Learn about the potential side effects of L Thyroxine Roche (levothyroxine). Includes common and rare side effects information for consumers and healthcare professionals. Diagnosis. In general, your doctor may test for an underactive thyroid if you are feeling increasingly tired, have dry skin, constipation and weight gain, or have had previous thyroid problems or a goiter. THYROXINE (T4) REPLACEMENT. Hypothyroidism can’t be cured. But in almost every patient, hypothyroidism can be completely controlled. It is treated by replacing the amount of hormone that your own thyroid can no longer make, to bring your T4 and TSH levels back to normal levels. Anorexia and decreased appetite. But please understand that we all react differently to medications. I've known people to LOSE weight on Prozac..so don't take anything as gospel until you've given it a fair trial. When you are shopping for a whey protein, it is critical to find one that does not contain added sugars, fillers, and artificial ingredients. These types of unnecessary fillers can actually detract from your weight loss goals, and are not part of a truly healthy lifestyle. By Paige Dorkin. The thyroid – in its sluggish state – has long been linked to excess padding. Now, it’s also at the centre of an alarming weight-loss trend. Healthplus Organic Selenium, £7.92, superfooduk.com. BEST SUPPLEMENTS FOR FAT LOSS 2. MEDIUM-CHAIN TRIGLYCERIDES. Let's get one thing straight: there are no magical weight loss supplements that. Medications like Thyroid, Cytomel, T3 and T4 are used to manage thyroid conditions, particularly an under-functioning thyroid. While they do cause weight loss, these drugs should not be used to help you lose weight if you have normal thyroid function. Excessive use of L-thyroxine can speed your metabolism and lead to weight loss -- and serious health problems, including an irregular heartbeat, angina, heart attack and a loss of bone mass -- in severe cases it can lead to osteoporosis. Levothyroxine is a synthetic thyroid hormone prescribed to treat low thyroid function, also known as hypothyroidism. Low thyroid function slows down the metabolism and this can lead to weight gain.