Yeah dude, losing a pound a day is ridiculous, and you say that's SLOW? What you're losing in all likelihood is not so much fat, but muscle. Your body is going into starvation mode, and you will have all sorts of problems including a massive drop in the efficacy of your immune system. When you exercise a lot on top of this, your body is going to burn muscle tissue as well, in addition to putting you in severe fatigue, risk of shock and cardiovascular distress. Please don't do this. If you want to lose weight, figure out your rough daily caloric requirement including basal metabolic rate, and then reduce this by NO MORE THAN 300-500 CALORIES DAILY. Then you can exercise either cardio or weight bearing starting at 30-40 min per day, no more than 5 days per week. Your body needs time to recover, and those days off are critical for muscle building. If you're trying to increase bulk muscle then drink a protein shake after weight lifting, and eat as much protein per day as you can -eggs and bacon for breakfast, chicken for dinner and so on - just stick to low fat meats and very low carb intake (potatoes, rice, bread, refined flour in pastries and others, etc.) Whatever you do, avoid sugar like the plague, especially drinking it. Nothing puts on weight faster than guzzling a pop or two daily that contains a pound of sugar. Drink only water, or after exercising, gatorade or similar with electrolytes.
I really doubt that 0.5 mg Kpin will have much effect on weight one way or the other, but as it's a depressant, I suppose minor weight gain is possible. However you can easily counteract this with the regimen I described above. Oh yeah, if you have access to a workout facility with a pool, I found this one of the best ways to work out and lose weight - do your workout/lifting, drink a protein shake, then cool down with a few laps of swimming and treading water. Swimming is great as it works out all muscles at once, and is good cardio plus the cool water will help you recover from your workout.