sildenafil may cause allergic reactions, which can be serious. Stop taking sildenafil and get help right away if you have any of the following symptoms of a serious allergic reaction. Swelling of the face, lips, mouth, tongue, or throat Itching, skin rash, or pale red bumps on the skin called hives Sildenafil may cause an unwanted erection that is persistent, painful, and that may occur without sexual arousal. Permanent damage to the penis may occur if priapism is not treated quickly. Stop taking sildenafil and get emergency help if you have any of the following symptoms of priapism.
Autres utilisations
Erection lasting for more than four hours Erection that is unrelated to sexual stimulation Sildenafil can cause mild, temporary vision changes such as seeing a blue tint, abnormal colors, blurry vision, or sensitivity to light. Though rare, some people have reported permanent vision loss. Stop taking sildenafil and get help right away if you have sudden vision loss in one or both eyes. Sudden hearing loss has been reported after taking sildenafil. This may occur along with dizziness and ringing in the ears.
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Stop taking sildenafil and get help right away if you have sudden hearing loss or suddenly have trouble hearing as well as usual. Sildenafil may cause a mild and temporary drop in blood pressure. You may be at a higher risk if you have certain health conditions or take blood pressure medicines. If you feel faint or dizzy, lie down. Tell your healthcare provider right away if you have any of the following symptoms of low blood pressure. $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
| Parameter | Value | Description | Notes |
|---|---|---|---|
| Absorption | Rapid | Peak plasma levels in 30-120 mins | After oral administration |
| Bioavailability | 40% | Percentage of dose reaching systemic circulation | Subject to food effects |
| Half-life | 4 hours | Time for plasma concentration to reduce by half | --- |
| Metabolism | Liver (CYP3A4 enzymes) | Mainly via CYP3A4 and CYP2C9 | |
| Excretion | Feces and urine | 80% via feces, 13% via urine |
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.
- Sildenafil can cause sudden vision loss (rare side effect).
- Men with a history of retina problems should use caution.
- It may cause a drop in blood pressure, leading to dizziness.
- Patients should report any persistent erection lasting over 4 hours.
- It is crucial to have proper medical evaluation before use.
- Not suitable for individuals with severe liver or kidney conditions.
- The medication is also investigated for breast cancer treatment.
- Proper hydration can help minimize some side effects.
Support: Zydus Cadila provided placebo and sildenafil tablets.
7. Interactions
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. 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. 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.