Sildenafil citrate 100 mg starting dose in men with erectile dysfunction in an international, double-blind, placebo-controlled study: effect on the sexual experience and reducing feelings of anxiety about the next intercourse attempt

What special precautions should I follow?
4.2 Hypersensitivity Reactions
4.1 Nitrates
What other drugs will affect sildenafil?
8.6 Renal Impairment

Peacher et Jennifer F. Potter, « Swimming-Induced Pulmonary Edema », Circulation, vol. (2004) « Is Viagra a viable conservation tool? Response to Hoover » Environmental Conservation 31(1):4-6.

What special precautions should I follow?

Throw away any unused mixed Revatio® oral liquid after 60 days. It is important that you tell all of your doctors that you take sildenafil. If you need emergency medical care for a heart problem, it is important that your doctor knows when you last took sildenafil. Do not use this medicine if you are also using a nitrate medicine, often used to treat angina or high blood pressure. Some illegal ("street") drugs called "poppers" (such as amyl nitrate, butyl nitrate, or nitrite).

4.2 Hypersensitivity Reactions

You may report side effects to the FDA at 1-800-FDA-1088. ↑ Masse molaire calculée d’après « Atomic weights of the elements 2007 », sur ↑ (en) Matthew J Taylor, Lisa Rudkin, Philippa Bullemor-Day et Jade Lubin, « Strategies for managing sexual dysfunction induced by antidepressant medication », Cochrane Database of Systematic Reviews, vol. ↑ Richard E. Moon, Stefanie D. Martina, Dionne F. But the medication is also sold as a generic drug simply called sildenafil. It’s usually safe to take 100mg (milligrams) of sildenafil when your healthcare provider prescribes that dose. Your provider will determine which dose is best sildenafil 60mg for you before they write you a prescription. Often, men will start on a 50mg dose and adjust as needed. Keep reading to learn more about who may benefit from taking 100mg of sildenafil, as well as the potential risks, drug interactions, and other considerations. Sildenafil (with the active ingredient sildenafil citrate) is available in various doses. Currently, 100mg is the highest dose of sildenafil approved by the FDA (U.S. Food and Drug Administration) for treating erectile dysfunction.

Property	Description	Typical Dose	Onset Time	Duration of Action
Mechanism of Action	PDE5 inhibitor that enhances blood flow to the penis	100 mg	30-60 min	4-6 hours
Bioavailability	Percentage of drug reaching systemic circulation	~40%	N/A	N/A
Half-life	Time for plasma concentration to reduce by half	4 hours	N/A	N/A
Metabolism	Liver enzymes involved (primarily CYP3A4)	CYP3A4	N/A	N/A

Taking a 100mg dose of sildenafil is usually OK if that’s the amount your medical provider tells you to take.

4.1 Nitrates

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements. Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur: burning feeling in the chest or stomach burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings decrease in amount of urine or the frequency of urination dizziness or lightheadedness, especially when getting up suddenly from a lying or sitting position dryness, redness, scaling, or peeling of the skin increase in the size of the pupil redness, burning, or swelling of the eyes redness, itching, or tearing of the eyes seeing shades of colors differently than before swelling of the face, hands, feet, or lower legs unusual feeling of burning or stinging of the skin Some side effects may occur that usually do not need medical attention.

More common

These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: pain or tenderness around the eyes and cheekbones diarrhea or stomach cramps (severe or continuing) numbness or tingling of the hands, legs, or feet redness, soreness, swelling, or bleeding of the gums sensation of motion, usually whirling, either of one's self or of one's surroundings sexual problems in men (continuing), including failure to experience a sexual orgasm sores in the mouth and on the lips Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Call your doctor for medical advice about sildenafil from canada side effects. You shouldn’t exceed your provider’s recommended dosage. Your provider will likely only prescribe a 100mg dose if you’ve already tried a lower dose of sildenafil and it hasn’t been effective. The usual starting dose is 50mg, which can be lowered to 25mg. Your healthcare provider may also start treatment for ED with the 100mg dosage if you have severe symptoms. For example, if it’s particularly difficult to get an erection, even with substantial sexual stimulation, or if you’re never able to get an erection. A healthcare professional might also consider how often you have sex.

Sildenafil citrate 100 mg may interact with other medications, affecting how they work.
A healthcare professional should review your medications to avoid adverse interactions.
Avoid combining sildenafil with certain antibiotics, antifungals, or blood pressure medications.

Your dosage may be adjusted if you have sex frequently and take sildenafil very often — or if you only take this medication once every few days for less frequent sexual intercourse.

People with heart problems should consult a doctor before using sildenafil 100 mg.
Sildenafil is contraindicated in patients with severe liver or kidney impairment.
Allergic reactions, though rare, may include rash, itching, or swelling.

Sildenafil was originally developed to treat angina (chest pain) and hypertension (high blood pressure). In the early ‘90s, researchers discovered that it may make an effective treatment for erectile dysfunction. Along with ED, sildenafil has been used off-label as a treatment for: Raynaud’s phenomenon (decreased blood flow to the extremities, causing coldness and numbness) Raynaud’s phenomenon (decreased blood flow to the extremities, causing coldness and numbness) Altitude-induced hypoxemia (lack of sufficient oxygen in the blood in high altitudes) Altitude-induced hypoxemia (lack of sufficient oxygen in the blood in high altitudes) Off-label use is when a drug is prescribed by a licensed healthcare provider to treat something it’s not FDA-approved for — this is legal and common. The dosages of sildenafil are typically different when treating these other health conditions.

What other drugs will affect sildenafil?

It is important to tell your doctor about any heart problems you have now or may have had in the past. This medicine can cause serious side effects in patients with heart problems. If you experience a prolonged or painful erection for 4 hours or more, contact your doctor immediately. This condition may require prompt medical treatment to prevent serious and permanent damage to your penis. If you experience a sudden loss of vision in one or both eyes, contact your doctor immediately.

Dosage for pulmonary arterial hypertension (PAH)

Check with your doctor right away if you have a sudden decrease in hearing or loss of hearing, which may be accompanied by dizziness and ringing in the ears. If you already use medicine for high blood pressure (hypertension), sildenafil could make your blood pressure go too low. Call your doctor right away if you have blurred vision, confusion, dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly, sweating, or unusual tiredness or weakness. This medicine does not protect you against sexually transmitted diseases (including HIV or AIDS). Use protective measures and ask your doctor if you have any questions about this. Learn more in our sildenafil dosages guide.

Patient Type	Recommended Dose	Notes
Adult Men	50-100 mg approximately 1 hour before activity	Max dose per event; not to exceed 100 mg
Elderly Patients	Start at lower end, 25-50 mg	Increased sensitivity and risk of side effects
Patients with Kidney or Liver Disease	Dose adjustment may be necessary	Consult healthcare provider

Sildenafil works well for most men with erectile dysfunction at any dosage.

Country/Region	Approved Use	Regulatory Body	Notes
USA	Prescribed for ED and PAH	FDA	Prescription only
European Union	Authorized for ED and PAH	EMA	Prescription required
Australia	Approved for ED and PAH	TGA	Schedule 4 medication
Other Countries	Varies; often prescription required	Local authorities	Check local regulations

However, the highest 100mg dosage produces improvements for a higher percentage of men than 50 or 25mg. The downside is that 100mg also generally causes more side effects. If you have mild or moderate ED, your healthcare provider will likely prescribe 50mg of sildenafil as your starting dose. This is the typical go-to oral dose for sildenafil — for many men, it’s enough to treat erectile dysfunction and improve sexual performance. The 100mg dose of sildenafil is generally safe if that’s what your provider prescribed.

8.6 Renal Impairment

Children 1 year of age and older weighing 20 to 45 kg—20 mg 3 times a day. Children 1 year of age and older weighing 20 kg or less—10 mg 3 times a day. Children younger than 1 year of age—Use and dose must be determined by your doctor. For oral dosage forms (suspension or tablets): If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule.

Sildenafil Tablets for ED

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep out of the reach of children. Do not keep outdated medicine or medicine no longer needed. Ask your healthcare professional how you should dispose of any medicine you do not use. Store mixed oral liquid in the refrigerator. In some cases, 100mg may be too much. And even those who start on the 50mg dose might go down to 25mg of sildenafil if they’re experiencing unmanageable side effects. In clinical trials, researchers found that 82 percent of men with ED reported some improvements in erectile function after using sildenafil at a dosage of 100mg. In the same trials, 74 percent and 63 percent of men reported improvements with 50mg and 25mg of sildenafil, respectively.

Sildenafil citrate 100 mg should be taken approximately 30-60 minutes before sexual activity.
Avoid taking sildenafil with a high-fat meal, as it may delay absorption.
Do not exceed one dose in 24 hours to reduce risk of side effects.

Product	Dosage	Quantity + Bonus	Price
Kamagra Oral Jelly	100mg	220 + 18 Sachets	662.24€ 630.70€
Kamagra Oral Jelly	100mg	21 Sachets	95.92€ 91.35€
Viagra Generic	100mg	30 + 4 Pills	60.91€ 58.01€
Kamagra Soft Tabs	100mg	12 Pills	57.55€ 54.81€
Kamagra	100mg	120 + 6 Pills	330.74€ 314.99€
Viagra Generic	200mg	30 + 2 Pills	83.07€ 79.11€
Viagra Generic	200mg	90 + 6 Pills	170.79€ 162.66€
Kamagra Oral Jelly	100mg	110 + 9 Sachets	334.87€ 318.92€
Viagra Generic	150mg	180 + 10 Pills	236.46€ 225.20€
Viagra Generic	50mg	270 + 8 Pills	198.48€ 189.03€
Viagra Generic	25mg	90 + 6 Pills	105.03€ 100.03€
Viagra Generic	50mg	60 + 4 Pills	83.93€ 79.93€
Kamagra Polo	100mg	20 Pills	83.56€ 79.58€
Viagra Generic	100mg	10 Pills	28.91€ 27.53€
Kamagra Oral Jelly	100mg	63 + 7 Sachets	224.18€ 213.50€
Kamagra	100mg	32 Pills	121.24€ 115.47€
Kamagra Soft Tabs	100mg	20 Pills	79.79€ 75.99€