S.T.I.M.™   &  S.T.I.F™ Therapy for the Penis

Superconcentrated Thrombocyte Injections for Men

STIM™ shot was coined by Beverly Hills plastic surgeon, Dr. Tim Neavin, to describe the use platelet rich plasma (PRP) and negative pressure for male enhancement.  PRP contains thousands of growth factors and cytokines. These agents act on vessels and nerves to improve their ability to function.  STIF™  Therapy consists of two components:

  1. Injection of platelet rich plasma (PRP) into the penis
  2. Application of negative pressure to allow PRP to disperse within the tissue

Although every man’s experience from STIM therapy varies, the purpose of STIM therapy is to enhance sensation in the penis, improve ability to achieve erection, and potentially add volume to the penis in both length and circumference by promoting the growth of new tissue.

Platelet rich plasma (PRP) is the platelet (thrombocyte) component  of blood that has been concentrated.  Because it is from your own body, it poses no risk for allergic reaction. PRP is a natural and safe solution.

Platelets stimulate cell proliferation and induce the healing process within tissues.

PRP therapy has been used in various fields of medicine relying on its healing capacity to facilitate the repair of various tissues. Orthopaedic, cardiovascular, ENT, wound healing, and plastic surgeons have been utilizing the potent growth factors in PRP for years.  PRP has recently gained momentum because technology has readily afforded physicians the capacity to prepare PRP quite easily and efficiently in the office.

Blood is drawn from the arm.

drawing of hand with glove holding vial of blood

The blood is then centrifuged to separate the PRP from the other blood elements.

drawing of hand with glove holding vial with blood after PRP and separated the blood from other blood elements


The procedure then starts with the application of topical anesthesia to the area just above where the penis meets the pubic area and along the shaft of the penis.

Injections of lidocaine are then introduced to the pubic area to create a field block to reduce sensitivity to the penis.

drawing of penis with injection points marked in red

After the delivery of local anesthesia, 6 injection points are marked (above).

The tube is then spun at an appropriate speed and duration to concentrate the platelets without inciting injury.  If the tube is spun too fast or too long, the  fragile platelets can fracture. In turn, this may cause a premature release of factors rendering the procedure suboptimal. Thus, not every form of PRP injection is equal.  Experience counts. And, results are dependent on experience. The concentrated platelets is then transferred into a syringe for injections. The areas that are marked receive several cc’s of PRP.

drawing of penis pump before use

Immediately after injection, negative pressure is applied via a penis pump.
drawing of penis pump with erected penis

Generally within 10 to 15 minutes the penis pump will achieve erection of the penis.

With the aid of negative pressure, the growth factors and cytokines released from the platelets can disperse into the corpus cavernosum more evenly.

Possible benefits from STIM therapy include:

  • Improved sensation of the penis
  • Improved ability to achieve erection of the penis
  • Possible straightening of the penis (improved appearance)
  • Enlargement of the penis

Many men report improvements within days after the procedure.  To amplify the response, STIM™ therapy can be performed every 60 to 90 days or until desired results are achieved.

“STIM therapy is a remarkable procedure.  Two weeks after injection, I measured myself and gained half an inch in length, roughly the same in girth.  In addition, both ease in achieving erection and sensation have increased dramatically.  A few days ago which was about 3 weeks after injections, I was able to have sex with my girlfriend 4 times in the same day.  I don’t recall ever being able to do that. I would highly recommend this procedure to anyone experiencing difficulties with sex or just wish to improve their sex life. ” A.S. 28 year old man

Penis Enlargement with Fat Transfer

Superconcentrated Thrombocyte Injections with Fat (STIF™ Therapy)

STIF™ Therapy adds autologous fat to the PRP injection. Fat is collected from the love handles or abdomen and then processed through filters to allow injection through very fine cannulas. This thin fat is often called  micronized fat or nano-fat. Nano-fat contains fat cells, stromal cells, and stem cells. The purpose of fat transfer is not only to add volume to the penis, but to also improve sensation. With the addition of stem cells and PRP, it is possible that the ability to achieve erection may also be enhanced.

Once fat is collected, it is filtered to reduce viscosity and injected with a cannula into the penis. Dr. Neavin delivers the fat just above  Buck’s fascia in the subcutaneous plane. He will inject up to 40 cc or more of fat  with or without the addition of PRP.

Dr. Neavin often performs fat injection to the penis under local anesthesia with the aid of a regional nerve block. In the locations where Dr. Neavin plans to remove the fat, tumescent fluid is injected to anesthetize the region. The most common areas for fat harvest includes the abdomen, love handles, and lower back. Fat harvest can be combined with traditional liposuction to further slim the body. Liposuction of the mons may also impart the illusion of a fuller penis by unmasking it from hidden tissue.

Fat transfer to the penis, like any fat transfer procedure, can yield unpredictable take. While it is certain that 100 percent of the cells will not survive the transfer, over correction is performed to counter this fact. The penis is wrapped for several days and the patient is instructed to massage the penis for weeks.

For more information on this procedure feel free to visit our FAQ and to schedule your consultation with Dr. Neavin, call 310‑858‑8811 or text 323-975-1287

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To schedule your consultation, Simply Call (310) 858-8811 or Text (323) 975-1287.