Is Razel CV 20 a safe medicine?

My mother is taking Razel CV20 tablet from July 2017, prior to that she used to take Ecosprin but the doctor changed it to Razel CV. She is diabetic also but the sugar levels are within range for last few years. Sometimes her hands and feet become cold, and she feels weakness.. but becomes normal again after taking 1-2 days rest. These symptoms were not present when she used to take ecosprin. Apart from this, she has no other issue and all her tests are normal. Two of her elder brothers died of sudden stroke around the age of 65-67. These events also have a huge impact on her and produce similar symptoms(hands and feet getting cold, headache etc.,). Can there be any serious condition hidden behind these symptoms? Is it safe to take this medicine? She had high blood pressure before but for last 4-5 years she is normal. High blood pressure, diabetes and stroke runs in her family.