GLP-1 Drugs: What They Are, How They Work, and Why India Is Watching Them Closely
By Bajaj Broking Team
April 02, 2026
3 mins read
Market News
Synopsis:
GLP-1 drugs have moved from diabetes treatment to the centre of the weight-loss conversation. This blog explains how these medicines work, why they are used for diabetes and obesity, and the side effects people should know, from nausea and vomiting to digestive discomfort and other potential risks.
For a long time GLP-1 drugs were used specifically for managing type 2 diabetes and discussed mostly in clinical settings. Over the past few years that changed. These medications started being used for weight loss as well, and their availability grew alongside that demand. In India, where access has expanded particularly fast, regulators have begun paying closer attention to how these drugs are being sold and used.
Understanding the Problem GLP-1 Drugs Solve
When you eat, your body breaks food down into glucose and releases it into the bloodstream. The pancreas responds by producing insulin, a hormone that moves that glucose into cells where it gets converted into energy. There is also a second hormone called glucagon, which works in the opposite direction. When blood sugar falls too low, glucagon signals the liver to release more glucose to bring levels back up. In a healthy body, these two hormones work together to keep blood sugar stable.
In someone with type 2 diabetes, that balance breaks down. The body's cells stop responding to insulin the way they should, the pancreas may not produce enough of it, and glucagon keeps driving blood sugar higher regardless. Over time, consistently high blood sugar damages the kidneys, eyes, nerves, and blood vessels. If the condition goes unmanaged for long enough, the consequences can include blindness, kidney failure, heart disease, and amputation.
Obesity adds another layer to this. Fat stored around the abdomen in particular makes it harder for the body to use insulin effectively. A BMI of 25 or above raises the likelihood of developing type 2 diabetes, heart disease, and certain cancers. The two conditions frequently appear together, and each one makes the other harder to manage.
What GLP-1 Drugs Actually Do?
GLP-1 is a hormone the body produces naturally every time you eat. It signals the pancreas to release insulin, holds glucagon back, and slows down how quickly food moves through the stomach. The practical result is that blood sugar stays more controlled and you feel full for longer after a meal.
GLP-1 receptor agonists work by replicating that hormone. They trigger the same responses in the body but stay active longer than the GLP-1 your body produces on its own. So insulin gets released when it is needed, glucagon stays suppressed, digestion slows, and appetite gradually decreases. Over time, people on these medications tend to eat less and lose weight as a result.
That effect on both blood sugar and appetite is why these drugs ended up being useful for two conditions at once. Type 2 diabetes and obesity share enough biological overlap that a single medication addressing both made clinical sense. Semaglutide, liraglutide, tirzepatide, dulaglutide, and exenatide are among the options currently available. Most come as injection pens that patients use at home on a weekly or daily basis, though tablet versions also exist for those who prefer not to inject.
GLP-1 Medications for Diabetes and Weight Loss
Common GLP-1 receptor agonist medications used to treat type 2 diabetes and obesity include Semaglutide (Ozempic, Wegovy, Rybelsus), Tirzepatide (Mounjaro, Zepbound), Liraglutide (Victoza, Saxenda), and Dulaglutide (Trulicity). These medications regulate blood sugar and aid in weight loss.
Generic Name | Brand Name(s) | Primary Use | Administration |
Semaglutide | Ozempic / Wegovy / Rybelsus | Diabetes / Weight Loss | Weekly Injection / Daily Tablet |
Tirzepatide | Mounjaro / Zepbound | Diabetes / Weight Loss | Weekly Injection |
Liraglutide | Victoza / Saxenda | Diabetes / Weight Loss | Daily Injection |
Dulaglutide | Trulicity | Diabetes | Weekly Injection |
Exenatide | Byetta / Bydureon | Diabetes | Twice Daily / Weekly Injection |
Lixisenatide | Adlyxin | Diabetes | Daily Injection |
The Side Effects of GLP-1 Drugs People Need to Know About
Like any medication, GLP-1 drugs come with side effects that are worth knowing about before starting them.
The more common ones include nausea, vomiting, diarrhea, and dizziness. These tend to show up early, especially when someone is just starting the medication or moving to a higher dose. For most people they ease off after a few weeks, but during that initial period they can be uncomfortable enough to interfere with daily routine.
On the more serious end, there is pancreatitis, kidney injury, bowel obstruction, and in some cases medullary thyroid cancer. These outcomes are not common, but they are documented and they are precisely why these medications are not meant to be taken without a doctor's involvement. For people who already have a history of thyroid cancer, pancreatitis, or certain kidney conditions, these drugs may not be appropriate at all.
The risk goes up considerably when someone starts these medications without a proper medical evaluation. The dosage needs to be calibrated to the individual, existing health conditions need to be factored in, and the patient needs to be checked on regularly while on the medication. None of that can happen without a qualified doctor in the picture.
Why India Is Paying Attention Right Now
In India, these drugs have become fairly easy to get hold of. Retail pharmacies, online platforms, wholesalers, and weight loss clinics have all been supplying them, and a growing number of people are accessing them without seeing a doctor first.
The reason is not hard to understand. GLP-1 medications have been covered extensively in global media as an effective way to lose weight, and that coverage has reached Indian consumers. Many people seeking them out are not diabetic. They simply want to lose weight and have heard these drugs can help. The problem is that without a proper medical evaluation, nobody is checking whether the medication is appropriate for them or what risks they might be walking into.
India's Drug Controller General, alongside State Drug Controllers, responded with direct action. In March 2026 an advisory was sent to drug manufacturers telling them to stop running misleading advertisements and any promotions that could push people toward using these medications without a prescription.
In the weeks that followed, 49 businesses across the country were inspected. Online pharmacy warehouses, drug wholesalers, retail pharmacies, and weight loss clinics all came under scrutiny across multiple regions. Inspectors were specifically looking for unauthorised sales, improper prescribing, and misleading marketing. Businesses found to be breaking the rules received formal notices.
In India, GLP-1 drugs can only be prescribed by endocrinologists, internal medicine specialists, and cardiologists. This restriction exists for a clear reason. These are the specialists equipped to properly evaluate whether a patient is a suitable candidate, monitor their progress, and manage any complications that arise.
Further inspections and surveillance are expected to continue. Businesses that do not comply face license cancellation, financial penalties, and legal action.
What This Means for Patients
GLP-1 drugs have genuinely changed outcomes for many people living with type 2 diabetes and obesity. Used correctly and under proper medical supervision, they can make a real difference. That part of the conversation is true and worth acknowledging.
What is equally true is that these are prescription medications with a documented side effect profile. They are not supplements. They are not a casual solution for anyone who wants to drop a few kilograms. And they are not suitable for every person who asks for them. Taking them without a proper clinical assessment does not eliminate the risks, it just means those risks are being taken without any medical support in place.
Anyone thinking about these medications should speak with a qualified specialist first. An endocrinologist, internal medicine specialist, or cardiologist is the right starting point, not a wellness clinic or an online pharmacy. Getting the medication through a legitimate channel with a valid prescription is both a legal requirement and the only way to use it with any reasonable degree of safety.
Published Date :
02 Apr 2026
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Content Partner - Dalal Street Investment Journal Wealth Advisory Private Limited
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