Topical Solution to Prevent

Cold Sore Outbreaks

Prevent cold sores by harnessing the power of your immune system. Activate your T-cells and achieve 11-times stronger immune system and 60% fewer cold sore and herpes outbreaks. Don't treat, prevent!

Topical Solution to Prevent

Genital Herpes Outbreaks

Prevent genital herpes by harnessing the power of your immune system. Activate your T-cells and achieve 11-times stronger immune system and 60% fewer cold sore and herpes outbreaks. Don't treat, prevent!

Find the Perfect Dose of

Square-Immune for You

Get a single dose (effects last for three months), an annual supply (4x doses), or subscribe to get a dose every 3 months. We offer a 90-day guarantee—if your symptoms are not better, we will refund you 100%

How It Works

The key ingredient of Square-Immune™ is SADBE (Squaric Acid Dibutyl Ester), a compound that helps train your immune system to fight outbreaks before they even start. 

Apply Square-Immuneâ„¢ topically to the underside of your upper arm once. This creates an immune response in your skin that resets and improves your immune response to the herpes simplex virus that causes cold sores. We recommend reapplying once every 3 months.

Square-Immune™ is not a drug, it’s a topical immune booster that stimulates a natural immune response by activating your T cells. It never enters your body but rather reacts with proteins in your skin to cause an immune response.

Which Size Should You Order?

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Genital Herpes Cold Sores Doses Price
A Single Dose of Square-Immune™ - OR Save 29% with a subscription or 57% with a year-supply! ✅ ✅ 1 Dose $59.99
1-Year Supply of Square-Immune™ - 5 Doses ✅ ✅ 5 Dose $149.00! (Usually $295.00)
Square-Immune™ Subscription - 1x every 3 Months ✅ ✅ 1 Dose Every 3 Months on a Subscription $44.00! (Usually $59.00)

90-day guarantee! If your symptoms are not better after 90 days, we will refund 100%

  • Stronger Immune System

    11x Stronger Immune System
    60 Days After First Application

  • Fewer and Less Severe Cold Sore Outbreaks

    60% Fewer Cold Sore
    and Herpes Outbreaks —
    and the Fewer Outbreaks are Less Severe.

  • Natural Immune Response

    Stimulates a Natural Immune Response

  • Apply Topically

    Never Enters Your Body.
    Instead Reacts with Proteins in Your Skin

Meet the Founder

Dr. Hugh McTavish

Dr. Hugh McTavish is a scientist, innovator, and problem-solver—driven by personal experience to create solutions that work. A Ph.D. biochemist, he founded Square-Immune after developing a treatment for his own frequent cold sores. When it worked for him, he knew it could help others!

Learn More

Square-Immuneâ„¢ Customers

“

"I wanted to thank you for everything. Your product is working, and even though I just dosed for the first time, the relief that I am getting from Square Immune is above and beyond what I have expected. Words cannot express my gratitude. Bit of my story. I have HSV1 oral, but it is also disseminated. I am a 43-year-old female and all of my outbreaks are hormonal related to my menstrual cycle. This means for the last 5 years (since I contracted HSV1) I have at least 3 outbreaks per month, during ovulation, week before my period and right after my period. Basically, in a month I get about a week where I don't have an outbreak. My outbreaks were so severe at one point, that I considered suicide and still do to this day. My outbreaks have been in my left ear (horrific pain, like someone is stabbing you in the ear while you already have an ear infection), my right eye, throat. I also have neuralgia on the left side of my face where it feels like my face feels like it's about to explode when I have an outbreak. My doctor did not believe me, I have been to ENTs and noone believe that it was caused by HSV1. How did I know that it was HSV1? I was put on daily Valtrex 500 mg a day, and all my symptoms for the last 4 years subsided significantly, where I was able to lead a decent life. I would still get pains in my ear, eye, and left side of my face but they were bareable where I could maintain my job. My outbreaks have started to get bad again in the last year, and even being on 1000 mg per day I was still in a lot of pain. I forgot to mention I also have Herpetic Whitlow on my fingers, hands and feet. I have dosed for the first time on November 30th. I did not have a rash, or scar or a reaction of any sorts, so I thought it did not work, however, since this is my last resort I just figured I would wait and see. Today is 11 days since I have dosed. By now, because I was heading into my menstrual cycle, I would have had at least 1 outbreak, in my ear and all over my fingers and hands. All I got, was 1 little sore on my hand and nothing else. NO sores, no Herpetic Whitlow, no ear ache (I got a tiny spasm but it lasted a second and that was it, usually my ear pain would last 3 hours and I would pretty much be incapacitated during this time), no pain in left side of my face. This has been the best/easiest 11 days of my life in the last 5 years. I almost remembered what it was like to be healthy again, and not be hurting, and not be worried that I will have to leave work, or gym all of a sudden because it feels like I am being stabbed in the ear. So, long story short my friends, I had no reaction after my 1st dose, but it clearly has started to work!!!!! Good luck everyone, don't lose hope yet. Sending you all love."

Anna A.

“

"Before dosing with 2% SADBE, I would get weekly genital herpes outbreaks like clockwork. After 3 weeks from dosing, I noticed my outbreaks were becoming much less severe, and after 6 weeks from dosing, my outbreaks have completely stopped. I now have my life back, and no longer think about HSV on a daily basis. Thank you so much"

Charles O.

“

"After application I had a small outbreak on my lip but it was gone pretty quickly. And the interesting thing is when the outbreak happened the application spot on my arm got a mild rash, which I think shows the immune system is responding to the virus more. I'm definitely buying the year supply!"

Karen T.

“

"I think it's working. I got a bunch of outbreaks a few days after applying but they were much less strong than before and went away faster."

Joseph F.

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"Having constant cold sores made me timid, wanted to hide, and stopped me from delivering the best care I could for my patients due to being embarrassed to look people in the eye. Since taking this medication this torture cycle has stopped for me. Yes, I have gotten small cold sores that only last 2-3 days but it has been nothing compared to how I was living my life previously. Hiding. This is only after one application as well. Mine and my husband's love life has been completely uninterrupted since taking this medication and my professional life has vastly improved as I am not embarrassed to look my clients in the eyes anymore. I couldn't be more grateful for Square-Immune and I hope the everyone can have access to Square-Immune as I know it will also transform their lives as well."

Jennifer T.

Canada

“

"I used to get 3-4 pretty big cold sores every year and they'd take about 2-3 weeks to heal. For the longest time, I thought I had to get the virus out of my body to be healed and I tried everything I could.  Turns out I just needed to RETRAIN my immune system and let it do the work. Since using Square-Immune, I've had zero...yes, ZERO outbreaks.  It's been almost 2 years now.  More importantly, I no longer carry the emotional weight that came along with those outbreaks.   To say I have my life back is an understatement!"

Todd K.

How to Apply Square-Immuneâ„¢

See how easy it is to apply Square-Immuneâ„¢ and start preventing your outbreaks today!

One dose improves immune response for three months so we recommend applying it once every three months. Some customers find that applying additional doses between their regular three-month applications works even better. If you want to apply additional doses, we recommend the 1-year supply, which is a larger amount of Square-Immuneâ„¢ that allows you to apply doses when you want.