Testosterone Therapy in Perimenopause: Who Benefits, How It Works and What to Expect
A complete guide to testosterone therapy in perimenopause. Covers who benefits, UK prescribing, expected effects timeline, dosing, monitoring, and side effects.
Why Women Need Testosterone and Why It Declines
Testosterone is often thought of as a male hormone, but women produce it throughout life and depend on it for many aspects of wellbeing. In women, testosterone is made primarily in the ovaries and adrenal glands. It plays a central role in sexual desire, arousal, energy levels, motivation, cognitive sharpness, and the maintenance of muscle mass and bone density. Testosterone levels decline gradually from a woman's mid-20s onward, and by the time perimenopause begins, many women have already lost a significant proportion of their peak testosterone. This decline accelerates during the perimenopausal transition, particularly in women whose ovarian function fluctuates significantly. Some women experience a more sudden drop, particularly those who have had their ovaries removed surgically (surgical menopause), which can cause an abrupt fall in both oestrogen and testosterone. The decline in testosterone does not always produce obvious symptoms, but when it does, the effects can be profound: persistent low libido that does not respond to oestrogen alone, a flattening of motivation and drive, difficulty concentrating, unexplained fatigue that coexists with adequate sleep, and a diminished sense of wellbeing. Recognising testosterone deficiency as a contributing factor in these symptoms is an important part of comprehensive perimenopause care.
Who Is Most Likely to Benefit from Testosterone Therapy
The strongest evidence for testosterone in women relates to hypoactive sexual desire disorder (HSDD), also called low sexual desire. Multiple randomised controlled trials have shown that testosterone supplementation in physiological doses significantly improves sexual desire, arousal, frequency of satisfying sexual encounters, and satisfaction in post-menopausal women. Evidence is growing for perimenopausal women as well. Beyond sexual function, clinical experience and emerging research suggest benefits for energy, motivation, and cognitive function in women with low testosterone, though the evidence base here is less robust than for libido. Candidates who are most likely to benefit include women who have already been on adequate oestrogen therapy and still experience low libido, women with surgically induced menopause (especially those who had oophorectomy before the natural menopause age), women who report persistent fatigue and flat mood despite optimised oestrogen, and women with a measurably low free testosterone on blood testing. Testosterone therapy is not a first-line treatment for general perimenopause symptoms; it is most appropriate when added to oestrogen HRT rather than used as a standalone treatment.
Prescribing in the UK: What You Need to Know
Testosterone prescribing for women in the UK operates in a somewhat complex landscape. Currently, there is no testosterone product licensed specifically for women in the UK, which means any prescribing is off-label. However, NICE guidelines on menopause (2023) explicitly support the use of testosterone for women with low sexual desire who have not responded adequately to HRT. The most commonly used preparation is AndroGel or Tostran (testosterone gel), which are licensed for men but prescribed off-label for women at a much lower dose. Testim gel and Sustanon injections are also occasionally used. The British Menopause Society (BMS) and the International Menopause Society have both issued guidance supporting testosterone prescribing for appropriate candidates. In practice, access varies significantly by NHS area. Many GPs are not yet confident prescribing it, and women often need to be referred to a menopause specialist or a private menopause clinic to access it. NHS prescribing is available in some areas, particularly through specialist menopause services. Private prescriptions are increasingly accessible through online menopause clinics. A prescription typically follows an initial consultation, baseline blood tests, and discussion of expectations.
Doses, Formulations, and How to Apply
The physiological dose of testosterone for women is approximately one-tenth of the male therapeutic dose. This is an important distinction: supraphysiological doses cause masculinising side effects, while physiological doses in women should restore blood levels to the high-normal female range without significant androgenic effects. A typical female dose from a male-licensed testosterone gel is approximately 0.5 ml of a 1 percent gel daily, though this varies by product concentration. The gel is usually applied to the inner thigh, outer arm, or abdomen, rotating sites to avoid skin reactions. Testosterone cream at compounded concentrations of 1 to 2 percent is prescribed by some specialist clinics and is applied in very small quantities (typically a pea-sized amount) to thin-skinned areas. Absorption is highly individual, which is why blood testing is needed to verify that circulating levels are appropriate. Some women absorb gel very efficiently and need less; others absorb it poorly and may need a higher volume or an alternative formulation. Avoiding washing the application site for at least one hour after applying improves absorption. Avoiding skin contact with partners or children at the application site is important to prevent accidental transfer.
Expected Effects Timeline and Monitoring
Most women who respond to testosterone therapy notice initial improvements in energy and motivation within four to six weeks. Improvements in sexual desire typically take eight to twelve weeks to become fully apparent. Cognitive effects, if present, tend to emerge gradually over a similar timeframe. It is important to have realistic expectations: testosterone does not produce immediate, dramatic changes in most women. Its effects are cumulative and gradual. Blood tests are typically carried out at approximately three months after starting therapy to check total testosterone and, where available, free testosterone levels. The target is a total testosterone level in the upper quartile of the normal female range, not in the male range. If levels are too low and symptoms persist, the dose may be adjusted upward cautiously. If levels are in the normal female range but symptoms have not improved significantly after four to six months, testosterone may not be the primary issue. Ongoing monitoring usually involves blood tests every six to twelve months once a stable dose is established. Hair, skin, voice, and general wellbeing are also reviewed clinically at each review. Liver function monitoring is not required for transdermal preparations as they bypass first-pass metabolism.
Side Effects and Safety Considerations
At physiological female doses, significant side effects from testosterone therapy are uncommon. The most commonly reported are mild and reversible: slight increase in body or facial hair (usually fine and sparse), minor acne, or a small change in skin oiliness. These are dose-related and typically resolve or improve if the dose is reduced. Voice deepening and clitoral enlargement are rare at correct female doses and are signs of supraphysiological dosing that requires prompt dose reduction. It is important not to extrapolate from male testosterone literature when evaluating side effects in women, as the doses used are entirely different. On the safety front, testosterone at female physiological doses does not appear to carry cardiovascular risk, and there is no good evidence linking it to an increased risk of breast cancer, though long-term data are less extensive than for oestrogen. The BMS position statement notes that current evidence is reassuring and that the risk-benefit profile is favourable for appropriate candidates. Women with hormone-sensitive cancers should discuss testosterone with their oncologist before considering it. Overall, testosterone therapy, used properly and monitored carefully, is a well-tolerated addition to the HRT regimen for women who need it.
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