Just switched from Estrofem Oestradiol (also known as Estrace) to Progynova Oestradiol valerate (tabs) and, aside from about half the cost, still too early to tell. Had cut back to maintenance dose for two weeks due delayed script renewal but, as of three days now, the Progynova seems to be just fine.
After years on the former am pushing a "B" and was hoping a change might further things along! Larger & encased in a harder shell don't think sublingual would be an option.