Growth hormones & Testosterone

Growth hormone, also known as somatotropin, is a peptide hormone that stimulates growth, cell reproduction and cell regeneration in humans and other animals. It is thus important in human development. As more and more people use these, a pain-free way is needed to administer them as well as liquid vitamins used for health and stamina. The Comfort-in™ is the perfect solution for injecting your growth hormones and liquid vitamins.


TRT Testosterone Replacement Therapy

We have two devices suitable for Testosterone:
1. Intramuscular

2. Subcutaneous


PLEASE DO NOT attempt to inject a full dose of 0.5mL as you will find it unpleasant. Multiple injections of 0.25 or 0.3ml at a time is ok.

  1. Practice injecting with saline solution prior to testosterone.
  2. Get familiar with the device, know how to match the strength of the injector to the desired dose.( can send you videos)
  3. After practice with saline, start with small dose of testosterone, no more than 0.2-0.25 at a time.
  4. Practice injecting yourself in different parts of your body, abdomen, inner thighs, outer thighs by yourself, for injecting your shoulder and back of your arm ask for assistance.
  • We sell only the EC certified Comfort-in™ please be aware of fake and copies.
  • We use courier with tracking accompanied with documents , you will receive your order in few days but your country’s customs might charge duties.

Here is a few articles for you about differences between subcutaneous and intramuscular injections of testosterone
Please search google:
Subcutaneous administration of testosterone

New Study: Subcutaneous Administration of Testosterone Safe, Effective Alternative to IM Injections

Information about Testosterone replacement therapy for Men



My parents instilled in me the importance of honesty and hard work in my life. These values and principles kept me out of trouble, which led me to a long and successful career as a law enforcement officer. Good health and agility are required in order to safeguard lives and properties, protect the innocent, prevent crime, and apprehend criminals. Therefore, I regularly exercised several times a week and watched my diet in order to maintain good health. A couple of years shy of retirement, I gained twenty pounds and no longer had the energy to exercise or play sports with my teenage son. I don’t use drugs, smoke, or drink alcoholic beverages, but I drink three or more sodas a day. An annual doctor’s examination, complete with blood work, revealed I have what most middle-aged men have; low testosterone and high blood pressure.

My doctor prescribed testosterone replacement therapy (TRT), blood pressure medication, and ordered me to stop drinking soda. To my disappointment, my insurance company would only cover TRT injections and not creams, which cost about six-hundred dollars a month. Consequently, I was forced to inject 1ml of testosterone with a 25 gauge needle once a week. It took me half an hour to complete my first intramuscular injection as the thought of stabbing myself with a sharp object and self-inflicting pain brought on anxiety and went against my better judgement. I eventually “manned up” and injected the 1 ½ inch long needle into my body, which stung like a bee and left a contusion for two days. I sustained this merciless practice for more than a year. With a few diet changes and TRT, my health improved, but at the same time, I loathed needles. Against my doctor’s advice, I stopped TRT for a few months, until I discovered a needle-free solution with the Comfort-in Jet Injector.

With a new outlook, I resumed my TRT. My doctor prescribed 1ml of testosterone once a week and .5ml of human chorionic gonadotropin (HCG) once a week. I ordered my Comfort-in Jet Injector Kit and upon receiving it, injected the recommended HCG dose subcutaneously, which was painless. In order to stay within my testosterone prescription, I administered two .5ml subcutaneous injections. However, the injections resulted in small lumps with soreness, which took a couple of days to disappear as my body absorbed the oily medication. Subsequently, I decreased my testosterone injections to .25ml each. To my pleasant surprise, they did not result in small lumps or soreness. I’m happy to report that Comfort-in has enabled me to resume my TRT and HCG treatments without needles or pain, and I don’t have to worry about keeping sharps away from family members or have to maintain and dispose of sharps containers.

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