Leading Online Pharmacy
100% Genuine Products
  Wide Collection of Prescription
& OTC Products
  We Accept eCheck
Secure and Faster payment gateway

Istavel 100mg

94% of 100

Istavel 100 mg Contains Sitagliptin is a prescription medicine used for the treatment of type 2 Diabetes

US$ 0.65

Use this feature to report any issue on product page

More Information
SKU 1012
Generic For Januvia
Generic Name Sitagliptin
Manufacturer Sun Pharma
Pack Size Qty Price Per Pill or Unit Price Cart
50 Tablet/s US$ 0.70 US$ 35.00
100 Tablet/s US$ 0.65 US$ 65.007%US$ 70.00
Write Your Own Review

Istavel 100 mg

Sitagliptin is an oral medicine for diabetes. It is marketed as salt of phosphate under various brand names. It is a very effective medicine to control diabetes by controlling the sugar level. It is mostly recommended for type 2 diabetes mellitus alone or in combination with other medicines that cure diabetes. It is not recommended to treat type-1 diabetes. This drug is either sold alone or in combination with metformin or Thiazolidinediones (other anti-hyperglycemic agents).

Understanding the drug

Sitagliptin is an oral anti hyperglycemic or anti-diabetic drug containing DPP-4 inhibitors (dipeptidylpeptidase-4 inhibitors) that lowers the blood sugar level.

How it works?

Sitagliptin works by lowering the high blood glucose (hyperglycemia). These are the drugs that increase the secretion of insulin and suppress the release of glucagon by pancreas. This drives the blood glucose levels to normal levels. As soon as the blood glucose levels become normal, then the increased changes in the insulin and glucagon stops and further prevents the hypoglycemic situation.

When should you avoid it?

You should not take this drug if you:

  • Are allergic to Sitagliptin or any of the other ingredients
  • Are pregnant or planning to do so
  • Are breastfeeding
  • Have type-1 diabetes mellitus
  • Have diabetic ketoacidosis
  • Have serious infections
  • Have severe kidney problem
  • Have pancreatitis

How much to take?

The usual starting dose for adults is one 100 mg once a day and the drug dosage varies from person to person. Ask the doctor for the correct dose. Do not take the drug without your doctor’s prescription.

What are the strengths available?

The drug is available in the varying strength of the active ingredient Sitagliptin on our website:

Istavel 25 mg tablet

Istavel 50 mg tablet

Istavel 100 mg tablet

The combination drug of Sitagliptin and metformin is also available:

Janumet 50+500mg

Janumet 50+1000mg

Who is the manufacturer?

Istavel and Janumet (brand names) drugs are both manufactured by a well known pharmaceutical company, Merck Sharp and is available on our websites in the packs of 28, 56 and 84 tablets.

How to take it?

Swallow the tablet with one glass full of water. The drug should preferably be combined with meals if possible. This drug should be combined with well balanced calorie controlled diet, rich in fruits and vegetables.

When to take?

Take this drug during the same time each day, this will make you sure that you don’t forget to take the medicine at the correct time.

For how long should it be taken?

It is very important to take the drug exactly as prescribed by the doctor. Continue to take the medicine as long as the doctor recommends you that. Take the medicine about the same the time each day so as to remember when to take the drug. This medicine controls diabetes but does not cure it hence it is needed to be take it for a longer period of time. The doctor will suggest you about the duration you have to take the medicine.

What if you take too much (overdose)?

Too much Sitagliptin may cause harmful side-effects on body this may result in hypoglycemia (low blood sugar).You may require urgent medical help in this situation. Call for doctor or any other medical help in case you feel any of the following symptoms:

  • Back, muscle or  joint pain
  • Abdominal pain ( severe or mild)
  • Headache
  • Nausea
  • Osteoarthritis
  • Constipation
  • Diarrhea
  • Dizziness

If you feel any other alarming symptoms other than the above listed then immediately consult the doctor about the continuation of this drug. In case of emergency call your doctor or visit the nearest healthcare center immediately.

What if you miss the dose?

In case you miss to take the dose, skip the dose and take the next dose on the recommended time period if it’s too late but if it’s less than 1 hour of the meal then take it normally as you would. Do not double up the dose to make up for the missed one.

What are the side effects?

Tell your doctor as soon as possible if you notice any of the following:

  • soreness in the back of the nose
  • Unusual tiredness
  • Low blood sugar
  • Headache and drowsiness
  • Fast heart rate
  • Feeling drunk
  • Headache
  • Constipation
  • Diarrhea
  • Dizziness and trouble concentrating
  • Unusual bleeding or bruising

In such cases you must go for immediate medical help. Do not get alarmed by the list. You may /may not experience all of them. Tell your doctor immediately in the above situations.

Are there any possible drug interactions?

As the drug is associated with weight loss, ask your doctor about the intake of the cholesterol and diabetes drugs. Also consult your doctor about the following drugs such as:

  • Ivacaftor
  • Probenecid
  • Non-steroidal anti-inflammatory drugs
  • Aspirin or other salicylates
  • Sulfa drugs
  • Monoamine oxidase inhibitors
  • Beta-blockers

Ask your doctor to get the full list of the drugs needed to be avoided while taking the drug as they may interfere it and may cause adverse effects. Also tell him about the herbal or OTC medicine that you are taking or you have been taking. Never start a new medicine without the information of doctor.

What are the things to be taken care of?

  • Your blood sugar will need to be checked often
  • Do not consume alcohol
  • Try to involve in any kind of exercise and take a proper diet to keep a check on blood sugar level.
  • Keep a check on your body weight
  • Always keep a source of sugar available with you like a fruit or candy or gel.
  • Keep the drug readily available
  • Never change the dose or schedule of the medicine without doctor’s advice
  • Do not skip meals while taking this drug


You should not take Istavel 100 mg if you are hypersensitive to Sitagliptin or its ingredients. Pancreatitis or inflammation of the pancreas has been reported in patients receiving Istavel.


Before taking Sitagliptin, inform your doctor if you have ever had:

  — Pancreatitis- a disease of the pancreas

  — Type 1 diabetes

  — Any past or present kidney problems

  — An allergic reaction to Sitagliptin

  — Diabetic ketoacidosis- a complication associated with diabetes often accompanied by high blood pressure, nausea, vomiting, and rapid weight loss

  — Gallstones, alcohol dependence, or excessively high levels of triglycerides in your bloodstream


Istavel is less likely to cause hypoglycemia (low blood sugar) because it does not work when your blood sugar is too low. However, hypoglycemia episodes may occur when this drug is combined with insulin or sulfonylurea medicine. Your doctor may prescribe a reduced dose of insulin or sulfonylurea.   


Tell your doctor if you are taking any other medicine. In particular, let your doctor know if you are taking digoxin, which is used to treat irregular heartbeat and other heart diseases. The level of digoxin in your bloodstream may need to be checked if taken with Sitagliptin tablets.


If you are pregnant or breastfeeding, as your doctor for advice before taking this antidiabetic agent. You should avoid taking this medicine during pregnancy if it is unknown if it passes into breast milk. You should not take Sitagliptin if you are breastfeeding or plan to breastfeed.


The most common side effect of Istavel 100 mg is a headache. This is usually temporary and improves with time. Hypoglycemia (low blood sugar) is a possible side effect if you take other medicines like sulfonylurea or insulin. It is important to recognize the symptoms of Hypoglycaemia and know how to deal with it. Contact your doctor if the side effects worry you or if they do not resolve within a few days.   

You must always take this antidiabetic medicine exactly as told by your doctor. Speak to your doctor if you are unsure how to take medicine. The usual recommended dose is 100 mg once a day. If you have renal impairment, your doctor may prescribe a lower dose. You can take this antidiabetic medicine before or after consuming food. Lifestyle modifications such as diet and regular exercise can help your body use its blood sugar better. It is important to stick to the diet and exercise recommended by your doctor while taking Sitagliptin tablets.


If you accidentally take too many tablets, contact your doctor immediately. Be sure to take this medicine as long as your doctor prescribes it until it’s time for your next dose so you will be able to control your blood sugar.


Copyright © 2024 AllDayChemist. All rights reserved.