Madeleine Hull
Diet pills, also known as weight management medications, are designed for people with a body mass index (BMI) of 25 and above. They are meant to be used in conjunction with a healthy diet and exercise to help with hunger, cravings, and metabolic preservation. Diet pills work in different ways, such as by suppressing appetite, blocking fat absorption, or increasing feelings of fullness. Some common prescription diet pills include Liraglutide (Saxenda®), Semaglutide (Wegovy®), Naltrexone-bupropion (Contrave®), and Orlistat. While these medications can aid in weight loss, they may also come with side effects such as nausea, constipation, headache, and dizziness. It is important to consult a healthcare professional before taking any diet pills to ensure they are safe and suitable for your individual needs.
| Characteristics | Values |
|---|---|
| Administration | Orally or as subcutaneous injections |
| Effectiveness | Pills and injections are about equally effective |
| Side effects | Nausea, constipation, headache, vomiting, dizziness, insomnia, dry mouth, and diarrhea |
| Usage | Short-term or long-term |
| Mechanism | Suppress appetite, block absorption of fat, increase metabolic rate |
| Prescription | Prescribed to adults with a BMI of 27 or greater, and weight-related health problems |
| Effect | Weight loss of 5% to 10% of starting body weight |
| Precautions | Not to be taken for cosmetic reasons, may have serious side effects |
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What You'll Learn
Prescription appetite suppressants
There are several prescription appetite suppressants available, including Liraglutide (Saxenda®), Semaglutide (Wegovy®), Naltrexone-bupropion (Contrave®), and Phentermine-topiramate (Qsymia®). Liraglutide and Semaglutide are administered via subcutaneous injection, while Naltrexone-bupropion and Phentermine-topiramate are pills. Phentermine, a component of Qsymia®, is also available on its own as Adipex-P or Lomaira and can be prescribed as a tablet, capsule, extended-release capsule, or disintegrating tablet. Other prescription appetite suppressants approved for short-term use include Benzphetamine (Didrex®, Regimex®), Diethylpropion (Tenuate®, Tenuate Dospan®), Phendimetrazine (Prelu-2®), and Phentermine (Dipex-P®, Atti-Plex P®, Pro-Fast®).
It is important to note that prescription appetite suppressants are typically recommended only when modified eating plans and increased exercise have not achieved the desired weight loss. Obesity is generally defined as having a body mass index (BMI) of 30 or higher, and providers may also consider other weight-related health problems when determining if appetite suppressants are appropriate. Additionally, these medications are not a standalone solution and work best in conjunction with a healthy eating plan and regular physical activity.
While prescription appetite suppressants can be a tool in weight management, they are not a solution for everyone. Weight management is a complex issue influenced by various factors, and medication is just one aspect of a comprehensive treatment plan that may also include diet, exercise, and, in some cases, surgery. Furthermore, the effectiveness of these medications varies, and some individuals may find that they need to continue taking them indefinitely to maintain weight loss. As such, it is essential to consult with a healthcare professional to determine the most appropriate course of action for one's specific needs and circumstances.
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Hormones, neurotransmitters and peptides
Diet pills, also known as appetite suppressants, are a type of weight-loss medication for people with obesity. They work by affecting how an individual's body and brain experience appetite and hunger.
Hormones, Neurotransmitters, and Peptides
Hormones, neurotransmitters, and peptides all play a role in appetite and hunger. Prescription appetite suppressants work by blocking or increasing specific hormones, neurotransmitters, and/or peptides.
Hormones
Hormones are chemicals that coordinate various functions in the body. They originate from endocrine system tissues and travel through the bloodstream to target tissues. Examples of hormones that influence appetite include ghrelin, leptin, insulin, and cortisol.
Neurotransmitters
Neurotransmitters (NTs) are chemical messengers that neurons use to communicate with each other and with target tissues. They carry signals from one neuron (nerve cell) to another target cell. NTs like gamma-aminobutyric acid (GABA) and serotonin play a role in appetite regulation. An imbalance in NTs can lead to various disorders, including Parkinson's disease, depression, insomnia, and increased anxiety.
Peptides
Peptides are chains of amino acids, similar to small proteins. One example of a peptide involved in appetite is glucagon-like peptide 1 (GLP-1). Peptides can be naturally produced by the body or synthetically made in laboratories. Some peptides may have benefits for weight management, skin health, and muscle health. Collagen peptides, for instance, are used in supplements and skincare products.
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Side effects and risks
Diet pills and appetite suppressants can have a variety of side effects and risks, and they should be used with caution and only under medical supervision. It is important to consult a healthcare provider before taking any such medication, as they can interact with other medications and cause health problems.
Stimulant-type weight loss drugs, such as phentermine, can lead to insomnia, increased blood pressure, a fast heart rate, restlessness, and drug dependence, abuse, and withdrawal symptoms. They are typically recommended for short-term use (up to 12 weeks) to mitigate these risks. Orlistat (Xenical, Alli) can cause oily spotting, gas, and soft stools, and it is available without a prescription. Diet pills that affect neurotransmitters in the brain, such as bupropion and naltrexone (Contrave), have been linked to headaches, dry mouth, dizziness, and stomach issues like nausea, vomiting, and constipation.
GLP-1 receptor agonists, such as liraglutide (Saxenda), semaglutide (Wegovy, Ozempic), and tirzepatide (Zepbound, Mounjaro), often cause stomach issues like diarrhea, nausea, vomiting, constipation, heartburn, gas, and abdominal pain. These drugs can also cause dizziness, fatigue, indigestion, bloating, and headaches. A small percentage of people may also suffer from a diabetes-related eye complication called retinopathy.
In addition to these physical side effects, there are risks associated with the abuse of diet pills and the development of eating disorders. The intention to take diet pills often stems from an unhealthy body image and an obsession with weight, which can lead to the abuse of supplements and medications. Diet pills can also interact with prescribed medications, causing further adverse side effects.
It is important to note that the use of diet pills does not guarantee long-term weight loss, and many people regain some or all of the weight when they stop taking the medication unless they continue with a healthy diet and exercise plan.
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Weight loss drugs
There are various prescription weight loss medications available, including:
- Liraglutide (Saxenda®), an injectable medication that acts on hormones to make individuals feel full quicker.
- Semaglutide (Wegovy®), an injectable medication that reduces appetite and is meant to be used in conjunction with diet and exercise.
- Naltrexone-bupropion (Contrave®), a pill that combines an opioid receptor antagonist with an antidepressant to decrease cravings and appetite.
- Phentermine-topiramate (Qsymia®), a pill that suppresses appetite.
- Benzphetamine (Didrex®, Regimex®), a short-term appetite suppressant.
- Diethylpropion (Tenuate®, Tenuate Dospan®), a short-term appetite suppressant.
- Phendimetrazine (Prelu-2®), a controlled substance for short-term use.
- Phentermine (Adipex-P®, Dipex-P®, Atti-Plex P®, Pro-Fast®, ProFast), a stimulant and controlled substance for short-term use.
It is important to note that weight loss drugs should be used under the supervision of a healthcare professional and in conjunction with a healthy diet and exercise plan. Additionally, these medications may have side effects, such as nausea, constipation, headache, vomiting, dizziness, and fatigue. Furthermore, weight loss drugs are typically expensive and may not be covered by insurance plans unless they are being used to treat diabetes or other weight-related health conditions.
While weight loss drugs can be effective, they are not suitable for everyone. It is always advisable to consult with a healthcare professional before starting any weight loss program or medication to ensure safety and effectiveness.
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Weight-loss pills vs injections
Modern diet pills can contain a variety of substances, including appetite suppressants, stimulants, and lipase inhibitors. Appetite suppressants work by blocking or increasing specific hormones, neurotransmitters, and/or peptides, which can make you feel less hungry or full faster. Stimulants like benzphetamine can also suppress appetite. Lipase inhibitors like Orlistat work by blocking the enzyme that breaks down fats, thereby inhibiting the absorption of dietary fats.
When it comes to weight loss, there are two main types of medications: pills and injections. Both have their own unique advantages and disadvantages. Weight loss pills are typically more affordable, offer a wider variety of medications, and do not require the use of needles. However, they may need to be taken daily and can have stricter rules regarding the timing of doses in relation to meals. Additionally, weight loss pills may be more likely to cause stomach-related side effects such as nausea, bloating, and abdominal pain.
On the other hand, weight loss injections tend to be more effective and have fewer restrictions on dose timing. They are usually administered once a week, which can make it easier for individuals who don't take medication regularly to stick to a schedule. However, injections obviously require the use of needles, which can be a significant source of anxiety or discomfort for some people. Injection site reactions, such as swelling and pain, may also occur. Furthermore, injections tend to be significantly more expensive than weight loss pills.
One of the most popular and effective weight loss medications on the market is semaglutide, which is available in both oral tablet and injectable forms. It is a glucagon-like peptide-1 (GLP-1) receptor agonist that works by slowing the rate at which the stomach empties, making individuals feel fuller for longer and reducing hunger signals in the brain. Other popular injectable medications include liraglutide (Saxenda) and tirzepatide (Zepbound).
While weight loss injections may generally be more effective, the decision between pills and injections depends on individual preferences and circumstances. It is important to consult with a healthcare provider to determine the most suitable option for your specific needs and to ensure the safe use of these medications.
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Frequently asked questions
Diet pills, also known as weight management medications or appetite suppressants, are medications that can help with weight loss. They work by lessening your appetite or making you feel full faster.
Diet pills are meant for people with health problems related to overweight or obesity. Healthcare professionals use Body Mass Index (BMI) to help decide whether someone might benefit from weight management medications. A BMI of 25-30 is considered overweight, and a BMI of 30 or greater is considered obese.
The side effects of diet pills vary depending on the medication. Some common side effects include gastrointestinal symptoms, headache, dizziness, fatigue, nausea, constipation, insomnia, dry mouth, and diarrhea. In rare cases, serious health problems can occur.
Diet pills are prescription medications, so you must consult a healthcare professional to decide if they are right for you. They will assess your individual needs and risks and may prescribe diet pills as part of a weight-control program that includes a healthy eating plan and regular physical activity.
