What is TRT (Testosterone Replacement Therapy)? Forms, Side Effects, and Who is Suitable

What is TRT and When is it Used

TRT (Testosterone Replacement Therapy) is thereplacement of testosterone in individuals who have beenLow testosterone.confirmed by blood tests and have clear symptoms, suitable when lifestyle adjustments (natural methods) are insufficient — not a doping drug for individuals with normal hormone levels

Forms of TRT

Injection — injected into the muscle every 2–3 weeks (or according to the type of medication), most commonly used
Gel — applied to the skin daily, be cautious of contact transmission to others
Patch — Daily skin patch

The doctor selects the form based on lifestyle, hormone levels, and response, along withperiodic monitoring

Side effects and precautions

TRT is safe when under medical supervision, but there are things to watch out for: increased red blood cells (blood tests required for monitoring), acne/oily skin, stimulating the prostate, edema, andsuppression of sperm productionwhich may lead to infertility, thusnot suitable for those who still wish to have children and those with/suspected prostate cancer

Who is suitable and who should avoid TRT

Suitable: Those who confirm low hormone levels from blood tests and have clear symptoms, and lifestyle adjustments are insufficientShould avoid/exercise caution:Those who still wish to have children, have prostate cancer, high red blood cell count, or uncontrolled heart failure — mustalways have a physician evaluate firstRead the overview at Low Testosterone Guideor consult atMen's hormone restoration services

Frequently Asked Questions (FAQ)

Does TRT need to be done for life?

Not necessarily, it depends on the cause. Some cases where the underlying issue can be resolved, such as weight loss or stopping hormone-suppressing medications, may reduce or stop treatment. However, some individuals who truly do not produce enough hormones may need to continue. Regular follow-up with a physician is recommended.

Does injecting testosterone make it difficult to have children?

It may, because external hormone supplementation suppresses the body's sperm production, making it unsuitable for those who still wish to have children. If you want to have children, you should inform your doctor to consider other options.

Is TRT dangerous?

Overall, it is safe when under medical supervision and regularly monitored, but there are side effects that need to be watched for, such as thickened red blood cells and stimulation of the prostate. Purchasing hormones to inject on your own is very dangerous and should not be done.

Is TRT different from natural hormone enhancement?

Yes, they are different. Natural enhancement (sleep, exercise, weight loss) stimulates the body to produce hormones on its own, suitable for mild hormone deficiency. TRT, on the other hand, is external supplementation for those with significant deficiency and clear symptoms. Physicians often recommend starting with natural methods first.

Comparison of TRT forms (testosterone replacement therapy)

Forms	Usage method.	Advantages	Precautions
Intramuscular injection	Every 2–3 weeks (depending on the type of medication)	Convenient, does not need to be done every day	Hormone levels fluctuate periodically
Topical gel	Apply to the skin daily	Consistent levels	Be cautious of contact transmission to others
Patch	Daily skin application	Easy to use	May cause skin irritation

The information is an estimate for comparison purposes. Results depend on each individual. A specialist should evaluate before making a decision.

Additional frequently asked questions about TRT

How quickly does TRT take effect?

Many people start to feel improvements in energy and libido within a few weeks to a month, while muscle mass and body composition take longer. Hormone levels should be monitored regularly with a doctor.

Does TRT increase heart risk?

The evidence is not yet conclusive, but those with uncontrolled heart disease or high red blood cell counts should be particularly cautious. Using it under a doctor's supervision helps reduce risks. Hormones should not be purchased for personal use.

Is TRT expensive?

It depends on the form and frequency. It is recommended to consult a doctor to assess whether it is truly necessary and to receive a clear quote. At MENdical, initial consultations can be done via LINE.

What happens if I stop TRT?

When stopped, hormone levels often return to what the body can produce on its own, which may be low again if the underlying cause is not addressed. Starting or stopping TRT should be done under a doctor's care to plan appropriately.