If you are suffering from varicose veins or chronic venous insufficiency in Houston, one of the treatments your doctor may recommend is Venefit™. This minimally invasive procedure uses radiofrequency energy to cause diseased veins to collapse, allowing blood flow to be redirected to healthier veins. If your doctor has suggested Venefit™ treatment for you, here are the answers to some questions you are likely to have.
Quick Answer: Venefit is the brand name for a radiofrequency ablation (RFA) procedure that closes refluxing leg veins, most often the great or small saphenous vein, from the inside. A thin catheter is placed in the vein through a needle puncture, the vein is numbed, and controlled radiofrequency heat seals it shut so blood reroutes through healthy veins. It is done in the office under local anesthesia, usually takes under an hour, and most patients walk out and resume light activity the same day.
Meet your vein specialist
Dr. Syed Raza, MD
Vascular & Interventional Radiology · Founder, Premier Vein & Vascular Center
Fellowship-trained interventional radiologist certified by the American Board of Radiology and the Royal College of Radiologists (UK). Former Chief of Interventional Radiology at UTMB Galveston and Memorial Hermann Memorial City, with 15+ years treating varicose veins, venous reflux and peripheral arterial disease.
What Conditions Does Venefit™ Treat?
Venefit™ is used to treat chronic venous insufficiency that is caused by leaky valves inside the vein walls. When the valves that keep blood from flowing backwards are not working properly, blood that should be going up towards the heart is allowed to pool in the veins. This causes the veins to bulge and become visible through the legs. Over time, the blood flow becomes chronically insufficient, leading a range of symptoms, like swelling, aching, soreness, and fatigue. Venefit™ treats chronic venous insufficiency to restore normal blood flow.
How Does the Procedure Work?
During Venefit™ treatment, a vascular specialist positions a catheter in a diseased vein that transmits heat via radiofrequency energy. The heat causes the vein collapse and close. When this happens, the blood that was becoming stagnant in that vein is redirected by your body to healthier veins. The procedure is usually performed under local anesthesia on an outpatient basis, and patients are able to return home the same day.
What Happens During Recovery?
After Venefit™, you will need to follow a walking regimen to encourage healthy blood flow. Your doctor may recommend that you avoid lifting very heavy objects for a few weeks. Minor swelling or bruising at the site of the procedure is possible. Most people who undergo Venefit™ find that their chronic venous insufficiency symptoms are resolved in as little as one or two weeks. During a follow-up appointment, your specialist will evaluate your recovery and the success of the procedure.
What Is Venefit Radiofrequency Ablation?
Venefit is a trade name for a specific way of performing radiofrequency ablation of a leg vein. The catheter system used in the procedure is widely known as ClosureFast. You may hear doctors use the terms Venefit, ClosureFast, RFA and endovenous radiofrequency ablation more or less interchangeably. They all describe the same basic idea: using controlled heat from inside the vein to close it permanently.
The procedure is designed for the large, straight surface veins that run the length of the leg, chiefly the great saphenous vein on the inner thigh and calf and the small saphenous vein on the back of the calf. When the valves in these trunk veins fail, they feed the bulging branches people recognize as varicose veins. Closing the faulty trunk removes the source of the high pressure. You can read more about how we perform it on our radiofrequency ablation (RFA) treatment page.
Why heat closes a vein
The vein wall is made largely of collagen. When it is heated to a controlled temperature, the collagen shrinks and the wall contracts tightly around the catheter. As the catheter is pulled back in short segments, the vein is sealed along its length. Over the following months the body turns the closed vein into fibrous tissue and gradually absorbs much of it.
Who Is a Good Candidate for Venefit?
Venefit is not chosen based on how veins look. It is chosen based on what the ultrasound shows. You may be a good candidate if:
- A venous duplex ultrasound confirms reflux in the great saphenous, small saphenous or another straight trunk vein
- You have symptoms such as aching, heaviness, swelling, cramping, itching or skin changes
- Varicose veins have persisted or worsened despite compression stockings and lifestyle measures
- You have skin damage or a healed or active venous ulcer linked to reflux
- The vein is reasonably straight and wide enough for the catheter to pass
When another option may be better
RFA may not be the first choice if the vein is very tortuous, lies very close to the skin, or has old clot inside it. It is generally postponed during pregnancy and for people with an active DVT. Those with limited mobility or certain clotting conditions need a more individualized plan. Small branch veins and spider veins are treated with other methods, such as sclerotherapy or phlebectomy.
Venefit Compared With Other Vein Treatments
Patients often ask how RFA stacks up against other options. There is no single best treatment for everyone. The right choice depends on the size and depth of the vein, its shape, your health and your preferences.
| Treatment | How it closes the vein | Anesthesia | Typical use | Practical notes |
|---|---|---|---|---|
| Radiofrequency ablation (Venefit) | Controlled heat from a catheter | Local tumescent numbing | Large, straight trunk veins | Usually mild bruising; compression afterward |
| Endovenous laser ablation | Laser energy from a fiber | Local tumescent numbing | Large trunk veins | Similar results to RFA in most patients |
| Non-thermal ablation (adhesive or chemical) | Medical glue or sclerosant with catheter | Minimal local numbing | Trunk veins, including some near nerves | Fewer needle sticks; compression varies by method |
| Foam sclerotherapy | Injected foam irritates and collapses the vein | None or minimal | Branch and tortuous veins | May need more than one session |
| Ambulatory phlebectomy | Vein removed through tiny nicks | Local numbing | Bulging surface branches | Often combined with ablation |
In our practice, many patients have a combination plan: RFA or another ablation to close the trunk vein, followed by sclerotherapy or phlebectomy for remaining visible branches. Learn more about the alternatives on our endovenous thermal ablation and non-thermal vein ablation pages.
How to Prepare for Your Procedure
Preparation is simple, but a few details make the day go smoothly.
- Medications. Tell us about every medicine you take, especially blood thinners, aspirin and hormone therapy. Do not stop a prescribed blood thinner unless your doctor tells you to.
- Eat normally. Because only local anesthesia is used, most patients can eat a light meal beforehand and stay well hydrated.
- Skin care. Avoid applying lotion to the leg on the day of treatment, and do not shave the area yourself.
- Clothing. Wear loose pants or a skirt that will fit over a bandage and compression stocking.
- Compression stocking. Bring the stocking you were prescribed, if you have one.
- Transportation. Most people can drive themselves home, but if you are given anything to help you relax, arrange a driver.
What Happens on the Day of Treatment
The original article above outlines the basic idea. Here is what the appointment usually looks like from the patient’s side.
- Mapping. The vein is mapped with ultrasound and marked on the skin.
- Access. After a small numbing injection, a needle is placed into the vein near the knee or ankle under ultrasound guidance, and a thin sheath is inserted.
- Catheter placement. The RFA catheter is advanced up the vein to just below the junction with the deep vein system, checked carefully on ultrasound.
- Tumescent anesthesia. A dilute numbing solution is injected along the vein. It numbs the area, squeezes the vein onto the catheter and acts as a protective cushion for the surrounding tissue.
- Treatment. The catheter heats short segments of vein in timed cycles while it is withdrawn step by step. Most people feel pressure or a little warmth, not sharp pain.
- Finish. The catheter is removed, a small bandage is applied and a compression stocking goes on. You walk out on your own.
The whole visit, including preparation, usually takes an hour or a little longer.
Possible Side Effects and Risks
RFA has been used for many years and is considered a safe, well-established treatment. Like any procedure, it has possible side effects, and it is worth knowing what is normal and what is not.
Common and expected
- Bruising and tenderness along the inner thigh or calf
- A tight, pulling sensation as the closed vein firms up, often peaking a week or so after treatment
- Mild swelling of the ankle or calf
- Small lumps or tender cords under the skin where branches have clotted, which fade over weeks
Less common
- Superficial phlebitis. Redness and tenderness over a treated vein, usually managed with walking, compression and anti-inflammatory medicine if appropriate.
- Nerve irritation. Temporary numbness or tingling in a small patch of skin, especially after treatment below the knee.
- Heat-induced thrombus. Rarely, clot extends from the treated vein toward the deep vein. This is why we perform a follow-up ultrasound shortly after the procedure.
- Deep vein thrombosis. Uncommon, but important to recognize early.
Contact us right away or seek urgent care if you notice:
- Increasing swelling of the whole calf or thigh, rather than slowly improving tenderness
- Severe pain that is getting worse instead of better
- Fever, chills, spreading redness or drainage from the access site
- Sudden shortness of breath or chest pain, which needs a call to 911
Life After Venefit: Results and Long-Term Care
Many patients notice their legs feel lighter within the first couple of weeks, as the original article mentions. Visible varicose branches often shrink over the following weeks to months as pressure in them falls. Some branches persist and are best finished with sclerotherapy or phlebectomy.
A closed vein does not reopen in most cases. However, vein disease is often a lifelong tendency, so new veins can develop over the years. Staying active, managing weight, wearing compression during long periods of standing or travel, and returning for an ultrasound if symptoms come back help protect your results.
A typical recovery timeline
- Day of treatment: Walk out of the office, then take a short walk every hour or two while awake. Keep the stocking on as instructed.
- First few days: Return to desk work and normal daily tasks. Some bruising and soreness along the vein is expected.
- Within the first week or so: A follow-up ultrasound checks that the vein is closed and that the deep veins are clear.
- Weeks one to two: The pulling sensation often peaks and then eases. Avoid heavy lifting and strenuous workouts until your doctor clears you.
- Weeks two to six: Bruising fades, most people are back to full exercise, and leg symptoms continue to improve.
- Two to three months: Branch veins are reassessed, and any that remain can be treated with sclerotherapy or phlebectomy.
Everyone heals at a slightly different pace, so treat these as general guideposts rather than fixed deadlines.
Insurance coverage
When an ultrasound documents reflux and you have symptoms, RFA is usually considered medically necessary. Most insurance plans, including Medicare, cover it, though many require a trial of compression stockings first. Our team checks your benefits and helps with the documentation before treatment is scheduled.
How We Evaluate You Before Venefit
- Focused history. We review your symptoms, how long they have been present, previous clots, pregnancies, medications and what you have already tried.
- Examination. We look at the veins, swelling and skin of both legs while you stand, and check pulses.
- Venous duplex ultrasound. Performed in our IAC-accredited vascular lab, the scan measures reflux in each vein and checks the deep veins for clot or obstruction.
- A clear plan. We explain which veins are the source of your symptoms, whether RFA or another method suits them best, and how many sessions to expect.
Choosing a Vein Specialist in Houston for Venefit
Experience with ultrasound guidance matters in any catheter-based vein procedure. Dr. Syed Raza is a fellowship-trained interventional radiologist certified by the American Board of Radiology and the Royal College of Radiologists (UK), with more than 15 years of experience treating varicose veins and venous reflux. If you are considering radiofrequency ablation, our vein clinic in Houston can confirm with ultrasound whether it is right for you. Same-week appointments are usually available, and most insurance plans, including Medicare, are accepted.
Talk With a Specialist at Premier Vein
Have questions about your symptoms or treatment options? Dr. Syed Raza and the team at Premier Vein & Vascular Center can evaluate your concerns and explain your options clearly. Same-week appointments are usually available, and most insurance plans are accepted.
Frequently Asked Questions
Is Venefit the same as radiofrequency ablation?
Yes. Venefit is a brand name for a radiofrequency ablation procedure that uses a catheter, commonly the ClosureFast system, to heat and close a refluxing vein. The terms are often used interchangeably.
Is radiofrequency vein ablation painful?
Most patients feel the small numbing injections at the start and then mainly pressure or mild warmth. Afterward, tenderness and a pulling feeling along the treated vein are common for a week or two and are usually managed with walking and over-the-counter pain relief if your doctor approves.
How long do the results of RFA last?
A vein that has been successfully closed usually stays closed. New varicose veins can still develop over time because vein disease is often a lifelong tendency, so follow-up and healthy habits remain important.
Can both legs be treated at the same time?
Some practices treat one leg at a time, a week or more apart, to keep each session comfortable and allow follow-up scans. Your specialist will recommend a schedule based on how many veins need treatment.
Do I need to wear compression after Venefit?
Most patients wear a compression stocking for a period after radiofrequency ablation to reduce bruising and tenderness. The exact length of time varies, and your doctor will give specific instructions.
What happens to the vein after it is closed?
The sealed vein gradually turns into scar tissue and is partly absorbed by the body over several months. Blood that used to flow backward through it is rerouted into healthy veins that carry it toward the heart.
Trusted Health Resources
- Chronic Venous Insufficiency, Society for Vascular Surgery
- Venous Insufficiency, MedlinePlus Medical Encyclopedia (NIH)
- Varicose Veins and Spider Veins, MedlinePlus (NIH)