According to the studies, the fill effect of the products is unchanged, but 90% of the patients tested said the new products made the treatments more comfortable than the standard formulation.
This allows the company to catch up with Allergan's Juvederm Ultra with Lidocaine product, which has been available in Canada and Europe for several months.
Availability of these products in the USA has not been announced. Hopefully, we'll see these later in 2009. It should be a pretty straightforward approval path with the FDA.
Here in the USA, Prevelle Silk has the combination of lidocaine and HA gel filler - but it is a much less concentrated product than either Restylane or Juvederm. I don't use Prevelle Silk often, as I don't find it is as long lasting around the mouth or smile lines.