All the hormones we prescribe are ‘natural’ or ‘bio-identical’ by which we mean they are identical in structure to the naturally occurring hormones produced by your body. This differs from synthetic hormone like drugs found in the contraceptive pill for example and regular hormone replacement therapy, which are not identical in structure to the naturally occurring hormones produced by your body. This is a big difference: natural bio-identical hormones don’t suppress your own ovaries and your body knows how to metabolise them. Because bio-identical hormones replicate your own hormones incredibly closely, we find the side effects which are commonly associated with synthetic hormones typically aren’t experienced with bio-identical hormones.