Thursday 5 January 2017

Bio Identicals

It is fantastic to see that more attention is being paid to the importance of the menopause, estrogen deficiency and its consequences, both in respect to symptoms and later health.

Since publication of the NICE guideline on diagnosis and management of the menopause in November 2015, more clarity has been provided about treatment options, although the information has not yet reached everyone with many women and some healthcare professionals still expressing confusion around benefits and risks of Hormone Replacement Therapy (HRT) in particular.

Sensationalist headlines do little to dispel myths, and indeed are more likely to add to the confusion. However, I do strongly believe that enough evidence has now been provided and thoroughly analysed such that the time has come to view HRT as a very useful option for controlling menopausal symptoms and providing later health benefits with little risk for the majority of women.

HRT is an obvious option to consider when treating menopausal symptoms which are caused by estrogen deficiency, since its aim is to replace estrogen. In women who have not had a hysterectomy, progestogen or progesterone is added to the estrogen to prevent the estrogen stimulating and causing a thickening of the womb lining (the endometrium).

Different types and routes of both estrogen and progestogen are available and the type and route chosen are determined by each woman’s preference, as well as the type of symptoms that she is experiencing, her medical and family history and any other current medication.

Individualisation is essential.

This may appear straight forward so far. However, an increasing concern is the development of practitioners prescribing “compounded bio identical hormones” which are promoted as being natural and individually prepared to best suit the hormonal needs of individual women. The term “Bio identicals” refers to hormones that very closely resemble estradiol, estriol, estrone (all types of naturally occurring estrogen), progesterone, dehydroepiandrosterone (DHEA), and testosterone as produced by the human ovary and adrenal gland. While the message of replacing hormones which are very like the hormones that we produce ourselves until the menopause seems sensible, hormones are being provided by compounding pharmacies which are not standardised or government approved in terms of content, dose and balance between estrogen and progesterone.

Compounding bio identical pharmacies have been practicing in USA for a number of years and have recently appeared in the UK. Investigations in the USA are being reported. In 2001 the Food and Drug Administration (FDA) collected and analysed 29 compounded drugs. Two of the compounded hormone drugs failed analytical tests because of contamination risks.

In 2012 “More” magazine commissioned laboratory tests of bio identical hormones produced by 12 compounding pharmacies. It was found that these hormones were of unreliable potency and would not meet the standards for the FDA requirements for commercially manufactured drugs and in fact because of the variable hormone levels, concern was expressed that endometrial cancer risk could be increased.

When considering the use of HRT, emphasis on risk has been widely publicised over recent years and it is understandable that women may wish to take hormones which are seen to be as natural as possible and closely resemble women’s own hormones.

What is often not realised is that both estrogen and progesterone can be prescribed as standardised, regulated, government approved HRT in ways that very closely mimic our own hormones. These preparations which are available with NHS prescriptions could also be described as “bio identical” and are prescribed in approved forms.

The difference between hormones prescribed in compounding pharmacies and those prescribed in approved forms is that while some of the basic hormones used in both settings may be the same, ie estroegn and progesterone, the amounts and balance between estrogen and progesterone are not provided in regulated, approved forms in compounding pharmacies such that the stimulating effect of the estroegn on the endometrium may not be adequately balanced by the progesterone provided.

This has raised concerns about these compounded combinations leading to increased risk of endometrial cancer, and cases have been reported. In approved regulated forms of HRT, the appropriate dose and balance has been thoroughly investigated. Use of the term “bioidenticals” is in itself confusing and misleading and better would be to adopt the terms—government approved, or non-government approved hormone therapy.

Another concern is that compounding pharmacies may recommend blood tests or saliva tests to supposedly determine hormone requirements and to assess response to treatment, all at a cost to the woman. While there are some situations when measuring hormone levels by blood test may be useful, saliva levels are of no benefit and blood tests are rarely helpful or required. Better is to start treatment in standardised doses and measure response by effect on symptoms and presence or not of side effects.

Finally, it should be noted that individualisation is indeed the key and that even the use of natural type estrogen and progesterone in government regulated and approved form may not suit the woman. It is always necessary to be prepared that often changes in type and/or route of hormone therapy may be required to provide treatment which provides benefit while minimising side effects, but at all times regulated, government approved hormones should be used rather than compounded, non-government approved hormones.

Recently published national and international guidelines support this advice with NICE guideline on Diagnosis and Management of Menopause stating “ identical formulations that are compounded for an individual woman according to a healthcare provider’s prescription are not subject to government regulations or tested for safety or quality and purity of constituents, therefore their efficacy and safety are unknown”.

The recently updated International Menopause Society recommendations on women’s midlife health and menopause hormone therapy state that “Prescribing of compounded BHT is not recommended due to the lack of quality control and regulatory oversight associated with these products, together with lack of evidence of safety and efficacy.”


  1. Nice post! I like your post regarding Hormone Replacement Therapy and would like to read your next post. Thanks for sharing. Keep it up....
    Hormone Replacement Therapy Provider

  2. Thanks for the clarification and your post. I have been researching bios and it's been very confusing.

  3. Any tips on revitalising a non existent libido!

    1. Have you had any replies? Im struggling with lack of libido too. I've been on HRT for 12 years

    2. This comment has been removed by the author.

    3. Try Maca or femmenessence maca

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  7. Great Post!! Thanks for sharing this informational post about Hormone Replacement Therapy in Boca Raton.

  8. Interesting article, but I think it is essential to clarify (for avoidance of any doubt) about NHS prescribed HRT, in that most often when consulting a GP to enquire about HRT, the first treatment option offered will usually be estrogen (possibly non bio-identical) and progestogen.

    Progestogen (as opposed to natural progesterone) is synthetic and is not a bio-identical hormone. Additionally, several of the estrogens offered to women by the NHS are also synthetic (such as estrone), or alternatively, may be equine in origin (and therefore,cross-species) and this is clearly not body identical either.

    Many GPs do not even know whether or not bio-identical hormones are available on the NHS. It would be really helpful if doctors could be provided with the information so that they can provide patients with a fully-informed choice when deciding which HRT to take.

    I am currently struggling to get help for menopause problems. I want body-identical hormones, as I firmly believe these are safer. It is very hard to get advice or support regarding my choice, so I am considering going private, despite not really being able to afford to do so.

    Furthermore, I think that the NHS should also be looking at offering women testosterone replacement treatment as part of HRT, if they need it.

    Dr Charles Kingsland, Consultant Gynaecologist at Liverpool Women's Hospital and spokesperson for the Royal College of Obstetricians and Gynaecologists is recently quoted as saying that "any gynaecologist with a serious interest in menopause today advocates the inclusion of testosterone in HRT. This is not mainly about improving sexual desire, although it can have this effect. The main benefits, as shown by clinical evidence is to boost the impact of oestrogen".

    When it is so difficult to get accurate and up-to-date help via the NHS, it is not really surprising that many women are seeking help via alternative routes.

    It seems to me that many women are suffering unnecessarily and this is an area of health that is still being neglected by the NHS. At least there are now NICE guidelines in place for treatment of menopause-related symptoms, but these were only put in place in 2015.

    You may choose to delete this, but I felt that I had to comment, as I can't be the only one out there who is struggling to get NHS help.

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