There is no single best way to take testosterone. The right method depends on your lifestyle, how you feel about needles, how often you want to think about your treatment, and how your body responds. The FDA-approved routes include injections, topical gels and patches, subcutaneous pellets, nasal gels, and buccal tablets. Each delivers the same hormone but differs in convenience, cost, how stable your levels stay, and what side effects to watch for.
Most men on testosterone replacement are diagnosed after fasting morning blood tests show total testosterone consistently below 264 ng/dL, the lower limit of the normal range for healthy young men. The goal of any delivery method is to bring levels into the mid-normal range and keep them there with as few ups and downs as possible.
Injections: The Most Common Choice
Injectable testosterone is the oldest and most widely used form of replacement therapy, available since the 1950s. The two main formulations, testosterone cypionate and testosterone enanthate, are nearly identical. Cypionate has a half-life of about eight days; enanthate’s is seven to nine days. Both are typically injected every one to four weeks, though many men and their doctors settle on weekly or biweekly schedules to keep levels more stable.
You can inject into muscle (intramuscular) or into the fat layer just under the skin (subcutaneous). Subcutaneous injections use a smaller needle, cause less pain, and studies show patients generally prefer them. The absorption from subcutaneous fat is actually more stable than from muscle tissue because blood flow in fat is more predictable. Subcutaneous injections produce a slower rise to peak concentration (about eight days versus three) without a meaningful difference in overall testosterone levels. Both routes are considered equally effective.
The main advantage of injections is cost. They’re typically the least expensive option. The main drawback is the injection itself, along with the fact that levels naturally rise after the shot and fall before the next one. Splitting a larger dose into more frequent smaller injections (for example, twice a week instead of once every two weeks) can smooth out those peaks and troughs considerably.
Topical Gels and Solutions
Testosterone gels are applied daily to clean, dry skin on the shoulders, upper arms, or abdomen. They deliver a steady stream of testosterone over 24 hours, which closely mimics the body’s natural release pattern and avoids the peak-and-trough cycle of injections. That consistency is a real advantage for men who are sensitive to hormonal fluctuations.
The tradeoff is that only about 10% of the applied dose actually absorbs through the skin. Absorption varies from person to person, so your doctor will check blood levels and adjust the amount you apply. You also need to let the application site dry completely and avoid skin-to-skin contact with others, particularly women and children. Testosterone transferred through casual contact can cause hormonal effects in people who aren’t supposed to be exposed to it. Washing the area or covering it with clothing reduces this risk but doesn’t eliminate it entirely, with transfer possible for up to 12 hours after application. Testosterone from topical preparations can actually remain in the skin for months after use.
Patches (applied to the torso, upper arm, or thigh) are another transdermal option. They provide similar steady-state levels but commonly cause skin irritation at the application site, which limits their popularity.
Subcutaneous Pellets
If you want to think about your testosterone as rarely as possible, pellets are worth considering. Small crystalline pellets (each containing 75 mg of testosterone) are implanted under the skin during a brief in-office procedure, typically in the hip or buttock area. They dissolve slowly and maintain stable testosterone levels for three to six months, with most men getting consistent results for at least four months regardless of how many pellets are placed.
The appeal is obvious: one procedure and you’re covered for months. The downside is that once the pellets are in, the dose can’t be easily adjusted. If your levels come back too high or too low, you have to wait it out or have the pellets removed. There’s also a small risk of pellet extrusion (the body pushing them out) or infection at the insertion site.
Nasal Gel
Nasal testosterone gel is applied inside each nostril three times a day, spaced six to eight hours apart. Each pump delivers 5.5 mg of testosterone. It’s a unique option because it avoids skin transfer risk entirely and doesn’t require needles or procedures.
The main limitation is the dosing schedule. Three applications a day is more demanding than any other method, and missing doses can cause levels to dip. Nasal irritation and runny nose are common complaints. This method works best for men who want to avoid both injections and the transfer concerns of gels, and who don’t mind the frequent dosing.
Oral Testosterone
Oral testosterone has a complicated history. Older formulations (methyltestosterone) were pulled from use in the United States because they caused liver damage. Newer oral formulations use a different compound, testosterone undecanoate, that’s processed through the lymphatic system rather than passing directly through the liver. Clinical trials of these newer versions have not shown clinically significant liver toxicity, and they are now FDA-approved.
Oral testosterone is taken with food, typically twice daily. It’s convenient but still relatively new to the U.S. market, so long-term data is more limited than for injections or gels. Some men experience gastrointestinal side effects, and blood pressure increases have been noted in studies.
Buccal Tablets
A buccal tablet is a small adhesive patch placed against the gum above the upper front teeth, where testosterone absorbs through the lining of the mouth. It’s applied twice daily and dissolves over 12 hours. This method avoids both the liver and the skin transfer issue. However, gum irritation, altered taste, and headaches are common complaints, and the tablet can feel awkward while eating or talking. Buccal delivery has never gained widespread popularity for these reasons.
How Delivery Methods Compare on Stability
Stable testosterone levels tend to produce the best symptom relief with the fewest side effects. Methods that deliver testosterone continuously, like gels, patches, and pellets, generally produce the smoothest blood levels. Injections create more fluctuation by nature, though frequent low-dose injections narrow that gap significantly. One study found that testosterone enanthate maintained more stable therapeutic levels than cypionate after 14 days, thanks to its slightly longer half-life, but the practical difference between the two is small.
Stability matters for more than just how you feel. Higher peaks in testosterone can drive up red blood cell production more aggressively, which is why hematocrit (a measure of red blood cell concentration) needs monitoring. The goal is to keep hematocrit below 54%. Men on any form of testosterone should have bloodwork checked every 6 to 12 months, including hematocrit. Estrogen levels are checked if you develop breast tenderness or swelling, since testosterone partially converts to estrogen in the body.
Choosing Based on Your Lifestyle
- Lowest maintenance: Pellets. One office visit every three to six months.
- Best cost: Injectable testosterone cypionate or enanthate, especially self-administered subcutaneously.
- Steadiest levels without injections: Daily topical gel, applied consistently at the same time.
- No skin transfer risk and no needles: Nasal gel or buccal tablet, though both require multiple daily doses.
- Simplest daily routine: Oral testosterone undecanoate, taken twice daily with meals.
Most men starting testosterone try either injections or gel first, since these are the most studied, most widely available, and easiest for doctors to dose-adjust based on blood work. Your initial choice doesn’t have to be permanent. If one method doesn’t suit your schedule, causes side effects, or doesn’t bring your levels into the target range, switching to another is straightforward and common.