For most men, testosterone injections given once or twice a week work best: they’re the most affordable and the easiest to fine-tune. Gels avoid needles but need daily use and care to avoid skin-to-skin transfer. Pellets last 3–4 months but can’t be adjusted once placed. Oral capsules and nasal gel are newer, needle-free options with their own trade-offs.
Every form of TRT can restore testosterone levels. The real differences are how steady your levels stay, how easily your dose can be adjusted, the side effects to watch, and what fits your routine. How well your treatment is managed (dose, frequency, monitoring) matters more than the method.
Key Takeaways
• Injections offer the most control at the lowest cost, but large, infrequent doses cause bigger highs and lows.
• Gels are needle-free and cause less high hematocrit than injections, but absorption varies and they can transfer to partners and children.
• Pellets are low-effort but fixed for months and need a minor procedure.
• Oral capsules are taken twice daily with food and carry a blood pressure warning.
• Every form of testosterone suppresses sperm production.
TRT Methods Compared
| Method | How often | Dose adjustable? | Main drawbacks | Best for |
| Injections (IM or SubQ) | 1–2+ times a week | Yes, easily | Peaks and troughs; highest rate of high hematocrit | Men who want control and low cost |
| Gels | Daily | Somewhat | Absorption varies; transfer risk to others | Men who want to avoid needles |
| Pellets | Every 3–6 months | No, until the next insertion | Minor procedure; can push out or get infected | Men who want minimal routine |
| Oral capsules | Twice daily with food | Yes | Can raise blood pressure (boxed warning) | Men who want a pill |
| Nasal gel | Several times a day | Yes | Nasal irritation; frequent dosing | Men who want needle-free, short-acting dosing |
| Patches | Daily | Somewhat | Skin irritation is common | Men who can’t use gels |
Sources: Endocrine Society guideline, Testopel label, FDA Jatenzo approval
TRT Injections
Injections are the most common and flexible form of TRT. Testosterone cypionate or enanthate is injected into a muscle (IM) or just under the skin (SubQ).
• How often: once a week causes more noticeable highs and lows; splitting the dose into 2–3 smaller injections a week keeps levels steadier.
• IM vs SubQ: both raise testosterone effectively. In a UC Irvine comparison of 302 men, SubQ autoinjector users reached similar testosterone levels with lower hematocrit (46.3% vs 48.4%) and lower estradiol (Choi et al., conference abstract).
• Pros: inexpensive, easy to adjust based on symptoms and labs.
• Cons: needles, a regular schedule, and the highest rate of high hematocrit. In one study, 66.7% of men on injections reached a hematocrit of 50% or more, vs 35.1% on pellets and 12.8% on gels (Pastuszak et al., 2015).
TRT Gels
Testosterone gel is applied to the shoulders or upper arms each day and absorbed through the skin.
• Pros: no needles, simple routine, and less high hematocrit than injections.
• Cons: absorption varies from person to person and day to day, so some men struggle to reach good levels. Showering or sweating too soon after applying affects absorption.
• Transfer risk: since 2009, the FDA has required a boxed warning on testosterone gels after children were harmed by contact with a parent’s treated skin (FDA boxed warning, 2009). Wash your hands, let the gel dry, and cover the area before skin contact.
TRT Pellets
Small testosterone pellets are placed under the skin of the hip or buttock through a small incision in the office.
• How long they last: the label doses them every 3–6 months; effects usually last 3–4 months (Testopel label).
• Pros: no daily or weekly dosing.
• Cons: the dose can’t be changed until the next insertion, levels fade toward the end of the cycle, and pellets can push out (extrude) or, rarely, cause infection or bruising.
Oral Capsules, Nasal Gel and Patches
• Oral testosterone undecanoate (Jatenzo, Kyzatrex, Tlando): capsules taken twice daily with food. Jatenzo was approved by the FDA in March 2019 with a boxed warning that it can raise blood pressure, so blood pressure must be controlled and monitored (FDA approval).
• Nasal gel (Natesto): absorbed quickly through the nose but needs several doses a day and can irritate the nose.
• Patches: easy to apply daily, but skin irritation at the site is common.
Which Method Gives the Best Results?
All forms can improve energy, libido, mood and body composition once testosterone reaches a healthy range. Injections tend to give the most predictable results because the dose and timing are easy to fine-tune. Gels vary more between people because of absorption. Pellets feel steady early in the cycle but can’t be corrected if the dose is off.
Side Effects by Method
| Method | Common risks | What drives them | How manageable |
| Injections | High hematocrit, mood or energy swings | Large doses, infrequent injections | High: adjust dose and frequency |
| Gels | Skin irritation, low levels, transfer to others | Absorption differences, routine | Moderate |
| Pellets | Extrusion, infection, fading levels | Procedure, fixed dose | Low until the next insertion |
| Oral | Higher blood pressure | The medication itself | Moderate, with monitoring |
Every method needs regular blood tests for testosterone, hematocrit and PSA. If hematocrit rises, see How to Lower Hematocrit on TRT.
Which TRT Method Is Best for Fertility and Hematocrit?
No form of testosterone protects fertility. All of them suppress sperm production, and the Endocrine Society advises against TRT for men planning to conceive in the near term. If fertility matters to you, ask about alternatives such as enclomiphene: see TRT vs Enclomiphene.
For hematocrit, gels and steadier injection schedules carry the lowest risk; large, infrequent injections carry the highest.
TRT Cost: Injections vs Gels vs Pellets
| Method | Typical cost |
| Injections | Lowest medication cost of all methods |
| Gels | Between injections and pellets |
| Pellets | About 500–1,500+ per insertion |
| All-in clinic care (visits, labs, medication) | About 150–500 per month in Las Vegas |
Figures as of August 2026. See TRT cost in Las Vegas and TRT cost in Annapolis for full breakdowns.
Which TRT Method Is Best for You?
| If you value… | Consider |
| Control, consistency and low cost | Injections |
| No needles | Gels, oral capsules or nasal gel |
| Minimal routine | Pellets |
| Lowest hematocrit risk | Gels or frequent small injections |
For most men, injections give the best balance of results, control and cost, because the dose and timing can be fine-tuned as your body responds. Gels and pellets work well for men who strongly prefer no needles or a hands-off routine and accept less flexibility.
Frequently Asked Questions
Are TRT injections better than gels?
For most men, yes: injections are cheaper and easier to adjust. Gels avoid needles and cause less high hematocrit, but absorption varies.
How long do testosterone pellets last?
Usually 3–4 months, occasionally up to 6, per the pellet label.
Do pellets or injections have fewer side effects?
Pellets cause high hematocrit less often than injections but can extrude or get infected and can’t be adjusted. Injection side effects are usually manageable by changing the dose or frequency.
Is SubQ testosterone as effective as IM?
Yes. Comparisons show similar testosterone levels, and SubQ may lead to lower hematocrit.
Is oral testosterone as effective as injections?
Newer oral capsules can restore normal levels when taken twice daily with food, but they carry a blood pressure warning and need regular monitoring.
Can you switch TRT methods?
Yes. Switching is common, for example from gels to injections when absorption is poor. Your doctor will recheck labs after the change.
Find the Right TRT Method With a Doctor
TRTMD Health Clinic builds every testosterone replacement therapy plan around your labs, with ongoing monitoring and dose adjustments. Book a consultation at our Las Vegas or Annapolis clinic, or call (518) 255-8668.
This article is for education and isn’t a substitute for medical advice.
