Side Effects Of Weight Loss Pills

Weight loss pills available in the market work through suppression of appetite centers in the brain. They also stimulate metabolism and inhibit absorption of fat. They are usually combined with high intensity physical exercises as well as a low calorie diet in order to give maximum benefits. Most of them are however controlled substances in many countries due to their ability to increase tolerance as well as the risk for addiction.

These pills are used for short durations and at recommended doses. The risk and severity of side effects is highly dependent on the dose and duration with more severe ones occurring due to prolonged use and at high doses.

The risk of dependency is due to the fact that most of these weight loss pills convert to amphetamine, are derived from amphetamine and have effects similar to those of amphetamine. Tolerance is also a risk as it necessitates the use of progressively higher doses to give the same effects –

Most of these drugs have sympathomimetic action. They increase constriction of blood vessels and as a result can lead to tremors due to muscular excitement, excessive sweating, palpitations secondary to an increased heart rate. They increase the blood pressure and thereby increase the chances of cardiac events such as heart attacks.

They have various side effects on the gastrointestinal system.  They cause a dry mouth due to increased loss of fluids. They may cause diarrhea or constipation in some people. Nausea and vomiting are however their commonest side effects.

They also cause headaches as well as dizziness. Some people have reported easy fatigability, insomnia, nervousness, restlessness and withdrawal. Some of the pills that cause this include Lorcarserin, Phendimetrazine and basically all that work through the central nervous system –

Orlistat works through a different way by inhibiting the absorption of fat in the diet. It is therefore associated with different side effects. This drug limits the absorption of fat and as a result also prevents absorption of the fat soluble vitamins. If they are not supplemented, the person experiences symptoms of their deficiency. Fat soluble vitamins include Vitamin A, D, E and K. The oil that is not absorbed trickles down the digestive system and causes oily spotting. It also causes increased flatulence as well as diarrhea or incontinence.

Weight loss pills are only used to aid the rate of losing weight and should be used with care at the right doses and the right duration.