On medication for Diabetes (apart from Metformin)?

You should check with your doctor or nurse before making a significant change to your diet.

On medication for high blood pressure?

A low carb diet can reduce your blood pressure and you will need to keep an eye on this.

Carbohydrates in Alcoholic Drinks

The following two videos from Carbs and Cals detail the amount of carbohydrates in different alcoholic drinks. If you are struggling to loose weight despite reducing carbohydrates remember that alcohol itself provides empty calories which ultimately can cause weight gain.