"start taking phentermine 30mg in oct, 28 2012-dec, 28. i lost 10lbs. stop taking for 1 month. now i&#039;m back on it. feb 1/13 side effect. dry mouth, chills, blood pressure high. so i&#039;m going to start drinking apple cider vinegar before i take my pill with 8oz water, 1 tablespoon of acv. i feel great."