Viagra is not useful for those who have performance anxiety or other physical issues such as structural deformities of the penis. Erectile dysfunction is a condition seen in males where the penis does not harden when a viagra jelly sachets uk man is sexually excited or when he cannot maintain an erection long enough to penetrate the partner.
| Brand Name | Active Ingredient | Typical Dosage | Manufacturer | Price Range ($ per pill) |
|---|---|---|---|---|
| Viagra | Sildenafil citrate | 50mg, 100mg | Pfizer | 10 - 25 |
| Kamagra | Sildenafil citrate | 50mg, 100mg | Ajanta Pharma | 5 - 15 |
| Caverta | Sildenafil citrate | 50mg, 100mg | Ajanta Pharma | 8 - 20 |
| Revatio | Sildenafil citrate | 20mg, 40mg | Pfizer | 15 - 30 |
When a man is sexually stimulated, the body's normal response is increased blood flow to the penis, which causes an erection. Sildenafil causes chemical changes in the penile blood vessels that help maintain an erection after the penis is stroked. Without physical stimulus such as fondling or stroking, sildenafil will not cause an erection. No, Viagra is not a psychoactive drug. Therefore, you do not become physically dependent on it. That means its use will not cause withdrawal symptoms. However, psychological dependence may be seen in some people. It is therefore advised to take it only as directed and in recommended doses. For erectile dysfunction, the drug must be taken only as required, preferably 30 minutes before the act. DO NOT take more than two doses in a day. The recommended dose for adults aged 18 to 64 years is 50 mg.
- Cialis (Tadalafil): Alternative to Viagra, lasts up to 36 hours, allows for more spontaneity, needs proper medical consultation.
- Levitra (Vardenafil): Works in about 25 minutes, effective for 4-5 hours, suitable for men with certain health conditions.
- Staxyn (Vardenafil ODT): Orally disintegrating tablet, no water needed, quick onset, convenient for on-the-go use.
Adults over the age of 65 years often start with the lower dose, 25 mg. The dose could be increased to 100 mg depending on how effective it is and how well it's tolerated. Other than erectile dysfunction, Viagra is also used for treating a condition called pulmonary hypertension (high blood pressure in the lungs).
The Best Type of Viagra?
In the U.S., you can legally buy generic Viagra (sildenafil) online, but only with a prescription from a licensed healthcare professional. Sildenafil for erectile dysfunction is not an over‑the‑counter (OTC) medicine in the U.S., so you cannot legally buy it without a prescription. Cialis vs Viagra - What's the difference between them? Do you know these 11 amazing facts about Viagra? Is generic Viagra available in the U.S.?
Professional resources
Does generic Viagra work just like regular Viagra? Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Viagra only for the indication prescribed. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. Viagra (sildenafil) is one of the world’s most popular drugs that has changed the lives of countless couples by managing male erectile dysfunction. However, you should not use this medication without consulting a healthcare professional. This condition may require you to take Viagra daily, but the dosage, in this case, is different. Though the U.S.
| Brand Name | Common Side Effects | Rare Side Effects | Contraindications | Warnings |
|---|---|---|---|---|
| Viagra | Headache, flushing, nasal congestion | Vision changes, dizziness | Nitrate medications, heart conditions | Use with caution in cardiovascular disease |
| Kamagra | Dizziness, nausea | Priapism, allergic reactions | Heart issues, or if allergic to Sildenafil | Not approved in some countries |
| Caverta | Flushing, stomach upset | Sudden vision loss | Nitrate drugs, allergy to sildenafil | Consult doctor if side effects persist |
| Revatio | Headaches, muscle pain | Hearing loss, vision disturbances | Similar to Viagra contraindications | Needs doctor supervision |
Food and Drug Administration (FDA) has not approved the use of Viagra in females for low libido, many women use this drug, as the improved blood flow to their genitals causes improved receptiveness and sensations. This is especially true when a woman is on the verge of menopause. Many studies have confirmed that Viagra may not necessarily treat low sexual drive in women, as women do not have “erection.” The sexual response in women is a complex psychological phenomenon with emotional, hormonal, and physical stimuli.
- Maintaining Vascular Health: ED is often a vascular issue; protect your heart to protect your erection.
- The Role of Nitric Oxide: PDE5 inhibitors work by enhancing this natural vasodilator's effects.
- On-Demand vs. Daily Dosing: On-demand (before sex) vs. daily low-dose for constant readiness.
- The Placebo Effect: A significant response in ED trials, highlighting the mind-body connection.
- Treatment is Multimodal: Often most effective when combining medication, lifestyle, and therapy.
There are other FDA-approved drugs to treat low libido in women. Talk to your doctor to find out which is best for you. That is why you must discuss it with your doctor before you start Viagra. The drug is capable of many drug-drug interactions causing unpleasant side effects or reducing the potency of other drugs you take. The side effects of the medication include: Hypersensitivity reactions: Mild rashes, hives, chest tightness, breathing difficulty to even anaphylactic shock.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Professional | 100mg | 180 + 4 Pills | 337.30€ 321.24€ | |
| Viagra Generic | 50mg | 270 + 8 Pills | 198.48€ 189.03€ | |
| Viagra Professional | 100mg | 30 Pills | 88.92€ 84.69€ | |
| Viagra Generic | 200mg | 120 + 8 Pills | 204.80€ 195.05€ | |
| Viagra Generic | 50mg | 60 + 4 Pills | 83.93€ 79.93€ | |
| Viagra Soft Tabs | 100mg | 30 + 4 Pills | 83.06€ 79.10€ | |
| Viagra Oral Jelly | 100mg | 10 Sachets | 46.36€ 44.15€ | |
| Viagra Original | 100mg | 34 + 2 Pills | 163.67€ 155.88€ | |
| Viagra Generic | 100mg | 90 + 6 Pills | 129.02€ 122.88€ | |
| Viagra Generic | 200mg | 20 Pills | 61.69€ 58.75€ |
General systemic effects: Headache, flushing, heartburn, muscle cramps, giddiness, trouble with sleep. Painful erection (priapism): In some individuals, Viagra can cause priapism. This is a condition in which there is a long-lasting and painful erection. Priapism is a medical emergency that needs to be treated right away or it may damage the penis tissue and cause irreversible erectile dysfunction. Vision problems: Many studies report that the use of Viagra in high doses can cause mild and transient visual symptoms such as a bluish tinge to vision and an increased perception of brightness. These symptoms are temporary and do not cause any long-term vision damage.
Treating Erectile Dysfunction
The U.S. Food and Drug Administration has approved the use of sildenafil (brand name Viagra) only in “men” older than 18 years. Pfizer, the company that manufactures this drug, has confirmed that the typical Viagra user is on average 53 years old. The company does not keep records of users younger than 33 years. The drug should not be used in young men who do not have erection problems.
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Recreational use of Viagra as an “enhancement” pill is strongly discouraged, as the pill can cause serious side effects. If you are in your twenties or thirties and suffer from “bedroom problems,” it is important to find out the exact cause and contact your doctor for its treatment. Simply put, Viagra (sildenafil) works by improving the blood supply to the genitals. This helps in venous engorgement in the penile tissue and thus a stronger erection. It also cuts down the refractory period in men, that is a man using Viagra can get the next erection within 10 minutes, rather than 20 (which is normal). Elderly patients (65 years and above) who have age-related liver, kidney, or heart problems should start Viagra in the lowest possible doses to reduce the incidences of adverse reactions.
What other information should I know?
erection is painful or lasts longer than 4 hours (prolonged erection can damage the penis). Call your doctor at once if you have: ringing in your ears, or sudden hearing loss; ringing in your ears, or sudden hearing loss; swelling in your hands, ankles, or feet; swelling in your hands, ankles, or feet; a light-headed feeling, like you might pass out. a light-headed feeling, like you might pass out. abnormal vision (blurred vision, changes in color vision) abnormal vision (blurred vision, changes in color vision) This is not a complete list of side effects and others may occur. You may report side effects to FDA at 1-800-FDA-1088.
Patient resources
Do not take Viagra with similar medications such as avanafil (Stendra), tadalafil (Cialis) or vardenafil (Levitra). Tell your doctor about all other medications you use for erectile dysfunction. Tell your doctor about all your current medicines and any you start or stop using, especially: drugs to treat high blood pressure or a prostate disorder; drugs to treat high blood pressure or a prostate disorder; medicine to treat HIV/AIDS - atazanavir, indinavir, ritonavir, or saquinavir; medicine to treat HIV/AIDS - atazanavir, indinavir, ritonavir, or saquinavir; medications used to treat pulmonary artery hypertension. medications used to treat pulmonary artery hypertension. Other drugs may interact with sildenafil, including prescription and over-the-counter medicines, vitamins, and herbal products. Have a heart condition that requires you to take isosorbide dinitrate, isosorbide mononitrate, or nitroglycerin, or if you take drugs such as riociguat or ritonavir.
Other Options for the Treatment of Erectile Dysfunction
Not all possible interactions are listed in this medication guide. You can take Viagra (sildenafil) if you have high blood pressure that is controlled by blood pressure medications. You should tell your doctor if you have high or low blood pressure before starting Viagra. Cialis (tadalafil) and Viagra (sildenafil) are both prescription drugs used to treat erectile dysfunction (ED), but taking them together is generally not recommended. Mixing these medications can lead to dangerously low blood pressure and a higher risk of side effects.
Top 9 Natural Viagra Alternatives Increase Sex Drive Related Articles
It takes from 30 minutes to 1 hour for Viagra (sildenafil) to start working, and the effects will last for about 4 hours. Viagra (sildenafil) is approved to treat sexual dysfunction in men by the U.S. Food and Drug Administration (FDA), but it is sometimes prescribed to women off-label, which means without approval by the FDA. Viagra is an effective viagra tablet sex drug for treating male erectile dysfunction, but it targets sexual performance, not sexual arousal. There is limited evidence that Viagra may be beneficial for women with sexual dysfunction, but the trials have been small and the results inconsistent. These drugs along with Viagra can cause a sudden drop in blood pressure that may trigger a heart attack in some. These drugs give an instant high when inhaled but can cause a dangerous (even fatal) drop in blood pressure if taken together with Viagra. This can produce hot flushes in men, which are very uncomfortable.
- Underlying Health Conditions: Diabetes, hypertension, and high cholesterol are major contributors.
- Neurological Disorders: Multiple sclerosis, Parkinson's disease, and spinal injuries can cause ED.
- Peyronie's Disease: Scar tissue causing curved, painful erections that may require treatment.
- Post-Prostatectomy ED: Common after prostate cancer surgery; nerve-sparing techniques help.
- Low Testosterone: Can reduce libido and erectile quality; requires diagnosis via blood test.
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| Age Range | Lowest Effective Dose | Typical Dose | Max Dose | Notes |
|---|---|---|---|---|
| 18-40 | 50mg | 50-100mg | 100mg | Start with lower dose if sensitive |
| 41-60 | 50mg or 100mg | 50-100mg | 100mg | Adjust based on response |
| 61+ | 25mg or 50mg | 25mg or 50mg | 100mg | Caution with higher doses |
What Is the Female Version of Viagra Called?The FDA approved two versions of female Viagra to treat female sexual dysfunction, which are called flibanserin (Addyi) and bremelanotide.
- Viagra Sildenafil: The most widely used ED medication, effective within 30-60 minutes, lasting 4-6 hours, requires prescription.
- Generic Sildenafil: Affordable alternative to Viagra, identical active ingredient, equally effective, available at pharmacies worldwide.
- Viagra Coated Tablets: Designed for faster disintegration in the mouth, for quicker onset, but consult a doctor before use.
Yohimbine has also been used as a street drug,.. All content on this page has been medically reviewed by: Hassan Thwaini, Clinical Pharmacist and Copywriter, Master of Pharmacy (MPharm) on 30 March, 2026.
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