Our Technology 2018-11-20T18:28:08+00:00

How it works

Low-Level Laser Therapy (LLLT) is a treatment that uses specific wavelengths of light to interact with tissue in order to help accelerate the healing process. Low-Level Lasers emit photons to stimulate cells to perform specific tasks in the body, such as reducing inflammation and edema, reducing or eliminating pain for a time, and speeding up wound closure.In essence, Low-Level Lasers like the Dog Med Laser teach nerve cells to stop the sensation of pain from reaching the brain.

Visible and invisible light is composed of photons. Lasers devices generate a beam of coherent monochromatic light by stimulated emission of photons from excited atoms or molecules. An example of the action of photons you may be familiar with is photosynthesis, the process by which plants use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Without light, there is no life.

The second example is tanning. The sun’s UV photons stimulate melanocytes (cells found in the layer of skin called the epidermis) to increase production of melanin (this is called melanogenesis) and, in turn, pigmentation.

As in nature, photons delivered by Low-Level Lasers stimulate the cells inside human and animal bodies to perform specific tasks, such as reducing or temporarily eliminating pain, reducing inflammation, and accelerating the multiplication of cells to close non-infected wounds faster.

The science of Photobiomodulation

Photobiomodulation is the strange scientific (and official) word for Low-Level Laser Therapy.

The use of this term is key, as it distinguishes photobiomodulation therapy, which is nonthermal (doesn’t generate heat), from the use of light-based thermal devices used for heating tissues using near-infrared (NIR) lamps.

Learn more about photobiomodulation (PBMT) from the American Society for Laser Medicine and Surgery (www.aslms.org), the world’s largest scientific organization dedicated to promoting research, education, and high standards of clinical care in the field of medical laser applications.


There are numerous examples of light-induced photochemical reactions in biological systems. Our vision is based upon light interacting with photosensitive cells in our retinas called photoreceptors. When light is absorbed by these cells, a photochemical reaction occurs, converting light energy into electrical signals that are transmitted to the visual processing centers of the brain. Vitamin D synthesis in our skin is another example of a photochemical reaction. When the ultraviolet B (UVB) wavelength in sunlight strikes our skin, it converts a universally present form of cholesterol, 7-dehydrocholesterol to vitamin D3.  The negative effects of the absence of light on the human body are also well known. Two examples include seasonal affective disorder (SAD) and lack of vitamin D production leading to rickets.
Photobiomodulation (PBM) is the term used to describe the mechanistic/scientific basis for this photonic specialty and photobiomodulation therapy (PBMT) as the term for its therapeutic application. PBMT was first developed in the 1960s. During the early years, this emerging photonic application was plagued by a number of problems including inconsistent terminology. A number of terms were introduced such as Biostimulation, Cold/Cool Laser, Low-Level Laser therapy, Soft Laser, and Low-Power Laser Therapy. Based on recent consensus in the field, PBM and PBMT are now considered the terms of choice.  In 2015, thanks to the efforts of Dr. Praveen Arany, PBMT was added to the National Library of Medicine MeSH database as an entry term to the existing record of laser therapy, low-level.
In summary, PBM and PBMT are accurate and specific terms for this effective and important therapeutic application of light.

What devices are used to treat these conditions?

A suggested definition for PBMT is a form of light therapy that utilizes non-ionizing forms of light sources, including LASERS, LEDs, and broadband light, in the visible and near infrared spectrum. It is a non-thermal process involving endogenous chromophores eliciting photophysical and photochemical events at various biological scales. PBM devices have been cleared for marketing by FDA through the Premarket Notification/510(k) process as adjunctive devices for the temporary relief of pain. These clearances were based on the presentation of clinical data to support such claims.

Description of treatment

In this therapy, a light source is placed near or in contact with the skin, allowing the light energy (photons) to penetrate tissue where it interacts with chromophores located in cells resulting in photophysical and photochemical changes that lead to alterations at the molecular, cellular, and tissue levels of the body. Light induces a complex chain of physiological reactions in diseased and damaged tissues to accelerate wound healing and tissue regeneration, increase circulation, reduce acute inflammation, reduce acute and chronic pain, and help restore normal cellular function. Interestingly, recent research indicates that light can enhance performance in normal tissues and cells.

When should PBMT be used?

The potential applications of PBMT are numerous and being explored experimentally at the basic science, pre-clinical, and clinical level. The current clinical uses are for the relief of pain and inflammation and the treatment of sports injuries. PBMT devices have been approved by the FDA to stimulate hair growth and decrease fat deposits.

Pain Relief

Before using PBMT treatment to treat acute or chronic pain, a provider must diagnose the condition to confirm that the pain is from a neuromusculoskeletal condition caused by aging or injury and that there is no disqualifying condition or contraindication for laser use. For example, if there are visible lesions on the skin, it must first be confirmed that they are not cancerous before the patient can undergo PBMT. Pregnant women also are not good candidates for PBMT since the effects on the fetus are unknown. The treatment parameters and number of sessions needed for PBMT are dependent upon location and cause. PBMT usually requires more than one treatment for optimal pain relief. It may take several treatments for the results to become evident. Spine-Health.com reports that it can take anywhere from eight to 30 sessions for a treatment to be fully effective, and some patients find it necessary to undergo treatment two to four times per week. The total number of treatments needed depends on the condition being treated, the severity of the condition, and each patient’s individual response.

Targeting Inflammation

For inflammation, PBMT causes the smaller arteries and lymph vessels of the body to increase in size, which is called vasodilation. Vasodilation allows inflammation, swelling, and edema to be cleared away from injury sites more effectively. Vasodilation in lymph nodes promotes lymphatic drainage, which also aids in the healing process. Basic research has demonstrated that PBMT can decrease the pro-inflammatory cellular response factors and increase the anti-inflammatory response.

Sports Injuries

PBMT has been adopted as an essential pain management tool by athletic trainers in most major league sports franchises in the United States, as well as by many Olympic teams. Trainers claim that elite athletes make comebacks faster after being injured when PBMT is part of the treatment plan. Major league pitchers, for example, use lasers as part of a normal warm-up routine, and many athletes use them as part of rehabilitation. PBMT is also used to treat the weekend athlete with common sports injuries, such as plantar fasciitis, hamstring pulls, and various muscular sprains.

Success Rates/Potential Complications

Treatment parameters for PBMT were originally established using cells in vitro and in small animal models. These treatment parameters generally had a low irradiance and fluence and worked well for cutaneous applications. However when clinicians began to use PBMT to treat structures that were located deeper in the body, they used these parameters with negative results. A number of negative studies were published and it was concluded that there was inadequate evidence to recommend PBMT for clinical use.  We now understand that these negative studies were due to incorrect device and treatment parameters for transcutaneous treatment of deeper structures. Recent advances in laser therapy devices and more research into the appropriate dosages have dramatically improved the results of PBMT. For treating deep tissues, the wavelength of light used determines the depth of penetration into a tissue. In general near-infrared light penetrates more deeply than shorter wavelengths of light such as red light. Therefore, it is important that a clinician uses the appropriate wavelength of light and parameters to treat a condition. One wavelength and one set of treatment parameters will not be effective for all conditions. Negative side effects have not been reported from the use of PBMT.


DML Technology

The Low-Level Laser DOG MED LASER is a true nonthermal laser using 635 nm red beam laser diodes generating a power of 21.5 milliwatts per diode with frequencies for better results.

635 nm red beams have been in use since the late 1960s and have been proven over and over again to be the best wavelength to deliver cellular stimulation and trigger cellular communication in order to generate positive results for inflammation and pain management and for acceleration of wound closure.

We at Dog Med Laser consider laser diodes to be the most efficient photon delivery medium to stimulate human or animal cells. Dog Med Laser diodes are expected to last many, many years, if used in a normal home environment.

The Myth of Power: Watts vs. Milliwatts

7,000 clinical studies have proven the efficacy of nonthermal Low-Level Lasers to deliver positive effects. Recognized institutions and publications have also vouched for the efficacy of Low-Level Lasers. These include the Wellman Center for Photomedicine at Massachusetts General Hospital, Harvard University, and MIT medical schools. Low-Level Lasers work by stimulating cells to do specific tasks. Cells are fragile organisms, and coaxing them to do work a certain way is tricky. Low-Level Laser photons’ delivery to the cells must respect a few principles in order to generate efficient results. One of these principle is recognized by the scientific community:

Not enough is not enough, and too much is too much.

That is in layman terms the translation of the ARNDT-SCHULTZ dose-response law.

Small doses of energy stimulate functions in living cells with no inhibition. Larger doses of energy initially stimulate, but if the doses increase, they start to inhibit cell functions. Very large doses of energy dramatically stimulate for milliseconds, and then dramatically (and for an extended time) totally inhibit the cells. The ultimate risk is cell death.

“Weak stimuli slightly accelerate vital activity; stronger stimuli raise it further, but a peak is reached, and an even stronger stimuli suppresses it until a negative response is finally achieved.” (Chow and Al, 2006)

The general consensus in the scientific community is that the Arndt-Schultz law applies to Low-Level Laser Therapy Photobiomodulation.

The study “Effect of Pulsing in Low-Level Light Therapy” from the Wellman Center for Photomedicine at Massachusetts General Hospital confirms that “the concept of biphasic dose response, or LLLT ‘hormesis,’ will remain.” This means low levels of laser lights are good for you, but high levels are bad for you.

 Dog Med Laser technology respects the Arndt-Schultz dose-response law.

The Most Efficient Wavelength: Nonthermal LLL

It is proven that infrared wavelengths penetrate deep into tissue, but that does not mean that they are the absolute best. Below: Note the percentage of relative burn-healing after irradiation with different wavelengths: 633 nm is the clear winner (Al Watban et al., 2007). This is the what the DML produces.

The infrared wavelength uses the water chromophores, whereas the visible red 600-670 nm wavelengths uses hemoglobin. Low-Level Laser 635 nm generated photons are transported by blood to the cells that make up tissues.

 Red 635 nm absorption spectra: oxyhemoglobin

 HbO2 Oxyhemoglobin

Cellular Communication

Cells in animal bodies communicate with each other 24/7. This is called cellular communication. Dog Med Laser photon delivery frequencies are designed to stimulate the cells to specific tasks. Naturally, the stimulated cells send the task messages to similar cells, which in turn do the same to other similar cells, etc.

Some studies have shown, for example, that exposing one leg wound to red-laser photons accelerates not only the treated wound’s closure but also the closure of a wound located on the other leg that was never exposed to laser beams.

What matters most is not inches of penetration but instead correct cell communication stimulation.

J. Ty Hopkins et al. (BYU Provo, Utah) demonstrated in 2004 that exposing a patient’s wound to LLLT provoked a similar wound-closure pace in a nonexposed wound located on a different limb. And, at days 6, 8, and 10, follow-up testing revealed that the laser group had smaller wounds than the placebo group for both treated and the untreated wounds. This study demonstrated cellular communication in wound-healing processes using Low-Level Lasers.


We at Dog Med Laser believe that the undisputed efficacy of photons delivered by Low-Level Lasers similar to our Dog Med Laser will help your furry best friends live a better life as they grow older.

Photobiomodulation is the only treatment offering total safety with zero negative effects to your pet or yourself. We are not claiming to be the miracle cure for every pet on Earth. Some pets will react better than others. Keep in mind that you will not see instant relief in the majority of cases. Repeat treatments with cumulative effects are key to success.

It is definitely worth a try, and if you are not convinced, we offer a 90-day return policy.

photobiomodulation therapy clinical studies and research
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