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Buy Generic Viagra Online: Sildenafil Brands, Strengths and Price
A plain guide to generic sildenafil: what the brand names mean, which strength your doctor may choose, what drives the price and how to order safely.
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If you want to buy generic Viagra online, you will quickly meet a long list of names: Cenforce, Fildena, Vaigra, Bawree and many more. They can look like different medicines, but they all contain the same active ingredient, sildenafil citrate. This guide explains what those brand names mean, which strengths exist, what drives the price and how to order safely.
We keep it practical, whether you are reading in the UK, Canada, Europe or the US. By the end you should know how to read a sildenafil product page, how to match it to your prescription and what to ask your doctor before you place an order.
Key takeaways
- Generic Viagra is sildenafil citrate. The names on the box are trade names chosen by each maker.
- Standard strengths are 25 mg, 50 mg and 100 mg. Your doctor chooses the strength, often starting at 50 mg.
- Sildenafil is taken about 1 hour before sex, no more than once a day, and lasts around 4 hours.
- Never combine it with nitrates, “poppers” or riociguat.
- Price depends on strength, pack size and delivery, not on the active ingredient being different.
- A valid prescription is required for every order of a prescription medicine.
What is generic Viagra?
Viagra is the original brand name for sildenafil citrate, a medicine for erectile dysfunction (ED). Once the patent on the brand ended, other makers were able to produce sildenafil too. Each one gives its tablet a trade name. That is why you will see Cenforce 100, Fildena 100 or Vaigra 100 when you look for generic Viagra online.
Sildenafil belongs to a group called PDE5 inhibitors. It relaxes the blood vessels in the penis so more blood can flow in when you are sexually aroused. It does not cause an erection by itself, and it does not raise sex drive. Some men also know sildenafil from its use in a lung condition called pulmonary arterial hypertension, but that uses a different dosing plan and is a separate prescription.
Trade names vs active ingredient
The trade name tells you who made the tablet. The active ingredient and strength tell you what it does. When you compare products, look for two lines on the page: “sildenafil citrate” and the strength in mg. If those match your prescription, the trade name is mostly a matter of preference, tablet shape and availability. Our article on generic Viagra brands looks at the common names in more detail.
How to take sildenafil
Sildenafil is taken “on demand”, not every day.
- Timing: take one tablet about 1 hour before sex. It can start working from around 30 minutes.
- How long it lasts: about 4 hours. Read more in how long does sildenafil last.
- Food: a heavy or high-fat meal can delay the effect. A light meal is better.
- Strength: 25 mg, 50 mg or 100 mg. Doctors often start at 50 mg, then go up to 100 mg or down to 25 mg depending on effect and side effects. Older men and people with some liver or kidney problems may be started on 25 mg.
- Limit: no more than one dose in 24 hours.
Sexual stimulation is still needed. Many men find it takes a few tries, with the right timing, to see the full effect.
Sildenafil or tadalafil?
Tadalafil (the active ingredient in Cialis) is the other common ED medicine. It lasts much longer, up to 36 hours, and is less affected by food. Sildenafil suits men who prefer a shorter window and like to plan ahead. Your doctor can help you decide which fits your life and health better.
Is sildenafil safe for you?
Before you buy generic Viagra online, make sure a doctor has checked that it is safe for you. Do not take sildenafil if you:
- Use any nitrate medicine for chest pain, such as GTN spray, or isosorbide tablets.
- Use “poppers” (amyl nitrite or similar).
- Take riociguat.
- Have had a recent heart attack or stroke, or have severe heart disease.
- Have very low blood pressure.
- Have had sudden vision loss from reduced blood flow to the optic nerve, or have retinitis pigmentosa.
Interactions
Tell your doctor about all your medicines. Care is needed with alpha-blockers (for blood pressure or prostate symptoms), some HIV medicines, some antifungal and antibiotic medicines, and any other ED treatment. Grapefruit juice and a lot of alcohol can also change how sildenafil affects you.
Side effects and when to get help
Common side effects are headache, flushing, indigestion, a stuffy nose, dizziness and a brief blue tint to vision. These usually fade within a few hours.
Get urgent help for chest pain, an erection lasting more than 4 hours, sudden loss of sight or hearing, or signs of an allergic reaction. Tell the medical team you have taken sildenafil.
Buy generic Viagra online: why generic costs less
The company behind a new medicine pays for years of research, trials and marketing, and the brand price reflects that. A generic maker produces an active ingredient that is already proven, so it avoids most of those costs. Several makers compete, which keeps prices fair.
A generic sildenafil tablet contains the same active ingredient at the same strength as the brand. The colour, shape and inactive ingredients can differ. That is the main reason people choose to buy Viagra online in generic form: the medicine works the same way, without the brand-name overheads. A lower price should never mean skipping a prescription or a doctor’s check.
What affects the price when you buy generic Viagra online?
We do not list prices here because they change with stock and options. Instead, here is what moves the price up or down.
| Factor | How it changes the price | What to check |
|---|---|---|
| Strength | 100 mg tablets can cost a little more each than 50 mg or 25 mg. | The strength matches your prescription. Do not split tablets unless your prescriber says so. |
| Pack size | Bigger packs usually lower the cost per tablet. | How many doses you will really use before your next review. |
| Trade name | Different makers set different prices for the same ingredient. | The page says “sildenafil citrate” and the right mg. |
| Form | Tablets, chewables and jellies can be priced differently. | Which form your doctor is happy for you to use. |
| Delivery | Destination and shipping method change the total. | Delivery time and tracking for your country. |
For a closer look at cost, see our sildenafil price guide.
Our generic sildenafil tablets
All of the products below are sildenafil citrate 100 mg tablets. Browse the full range in our men’s health category.
- Cenforce 100 – sildenafil citrate 100 mg, a widely known generic for Viagra.
- Fildena 100 – sildenafil citrate 100 mg tablets.
- Vaigra 100 – sildenafil citrate 100 mg tablets.
- Lovegra 100 – sildenafil citrate 100 mg tablets.
- Bawree-100 – generic sildenafil 100 mg tablets.
If your doctor has prescribed 25 mg or 50 mg, choose a product in that strength rather than a 100 mg tablet. Our wider guide to buying sildenafil online covers more options.
How to buy generic Viagra online safely
- Get a valid prescription. See your doctor and talk about your heart health and other medicines. A valid prescription is required for every order of a prescription medicine.
- Check the strength. Make sure the product says sildenafil citrate and the same mg as your prescription.
- Check the pack and quantity. Count the tablets per pack and order only what your prescription covers.
- Plan for delivery. Orders are shipped worldwide by EMS or registered mail in discreet packaging. Order in good time. See how to order for each step.
- Tell your doctor. Let them know which generic you use, and report side effects or changes in your health.
New to this? Our guide on how to buy medicine online safely explains the process from start to finish. If you have a question about an order, please contact us.
Frequently asked questions
Is generic Viagra the same as the brand?
It contains the same active ingredient, sildenafil citrate, at the same strength. The tablet may look different and use different inactive ingredients. If you react to an inactive ingredient, ask your doctor or pharmacist to check the product details.
Why are there so many names for generic Viagra online?
Each maker registers its own trade name, such as Cenforce, Fildena or Vaigra. The name does not change the medicine inside. Compare the active ingredient and strength, not the name.
Is a 100 mg tablet stronger than I need?
It might be. Many men do well on 50 mg, and some need only 25 mg. Start with the strength your doctor prescribes and go back to them if it does not work or causes side effects.
Can women take sildenafil for low desire?
Sildenafil is a treatment for erectile dysfunction in men. It is not a proven treatment for low sexual desire in women. Anyone with this concern should speak to their doctor about suitable options.
Can I drink alcohol with sildenafil?
A small amount is usually fine for most people, but heavy drinking can make ED worse and raise the chance of dizziness and low blood pressure. Ask your doctor what is safe for you.
What happens to my details when I buy Viagra online in generic form?
Orders are sent in discreet packaging. We ask for your prescription so the order can be checked against it before it ships. When you buy generic Viagra online from any store, look for one that asks for a prescription and explains how it handles your details.
Looking for other treatments? Buy generic medicine online from our full range, always with a valid prescription.
The information on this page is for general guidance only and does not replace professional advice. Always consult your doctor or pharmacist before starting any medicine. Read our full medical disclaimer.
Medicines mentioned in this guide
All medicines are supplied only against a valid prescription. Prices shown are for the smallest pack.
About this guide
Written by the rxptteam8. We base our guides on official sources such as the NHS, the US FDA, the EMA and MedlinePlus, and we update them when guidance changes. Last updated .