FTM Testosterone injections - everything you need to know about being on T
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The first thought about testosterone shots can be frightening. Being on T causes many changes, fears, and doubts that are not always reasonable. However, clarity brings peace of mind. Today we'll learn everything about testosterone—what is considered normal while being on T, what changes T therapy brings, things worth considering before starting treatment, tips, and other useful information.
Physical Changes to Expect on Testosterone
Voice Deepening
Your voice will become deeper and less feminine. You can also try voice training exercises to develop a stronger voice.
⏱️ ~1 yearHair Growth
Hair will grow on chest, stomach, back, and face. Beard growth depends on dosage and genetics—may take 3 months to 5 years for final results.
⏱️ 3 months – 5 yearsBottom Growth
The clitoris will become larger and similar to male genitalia. You'll notice more enlargement when aroused.
⏱️ 3-6 months, complete in ~2 yearsMenstruation Stops
Cessation of periods is a significant change. About 84% of patients with 50-70mg weekly doses experience this within 6 months.
⏱️ Within 6 monthsMuscle Growth
Testosterone aids in achieving a more masculine physique. Your arms and legs will become firmer with exercise.
⏱️ 6-12+ monthsBody Shape Changes
Body fat migrates to a more masculine pattern. Chest, thighs, hips, and buttocks become less prominent.
⏱️ 3-6 monthsSkin Oiliness
Oil glands increase production, pores enlarge. Important for those prone to acne—skin may become oilier.
⏱️ 1-6 monthsScalp Hair Changes
Hair thinning or recession may occur, depending on genetics and dosage. The full process may take about 5 years.
⏱️ 6-12 months onsetLibido Changes
Sex drive may increase, and sexual interests may change. Orgasms will feel different—more genitalia-focused.
⏱️ VariableBody Odor Changes
Body odors may become stronger (sweat, urine). You might notice more frequent sweating than before.
⏱️ 1-6 months
What Are the Risks of Testosterone Treatment?
Testosterone therapy can bring many positive changes—defeating gender dysphoria, feeling more comfortable with yourself, and improving overall well-being. Nevertheless, there are risks every trans man should consider:
🚨 Main Risks to Consider
💜 You Won't Be Alone
You will meet your doctor regularly. A medical professional will monitor your physical changes—lipids, blood count, hormone levels. You will not be left alone on your testosterone journey.
Managing Injection Pain
Not every shot will hurt, although some injection pain is normal. It should fade in less than 4 days. If pain lasts longer or is beyond moderate, seek medical help.
💉 Use Two Needles
Use one needle for drawing and another for injecting. Needles become duller after each use, so a fresh needle for injection reduces pain.
📊 Smaller, Frequent Doses
More frequent but smaller injections can be significantly less painful than larger doses every few weeks.
🧴 Let Site Dry
Allow the injection site to dry completely before using an alcohol pad. Otherwise, you'll experience a stinging sensation.
📍 Rotate Sites
Common sites: thighs, arms, hips. Areas with less fat are less painful. Rotate sites to avoid scarring—rest each area for 1-2 weeks.
🌡️ Warm the Testosterone
Run it under warm water or warm with your hands. You can also warm the injection area with a warm compress or bath.
🧘 Stay Calm & Relaxed
Relax your muscles, take deep breaths. Tensed muscles worsen pain. Try calming activities before your shot.
Bleeding & Swelling After Injections
Yes, it's perfectly normal! Many trans men experience bleeding after injections. Only worry if it's followed by severe pain and swelling. The probability of testosterone leaking is minimal—you don't need to repeat the injection.
Z-Track Method: Pull the skin to the side, insert needle, hold for 10 seconds, release skin after withdrawing. This helps avoid bleeding.
Yes, as long as it's moderate. Swelling should disappear or improve within a few days. If it doesn't heal in more than 4 days—seek medical help.
How Long Do You Have to Take Testosterone?
Many trans men continue testosterone treatment throughout their lives. Termination may cause the return of some feminine characteristics.
If ovaries are still functional: Monthly periods will return, which can worsen body dysphoria.
If ovaries are no longer functional: Estrogen and testosterone levels will be below normal, resulting in lower bone mass, hot flashes, and other issues.
There are cases when stopping T is necessary—in such cases, consultation with a medical professional is essential.

Testosterone Treatment Tips & Preparation
We know that FTM testosterone treatment can bring sleepless nights and headaches. When feeling anxious, remember that many FTM guys experience these emotions too. Here are some tips:
Learn as Much as Possible
Knowing everything about possible side effects, physical changes, and the process will help you feel prepared and anxiety-free. Learn about available testosterone types and dosage options.
Prepare for Health Evaluation
Expect to provide personal and family medical history. Prepare for blood samples, pregnancy tests, and age/sex-related screenings. Some may undergo mental health evaluation exploring gender dysphoria.
Take Care of Yourself
Testosterone is a serious medication. Notice any alarming changes in your body, as well as emotional and behavioral changes. Be sure to inject the prescribed dosage and be careful during injection.
Make Important Decisions in Advance
Discuss contraception and fertility plans. Evaluate your current psychological and physical well-being before starting.
⚠️ Disclaimer
We are not medical professionals—we are simply a team of people who want to help the transgender community by providing useful information about testosterone therapy. If you want to start your testosterone journey, you must consult a trained medical professional.