Glatopa is fully substitutable for 20mg branded Copaxone.
Teva’s US sales of 20mg Copaxone have been running at an annualized rate of about $1.1B.
The 20mg product has a volume share among all US Copaxone (20mg + 40mg) of about 35%, but the weekly ASP of the 20mg product is slightly higher than the 40mg product, so the dollar share of the 20mg product is slightly higher than its volume share.