Testosterone Cream vs Injections: Which TRT Method Is Better for Men?

There is no objectively better TRT delivery method. Anyone who tells you otherwise is either selling something or hasn't read the literature carefully enough. The right choice between testosterone cream and injections depends on your SHBG levels, your lifestyle, how your body actually metabolises testosterone, and what side effect profile you can tolerate day to day.

That said, there are clear patterns. Men with high SHBG often do better on injections. Men with young children at home have good reason to avoid transdermal options. Men who hate needles obviously lean toward cream. These aren't arbitrary preferences. They reflect real pharmacological differences between the two delivery methods.

This article lays out the actual clinical data so you can make an informed decision, rather than going with whatever your clinic defaults to or whatever sounds easiest.

The core pharmacology: why delivery method matters

When you inject testosterone enanthate or cypionate, you get a pronounced peak followed by a steady decline. That peak-trough pattern is a defining feature of injectable TRT, and it sits at the centre of most of the debates about injections versus other methods.

Transdermal cream and gel work differently. Because you're applying a small amount daily, levels stay far more stable, but the absolute ceiling is lower, and absorption varies significantly between men depending on skin thickness, body fat, and SHBG.

This isn't a case of one being better designed than the other. They're genuinely different delivery profiles, and the best one for you depends on what your body does with each.

How injections work

The most common injectable forms in the UK are:

• Testosterone enanthate (Sustanon 250 contains this alongside other esters), half-life of roughly 4.5 days
• Testosterone cypionate: half-life of roughly 8 days, slightly smoother curve
• Sustanon 250: a blend of four esters designed to produce a faster initial rise and longer sustained release

Injections are typically given intramuscularly (IM) into the glute or thigh, or subcutaneously (subQ) into the abdomen. SubQ injections are increasingly popular for self-administration. They're less painful, easier to do alone, and produce a marginally slower absorption rate which smooths the peak slightly.

Standard dosing is weekly or every two weeks, though many men split their weekly dose into two injections to reduce the trough effect. Your SHBG level influences how you feel in that second week, more on that below.

How testosterone cream and gel work

Testogel, Tostran, and compounded testosterone creams are applied daily to the skin, usually the upper arms, shoulders, or inner thighs. The testosterone absorbs transdermally and enters circulation gradually.

The result is stable serum levels without significant peaks or troughs. Levels rise modestly after application, plateau across the day, and then decline slowly overnight, the next morning's application restores them.

The catch is absorption variability. Skin thickness, hydration, application site, and individual biochemistry all affect how much gets through. Some men absorb transdermal testosterone efficiently and achieve good therapeutic levels. Others absorb poorly regardless of dose, and no amount of optimisation gets them where they need to be.

Your SHBG level interacts with this significantly. Your SHBG level matters more than most men realise, read our full explanation of what SHBG is and how it affects your TRT results.

Head-to-head comparison

What the research actually shows

The SHBG question

SHBG, sex hormone binding globulin, binds to testosterone in the bloodstream, rendering it biologically inactive. Only free testosterone and albumin-bound testosterone are bioavailable.

Men with high SHBG have more of their total testosterone locked up and unavailable. This creates a problem with transdermal delivery: if you're already starting from a position where a large proportion of your testosterone is being bound and inactivated, transdermal methods that produce moderate, stable levels may not deliver enough free testosterone to achieve therapeutic effect.

Injections, by contrast, produce peaks high enough to temporarily saturate SHBG binding capacity, resulting in more free testosterone entering circulation. This is why high-SHBG men often respond substantially better to injections than to cream or gel, even when total testosterone levels look comparable on paper.

Before settling on a delivery method, understand your baseline SHBG. Understanding your testosterone blood test results covers exactly how to read these numbers correctly.

The haematocrit issue

One of the more clinically significant differences between methods is haematocrit impact. Testosterone stimulates red blood cell production, and the magnitude of that stimulus correlates with peak serum levels. Because injections produce higher peaks, they tend to produce a greater rise in haematocrit (the proportion of blood made up of red blood cells).

Elevated haematocrit increases blood viscosity and raises the theoretical risk of cardiovascular events. Most TRT clinics flag haematocrit above 52–54% as requiring intervention, either a blood donation, dose reduction, or a switch to a delivery method with a lower peak profile.

If your haematocrit is already sitting at the higher end of normal before you start TRT, cream or gel is the more conservative choice. If your levels are normal and you tolerate injections well, this is less of a practical concern, but it's worth monitoring.

The compliance question

On paper, the stability argument for cream is compelling. In practice, daily compliance is genuinely harder for some men than weekly injections.

Adam's Take

The "testosterone rollercoaster" gets discussed a lot, and it is a real thing: I've spoken to enough men who describe feeling notably worse in week two of a biweekly injection cycle to take it seriously. But it's not universal. Plenty of men on weekly injections never notice a trough at all, and for them the stability argument for cream is largely theoretical. The real advantage of cream is if you genuinely feel those peaks and troughs, or if you have clinical reasons (haematocrit, transfer risk) to avoid injections. Otherwise, a weekly or twice-weekly injection protocol solves the trough problem without any absorption variability concerns.

Daily cream application also requires consistent timing, avoiding swimming or showering for a few hours post-application, and being careful about skin contact with children or partners. None of these are insurmountable, but they add friction that doesn't exist with injections.

Who should choose what: a practical decision framework

Choose injections if:

• Your SHBG is elevated (above 40–50 nmol/L)
• You want a set-and-forget protocol (weekly or twice-weekly)
• You don't have young children who could be exposed to cream
• You're comfortable with self-injection (it's genuinely straightforward with proper technique)
• You've tried cream and haven't achieved adequate serum levels

Choose cream or gel if:

• You have a strong aversion to needles
• Your haematocrit is already elevated or trending upward
• Your SHBG is normal-to-low and you absorb transdermally well
• You prefer a daily routine and consistent hormone levels
• You don't have children at home, or can reliably prevent any transfer risk

Worth discussing with your clinic:

• Splitting injection doses (e.g. two smaller injections per week) is often a better solution than switching to cream if your only concern is peak-trough fluctuation
• SubQ injection technique is considerably easier than IM for self-administration and produces a slightly smoother absorption curve
• Some men do well on a hybrid approach initially, cream while building confidence with TRT, then switching to injections if transdermal response is inadequate

For a full review of UK clinics offering both methods with proper blood monitoring, see our guide to the best TRT clinics in the UK.

Getting started with TRT in the UK

If you're considering TRT, or you're already on treatment and want to review your delivery method, a UK clinic that offers both options is worth the investment. NHS provision of TRT remains inconsistent, comparing NHS TRT versus private TRT is worth doing before you decide how to proceed.

Lola Health is one of the UK clinics offering both injectable and transdermal protocols, with blood monitoring built into their programmes. Initial consultations start from £150 and include a clinical assessment to help determine which method suits your profile.

Monitoring whichever method you choose

This part doesn't change based on delivery method. Once you're on TRT, you need regular blood tests covering:

• Total testosterone (and ideally free testosterone): to confirm you're in range
• SHBG: to understand bioavailability
• Haematocrit and haemoglobin: to catch elevated red blood cell production early
• PSA: prostate-specific antigen, standard monitoring for men on TRT
• LH and FSH: typically suppressed on TRT; useful to track for fertility reasons
• Oestradiol: aromatisation of testosterone to oestrogen can cause issues at higher doses

Every 3 months for the first year, then every 6 months once stable. If your clinic isn't monitoring these, find a new clinic. How to choose a TRT provider in the UK covers what good clinical oversight actually looks like.

Medichecks offer a dedicated testosterone monitoring panel that covers all the markers above. Useful if you want to run your own checks between clinic appointments or if you're self-managing.

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Summary

Neither delivery method is inherently superior. Injections produce higher peaks and more pronounced troughs, carry slightly more haematocrit risk, and work better for men with elevated SHBG. Cream and gel produce stable, moderate levels, carry a small transfer risk, require daily compliance, and may not achieve therapeutic free testosterone in men with high SHBG or poor transdermal absorption.

The decision framework is fairly logical once you know your baseline bloodwork. Get your SHBG, haematocrit, and total testosterone tested before you start, factor in your lifestyle and any transfer risk, and choose accordingly. If the first method doesn't work well, switching is straightforward. Most TRT clinics are used to adjusting delivery method based on how patients respond.

The worst outcome is staying on a method that isn't working because you haven't checked whether the alternative would suit you better. That's what blood tests are for.

This article is for informational purposes only and does not constitute medical advice. TRT is a prescription treatment in the UK. Consult a qualified clinician before starting or changing any hormone therapy.