Hi Hopeful2
I think it can be misleading and potentially problematic for women to attribute change of symptoms to a bottle shape because it could lead women to ignore symptoms for which there could be other causes.
I say this because you mention heavy bleeding. This is very unlikely to be cause buy a different bottle and especially if there were slight differences in batches - could not have such a dramatic effect. If you are bleeding heavily then may I respectfully suggest that you get this checked out by the doctor. I'm not sure of your regime - whether cyclical or continuous but heavy bleeding can have all sorts of reasons. You said you also increased the dose of gel and depending how long ago this could potentially cause bleeding - depending on your circumstances, where you are in menopause etc.
Hopeful2, even if the weather is hot the gel is not supposed to change texture. This problem with Oestrogel is older than me I would try Sandrena until the manufacturer make up its mind, if they have one
I use testosterone gel - prevously Testogel which is the same formulation and manufacturer as oestrogel, and it most definitely changes texture with the hot weather. It stands to reason that gel will be a runnier consistency in hot weather and our skin will also be warmer, affecting absorption to some extent.
I have used Sandrena gel which is generally stickier so may be more stable with temperature - though the gels have all been tested within a wide temperature range from what I recall.
If you are very sensitive to change then I would change gradually but if you think the new batch is not working so well then the best course of action, after getting your bleeding checked out, is surely to increase the dose slightly. Any difference between batches of the same product if there is one, is only likely to be very minor and I think you may experience a greater difference by changing to Sandrena.
All the best
Hurdity x