You will need to call Ratiopharm for a positive ID. Apparently there are a few white round scored tablets imprinted with TEC.
ratiopharm
6975 Creditview Road
Unit 5
Mississauga, ON L5N 8E9
Phone: (905) 858-9612
Toll free: 1 800 266-2584
Fax: (905) 858-9610
Toll free fax: 1 800 881-5175
Please let us know what you find out. Thanks!