Armadillo, what dose of Cyclogest do you take? This is very important because it will make a huge difference as to how will you tolerate it. If you take it in high doses, it's unlikely to be much better than Utrogestan.
Kathleen, it's interesting that Newson Health supply Cyclogest but do you have to take 100mg every day? You would probably feel much better on a lower dose ie 50mg.
When I switched from a cycle to continuous combined HRT, I did a quick calculation and worked out that I was using far more progesterone by taking 50mg every day (18,250 mg per annum) than on a 7 x 100 mg cycle (8,400 mg per annum). I cheated like mad on the cycle and probably took half that amount. Even if you doubled the 7 day progesterone and took 100mg for 14 days each month (16,800 mg per annum) that would still take you below my 50mg every day.
I have found that 50mg progesterone has no side effects.