Find information about common, infrequent and rare side effects of Phentermine-Topiramate Oral. - How hormones affect weight loss - How does body fat change with age? - How to lose weight, stay toned, and have great energy levels during menopause and beyond. Hyperthyroidism & Hypothyroidism. The thyroid, a small gland found in the neck, acts as the control center for your body; hormones secreted by the thyroid help to maintain the brain, heart, muscles, and other organs, and help the body to use energy properly. The active ingredient in Adipex is phentermine hydrochloride, which has chemical activity similar to amphetamines. Adipex has been reported to cause changes in the libido, which have been attributed to the drug's central nervous system effects. Thyroid hormones affect Glucophage and can lead to high blood sugar levels, called hyperglycemia and can make diabetes worse, states …Typically, once thyroid levels are adequate, you should be able to lose the … Levels of these hormones skyrocket during periods of stress, and we know that excess stress disrupts the menstrual cycle, so medications (like phentermine) that simulate a similar stress response could also affect a woman’s period. At the same time slimming and muscle building hormones, like human growth hormone (HGH) and DHEA, decline. Together this creates the perfect storm for female related fat gain and most of it occurs in the mid-section. Not a problem. Phentermine should not cause hormonal issues and will not interfere with the medication you take for hypothyroidism. Please understand that phentermine only works while you are taking it and you must learn to change your diet and exercise patterns or the weight will come back when you stop the drug. Phentermine is a medication that is usedfor weight loss and to treat obesity. It acts as an appetite suppressant and should be coupled with exercise and diet in order to be most effective. Note that birth control pills do not affect anorexigenic effect of Phentermine and for most women they are safe. Besides, a combined use of birth control pills and Phentermine improves the common state of the body and reduces the risk of colon cancer and ovarian cancer.