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This injectable medication is used to enhance blood sugar control in adults with type 2 diabetes, alongside a proper diet and exercise. It works by stimulating insulin production in response to meals while also slowing gastric emptying, which helps regulate glucose absorption. This medication is not suitable for individuals with type 1 diabetes. Treatment usually begins with a low dose, administered twice daily, and may be increased after a month based on a healthcare professional’s recommendation.

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Byetta
£173
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Please note that whilst you are able to request the medicine strength and size required,
we will only be able to send on approval from our in house pharmacist.

Starts at £173.00
Price Comparison

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PackPrice (£)
-10mcg2 x 60 Dose Pre-Filled Syringe316.00
-10mcg60 Dose Pre-Filled Syringe173.00
-5mcg2 x 60 Dose Pre-Filled Syringe316.00
-5mcg60 Dose Pre-Filled Syringe173.00

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What is Byetta?

Byetta contains the active substance exenatide. It is an injectable medication used to improve blood glucose control in adults with type 2 diabetes mellitus (non-insulin-dependent).

How does it work?

Exenatide is a glucagon-like peptide-1 receptor agonist (GLP-1) that exhibits several anti-hyperglycemic actions of glucagon-like peptide-1 (GLP-1). The amino acid sequence of exenatide partially overlaps that of human GLP-1. Exenatide has been shown to bind and activate the known human GLP-1 receptor in vitro, its mechanism of action being mediated by cyclic AMP and/or other intracellular signaling pathways.

Exenatide increases glucose-dependent insulin secretion from the beta cells of the pancreas. As the blood glucose concentration decreases, insulin secretion returns to normal. When exenatide was used in combination with metformin alone, no increase in the incidence of hypoglycemia was observed compared to placebo in combination with metformin that could be due to this glucose-dependent insulinotropic mechanism.

Exenatide suppresses glucagon secretion, which is known to be abnormally elevated in type 2 diabetes. Low concentrations of glucagon lead to decreased hepatic glucose production. However, exenatide does not affect the normal response of glucagon or other hormones to hypoglycemia.

Exenatide slows gastric emptying and therefore reduces the rate at which glucose derived from food appears in the circulation.

What are the benefits of taking it?

Byetta is used with other diabetes medicines, called metformin, sulfonylureas, thiazolidinediones, and basal or long-acting insulin. Your doctor has prescribed Byetta as an additional medicine that helps you control your blood sugar. Continue with your exercise and eating plan. The medicine in Byetta helps your body increase insulin production when your blood sugar is high.

How do I use it and its dosage?

Always take this medicine exactly as your doctor, pharmacist, or diabetes nurse has told you. If in doubt, ask your doctor, pharmacist, or diabetes nurse again if you have any questions.

Two concentrations of Byetta are available: Byetta 5 micrograms and Byetta 10 micrograms. Your doctor may tell you to start treatment using Byetta 5 micrograms twice a day. After using Byetta 5 micrograms twice daily for 30 days, your doctor may increase the dose to Byetta 10 micrograms twice daily.

If you are over 70 years old or have kidney problems, it may take more than 30 days for you to tolerate the dose of Byetta 5 micrograms, so your doctor may not increase your dose.

An injection from your pre-filled pen will give you your dose. Do not change your dose unless your doctor tells you to.

You should inject this medication at any time within 60 minutes (1 hour) before breakfast and dinner, or before your two main meals of the day, which should be about 6 hours or more apart. Do not use this medicine after meals.

You should inject this medication under the skin (subcutaneous injection) into the upper leg (thigh), stomach area (abdomen), or upper arm. If you are using Byetta and insulin, you must inject them separately.

To set the Byetta dosage, you do not need to determine your blood sugar levels daily. However, if you are also using a sulfonylurea or insulin your doctor may tell you to check your sugar levels to adjust the dose of sulfonylurea or insulin. If you are receiving insulin, your doctor will tell you how to lower your insulin dose and will recommend that you check your blood sugar level more frequently to avoid hyperglycemia (high blood sugar levels) and diabetic ketoacidosis (a complication of diabetes that occurs when the body cannot break down glucose because there is not enough insulin).

Treatment with immediate-release exenatide (Byetta) should be started with a 5 μg dose of exenatide administered twice daily for at least one month in order to improve tolerability. The exenatide dose can then be increased to 10 μg twice daily to further improve glycemic control. Doses greater than 10 μg twice a day are not recommended.

Immediate-release exenatide is available as a pre-filled pen with 5 µg or 10 µg doses of exenatide.

Immediate-release exenatide can be administered at any time within a 60-minute period before breakfast and dinner (or the two main meals of the day, separated by approximately 6 hours or more). Immediate-release exenatide should not be administered after food. If an injection is missed, treatment should continue with the next scheduled dose.

The use of immediate-release exenatide is recommended in patients with type 2 diabetes mellitus who are already receiving metformin, a sulfonylurea, pioglitazone, and/or basal insulin. Immediate-release exenatide may continue to be used when basal insulin is added to the treatment. When immediate-release exenatide is added to treatment with metformin and / or pioglitazone, the dose of metformin and/or pioglitazone may be continued as an increased risk of hypoglycaemia is not anticipated compared to metformin or pioglitazone alone. When immediate-release exenatide is added to treatment with a sulphonylurea, a reduction in the sulphonylurea dose should be considered to reduce the risk of hypoglycaemia. When immediate-release exenatide is used in combination with basal insulin, the basal insulin dose should be reviewed. In patients at increased risk of hypoglycaemia, a reduction in the basal insulin dose should be considered.

The immediate-release exenatide dose does not need to be adjusted daily based on self-monitoring of glucose levels. Blood glucose self-tests are required to adjust the dose of sulfonylurea or insulin, particularly when treatment with Byetta is started and insulin is reduced. A gradual reduction in insulin dose is recommended.

Side effects & precautions

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Rarely (may affect 1 in 1,000 people), severe allergic reactions (anaphylaxis) have been reported.

You should consult your doctor immediately if you develop symptoms such as:

  • Swelling of the face, tongue, or throat (angioedema)
  • Rashes, itching and rapid inflammation of the tissues of the neck, face, mouth or throat
  • Difficulty to swallow
  • Hives and shortness of breath

Cases of inflammation of the pancreas (pancreatitis) have been reported (frequency not known) in patients receiving this drug. Pancreatitis can be a serious, life-threatening medical situation.

Check with your doctor if you have had pancreatitis, gallstones, alcoholism, or very high triglycerides. These medical situations may increase the chance of getting pancreatitis, or getting it again, whether or not you are taking this medication.

STOP taking this medication and contact your doctor immediately if you have severe and persistent stomach pain, with or without vomiting, because you could have an inflamed pancreas (pancreatitis).

Very common side effects (may affect more than 1 in 10 people):

  • nausea, (nausea is the most common side effect when you start treatment with this medicine, but it decreases over time in most patients)
  • vomiting
  • diarrhea
  • Hypoglycemia

Common side effects (may affect up to 1 in 10 people):

  • dizziness
  • headache
  • nervous feeling
  • constipation
  • pain in the stomach area
  • swelling
  • indigestion
  • itching (with or without rash)
  • flatulence (gases)
  • increased sweating
  • loss of energy and strength
  • heartburn
  • loss of appetite

Uncommon side effects (may affect up to 1 in 100 people):

  • decreased kidney function
  • dehydration, generally associated with nausea, vomiting, and/or diarrhea
  • unusual taste in the mouth
  • belching
  • injection site reactions (redness)
  • drowsiness
  • hair loss
  • weightloss

Rare side effects (may affect up to 1 in 1,000 people):

  • intestinal obstruction (blockage in the intestine)

Buying Byetta online.

You can buy Byetta Exenatide Injection online through one of the UK’s leading online pharmacies, Pharmacy Planet. It's easy and convenient. You will need to fill out a short assessment and the item will be delivered directly to your door. If you want to buy Diabetes Injections online, use Pharmacy Planet, a UK pharmacy you can trust.

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Byetta contains the active substance exenatide. It is an injectable medication used to improve blood glucose control in adults with type 2 diabetes mellitus (non-insulin-dependent).

Exenatide is a glucagon-like peptide-1 receptor agonist (GLP-1) that exhibits several anti-hyperglycemic actions of glucagon-like peptide-1 (GLP-1). The amino acid sequence of exenatide partially overlaps that of human GLP-1. Exenatide has been shown to bind and activate the known human GLP-1 receptor in vitro, its mechanism of action being mediated by cyclic AMP and/or other intracellular signaling pathways.

Exenatide increases glucose-dependent insulin secretion from the beta cells of the pancreas. As the blood glucose concentration decreases, insulin secretion returns to normal. When exenatide was used in combination with metformin alone, no increase in the incidence of hypoglycemia was observed compared to placebo in combination with metformin that could be due to this glucose-dependent insulinotropic mechanism.

Exenatide suppresses glucagon secretion, which is known to be abnormally elevated in type 2 diabetes. Low concentrations of glucagon lead to decreased hepatic glucose production. However, exenatide does not affect the normal response of glucagon or other hormones to hypoglycemia.

Exenatide slows gastric emptying and therefore reduces the rate at which glucose derived from food appears in the circulation.

Byetta is used with other diabetes medicines, called metformin, sulfonylureas, thiazolidinediones, and basal or long-acting insulin. Your doctor has prescribed Byetta as an additional medicine that helps you control your blood sugar. Continue with your exercise and eating plan. The medicine in Byetta helps your body increase insulin production when your blood sugar is high.

Always take this medicine exactly as your doctor, pharmacist, or diabetes nurse has told you. If in doubt, ask your doctor, pharmacist, or diabetes nurse again if you have any questions.

Two concentrations of Byetta are available: Byetta 5 micrograms and Byetta 10 micrograms. Your doctor may tell you to start treatment using Byetta 5 micrograms twice a day. After using Byetta 5 micrograms twice daily for 30 days, your doctor may increase the dose to Byetta 10 micrograms twice daily.

If you are over 70 years old or have kidney problems, it may take more than 30 days for you to tolerate the dose of Byetta 5 micrograms, so your doctor may not increase your dose.

An injection from your pre-filled pen will give you your dose. Do not change your dose unless your doctor tells you to.

You should inject this medication at any time within 60 minutes (1 hour) before breakfast and dinner, or before your two main meals of the day, which should be about 6 hours or more apart. Do not use this medicine after meals.

You should inject this medication under the skin (subcutaneous injection) into the upper leg (thigh), stomach area (abdomen), or upper arm. If you are using Byetta and insulin, you must inject them separately.

To set the Byetta dosage, you do not need to determine your blood sugar levels daily. However, if you are also using a sulfonylurea or insulin your doctor may tell you to check your sugar levels to adjust the dose of sulfonylurea or insulin. If you are receiving insulin, your doctor will tell you how to lower your insulin dose and will recommend that you check your blood sugar level more frequently to avoid hyperglycemia (high blood sugar levels) and diabetic ketoacidosis (a complication of diabetes that occurs when the body cannot break down glucose because there is not enough insulin).

Treatment with immediate-release exenatide (Byetta) should be started with a 5 μg dose of exenatide administered twice daily for at least one month in order to improve tolerability. The exenatide dose can then be increased to 10 μg twice daily to further improve glycemic control. Doses greater than 10 μg twice a day are not recommended.

Immediate-release exenatide is available as a pre-filled pen with 5 µg or 10 µg doses of exenatide.

Immediate-release exenatide can be administered at any time within a 60-minute period before breakfast and dinner (or the two main meals of the day, separated by approximately 6 hours or more). Immediate-release exenatide should not be administered after food. If an injection is missed, treatment should continue with the next scheduled dose.

The use of immediate-release exenatide is recommended in patients with type 2 diabetes mellitus who are already receiving metformin, a sulfonylurea, pioglitazone, and/or basal insulin. Immediate-release exenatide may continue to be used when basal insulin is added to the treatment. When immediate-release exenatide is added to treatment with metformin and / or pioglitazone, the dose of metformin and/or pioglitazone may be continued as an increased risk of hypoglycaemia is not anticipated compared to metformin or pioglitazone alone. When immediate-release exenatide is added to treatment with a sulphonylurea, a reduction in the sulphonylurea dose should be considered to reduce the risk of hypoglycaemia. When immediate-release exenatide is used in combination with basal insulin, the basal insulin dose should be reviewed. In patients at increased risk of hypoglycaemia, a reduction in the basal insulin dose should be considered.

The immediate-release exenatide dose does not need to be adjusted daily based on self-monitoring of glucose levels. Blood glucose self-tests are required to adjust the dose of sulfonylurea or insulin, particularly when treatment with Byetta is started and insulin is reduced. A gradual reduction in insulin dose is recommended.

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Rarely (may affect 1 in 1,000 people), severe allergic reactions (anaphylaxis) have been reported.

You should consult your doctor immediately if you develop symptoms such as:

  • Swelling of the face, tongue, or throat (angioedema)
  • Rashes, itching and rapid inflammation of the tissues of the neck, face, mouth or throat
  • Difficulty to swallow
  • Hives and shortness of breath

Cases of inflammation of the pancreas (pancreatitis) have been reported (frequency not known) in patients receiving this drug. Pancreatitis can be a serious, life-threatening medical situation.

Check with your doctor if you have had pancreatitis, gallstones, alcoholism, or very high triglycerides. These medical situations may increase the chance of getting pancreatitis, or getting it again, whether or not you are taking this medication.

STOP taking this medication and contact your doctor immediately if you have severe and persistent stomach pain, with or without vomiting, because you could have an inflamed pancreas (pancreatitis).

Very common side effects (may affect more than 1 in 10 people):

  • nausea, (nausea is the most common side effect when you start treatment with this medicine, but it decreases over time in most patients)
  • vomiting
  • diarrhea
  • Hypoglycemia

Common side effects (may affect up to 1 in 10 people):

  • dizziness
  • headache
  • nervous feeling
  • constipation
  • pain in the stomach area
  • swelling
  • indigestion
  • itching (with or without rash)
  • flatulence (gases)
  • increased sweating
  • loss of energy and strength
  • heartburn
  • loss of appetite

Uncommon side effects (may affect up to 1 in 100 people):

  • decreased kidney function
  • dehydration, generally associated with nausea, vomiting, and/or diarrhea
  • unusual taste in the mouth
  • belching
  • injection site reactions (redness)
  • drowsiness
  • hair loss
  • weightloss

Rare side effects (may affect up to 1 in 1,000 people):

  • intestinal obstruction (blockage in the intestine)

You can buy Byetta Exenatide Injection online through one of the UK’s leading online pharmacies, Pharmacy Planet. It's easy and convenient. You will need to fill out a short assessment and the item will be delivered directly to your door. If you want to buy Diabetes Injections online, use Pharmacy Planet, a UK pharmacy you can trust.

Frequently Asked Questions

Proper storage of Byetta is crucial to maintaining its effectiveness and safety. The pen should be stored in the refrigerator (2°C to 8°C) before first use. Once opened, it can be kept at room temperature (below 25°C) for up to 30 days, but it must never be frozen.

To keep your medication safe, ensure it is stored in its original packaging to protect it from light, and do not use the medication if it has been frozen or left in high heat. Always check the expiry date before use.

If you travel frequently, keep Byetta in a cool bag to maintain the correct temperature.

Byetta is mostly prescribed for managing blood sugar levels in people with type 2 diabetes; however, many patients also experience weight loss while on this medication.

It is not officially classified as a weight loss drug, but studies show patients do lose weight while taking it. If weight loss is a priority in your diabetes management plan, speak with your healthcare professional to determine whether Byetta is a suitable option for you.

If you miss a dose of Byetta, take it as soon as you remember, as long as it is at least 6 hours before your next scheduled dose. If it is closer to your next dose, skip the missed injection and continue with your usual schedule.

To help ensure you don’t miss a dose, consider setting reminders on your phone or using a weekly medication planner. Do not take a double dose to make up for the missed injection, as this can lead to side effects such as nausea, vomiting, or dizziness.

Byetta begins working within a few hours after the first injection, helping to regulate blood sugar levels post-meals. However, it may take several weeks for patients to notice significant improvements in their blood sugar readings.

Byetta is often prescribed alongside other diabetes medications to improve blood sugar control. However, it is not recommended to use it with insulin or other GLP-1 receptor agonists, as this may increase the risk of low blood sugar.

Byetta does not usually cause low blood sugar, as it only works when your glucose levels are high. However, it may increase the risk of hypoglycaemia if you are also taking gliclazide or insulin. If this happens, symptoms to watch for include shakiness, sweating, dizziness, confusion, and an increased heart rate.

To help prevent this, your healthcare professional may need to adjust the dosage of your other diabetes medication.

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Authored By

HARMINDER ‘HARMY’ KAUR

BSc(hons) Pharmacy

GPhC Number: 2061107

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Reviewed By

GURDEV SEHMI

BSc Pharm, MRPharmS, Independent Prescriber, Superintendent Pharmacist, Clinical Lead

GPhC Number: 2050925