I am bipolar and take 3 150mg of wellbutrinXL daily & 37.5mg of effexorXR 1 daily. I have gained about 18 lbs. in 4 months. I went to a weight loss clinic & they gave me 30mg of phentermine 1 daily B12 shot 1 weekly. Is it safe to take these with my meds for bipolar, i am seen each week by the weight dr.