I Use Verapamil 180 Mg. SR Currently. My Canadian (home

I use Verapamil 180 mg. SR currently. My Canadian (home country) prescription has been filled and about to run out. I am in Guyana, South America doing volunteer work. The company trying to bring it in for me appears to have failed. I tried on line pharmacys but my Canadian Visa seems to be a problem. Now I have only about 1 week left. Is there any pharmacy in Trinidad that carries 180mg. SR Verapamil ? I can take an plane there if needed to get. Paul