You have only one tablet so why waste it like that. Find out the active ingredient and how to check for that. The old supply was working great. The new stuff was too strong so which one is correct? You have plenty of supply of the new supply. Take the empty bottle to the old pharmacy as they should should have a record of lot # for the bottle that they filled. Talk to new pharmacy and ask why their product seems to be too strong. Could be their stuff is in error.

Go here to enter the "pill" info and get addtional details.
https://www.drugs.com/imprints.php