Its a sympathomimetic amine, which is similar to an amphetamine. It is also known as an “anorectic” or “anorexigenic” drug.

Adipex stimulates the central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite. Adipex is used as a short-term supplement to diet and exercise in the treatment of obesity.

Side Effects may also include:-

Skin abnormalities, insomnia, irritability, hyperactivity, personality changes, and psychosis, difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives.

Symptoms of a Adipex overdose include restlessness, tremor, rapid breathing, confusion, hallucinations, panic, aggressiveness, nausea, vomiting, diarrhea, an irregular heartbeat, and seizures.

A dose taken too late in the day can cause insomnia.

You can not take Adipex, if you have heart disease or high blood pressure, arteriosclerosis, glaucoma or you have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), tranylcypromine (Parnate), or phenelzine (Nardil) in the last 14 days and also If you have history of drug or alcohol abuse.Consult with your doctor if you think you are pregnant or before breast-feeding.

Take phentermine exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water.

Do not take phentermine in the evening because it may cause insomnia.
Do not crush, chew or open any “once-daily” phentermine tablets or capsules. Swallow them whole.

These pills belong to a class of weight loss drugs called appetite suppressants. Tenuate diet pills are marketed as either immediate or sustained release tablets.

Tenuate acts on the brain to stimulate the sympathetic nervous system. It is believed that the appetite suppression seen with these drugs is a combination of this central action and other unknown effects of the drug on metabolism. Tenuate is also known as an anorexiant (which simply means it causes a “lack of appetite”).

Side Effects may also include:-

Restlessness, difficulty sleeping, nervousness, difficulty sleeping or dry mouth, abnormal redness of the skin, blood pressure elevation, blurred vision, breast development in males, bruising, changes in sex drive, chest pain, constipation, depression, diarrhea, difficulty with voluntary movements, dizziness, drowsiness, feelings of discomfort, feelings of elation, feeling of illness, hair loss, headache, hives, impotence, increased seizures in epileptics, increased sweating, increased volume of diluted urine, irregular heartbeat, menstrual upset, muscle pain, nausea, nervousness, over stimulation, painful urination, palpitations, rash, shortness of breath or labored breathing, tremors, unpleasant taste and vomiting.
Tenuate diet pills are not to be used in people with known allergic reactions to this class of drugs (the sympathomimetics), suffering from advanced arteriosclerosis, heart disease, and moderate to severe hypertension, thyroid abnormalities & glaucoma.

It is also not allowed to people who have a history of dependence or drug abuse (Tenuate diet pills have a potential for abuse)or who are taking drugs that act on the brain or the heart and blood vessels. v) under 12 years of age.

These diet pills are not be taken by women who are, or may become, pregnant unless, in the opinion of the physician, the potential benefits outweigh the possible hazards.

Tenuate diet pills are available as two formulations. Immediate release preparations come as 25 mg tablets, 3 of which are taken once daily in the morning. Controlled release preparation comes as a 75 mg tablet, which is taken once a day.The drug should be taken 1 or 2 hours prior to a meal. Late evening dosing should be avoided for fear of causing insomnia.

Xenical is an oral weight loss prescription, which helps obese people loose considerable amount of weight. Diet pills like Xenical help over weight individual’s loose weight and maintain the lost weight. Xenical is usually used in conjunction with a healthy diet and exercise regime. The information regarding the usage of Xenical is available online to reach out to wider number of over weight people. Xenical comes under the class of drugs called lipase inhibitors.

Lipase is the enzyme that breaks down fat for use by the body. Xenical interferes with lipase function, decreasing fat absorption by 30 percent. Xenical attaches itself to natural digestive enzymes and prevents them from breaking down fat. Since undigested fats are not absorbed, there is less calorie intake, which may have a positive effect on weight control.

Dosage
Take this drug as it has been prescribed by your doctor. The recommended dose is one 120-mg capsule by mouth with liquid at each main meal that contains fat. You should take XENICAL up to three times a day in conjunction with a reduced-calorie diet. Each time you take XENICAL, your nutritionally balanced meal should contain no more than about 30% of calories from fat. Take XENICAL during meals or up to 1 hour after a meal. If u miss a meal, you can skip the dose of Xenical. Do not exceed the dose of Xenical.

The Side Effects of Xenical are

• Gas with discharge
• Fatty stools
• Irregular menstrual periods
• Stomach pain
• Swelling
• Hives
• Redness of skin
• Itching
• Fever
• Difficulty breathing
• Chest pain

Missed Dose:
If you miss a dose of xenical, take it as soon as possible. If the dose is nearing your next dose you can skip the dose. But do not take 2 doses at once.

Overdose:
If overdose is suspected, contact your local poison control center or emergency room immediately.

Precautions to be followed

• Inform your doctor if you are allergic to Xenical or any other drug.
• Inform your doctor about the prescription and non prescription drugs you are taking.
• Your doctor should know if have or had health conditions like: bulimia, thyroid disease, gallstones, diabetes and kidney problems.
• Tell your doctor if you are pregnant or plan to become pregnant.

Adderall is an amphetamine used to treat ADD/ADHD. Like many pharmaceutical medications, some of the side effects include loss of appetite and weight loss (particularly in adolescents).

A CNN story has highlighted the ethical concerns surrounding a doctors decision to prescribe the drug for the purpose of weight loss.

Herballife total control a herbal supplement that claims to boost metabolism, give you energy and increase weight loss. Its all-herbal, low-intensity formula is supposed to give you benefits of a fat burning diet pill, without the nervousness and restlessness that some other supplements can give you.Herbalife was involved in the scandal over Ephedra, a supplement that was found to have caused heart problems in some dieters. However, Herbalife adopted a new Ephedra-free formulation in 2004, after the FDA banned the use of Ephedra.