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Semaglutide Side Effects (Rybelsus, Ozempic, and Wegovy)

Semaglutide Side Effects

side effects of semaglutide rybelsus ozempic

Semaglutide side effects need to be considered before initiating the treatment. Patients who are discontinuing metformin therapy due to gastrointestinal side effects may not easily tolerate Semaglutide or any other GLP-1 agonist as well.

It is also important to keep in mind the different formulations and strengths of the drug as the incidence of side effects may be higher in the Semaglutide high-dose formulations.

Ozempic Dosing for Weight Loss and Diabetes Mellitus

Formulation and strengths of Semaglutide available:

  • Oral Formulations of Semaglutide:
    • Rybelsus is an orally available Semaglutide. It is available as 3mg, 7mg, and 14 mg tablets and administered daily.
  • Injectable Formulations of Semaglutide:
    • Ozempic and Wegovy are two injectable formulations of Semaglutide. The injection is administered once a week subcutaneously. Ozempic is available as 0.5 mg and 1 mg, while Wegovy is available as a 2.4 mg injection.

Rybelsus and Ozempic are only FDA-approved for the treatment of Diabetes, while Wegovy is FDA-approved for Obesity and Weight loss as well.

What is Wegovy, Rybelsus, and Ozempic? Efficacy in DM and Obesity

Who should not be prescribed Semaglutide?

Before discussing the important side effects of Semaglutide, contraindications to its use must be known. The following groups of patients should not be prescribed Semaglutide:

Patients who are allergic to Semaglutide:

  • All individuals who are allergic to Semaglutide. Patients with an allergy or a hypersensitivity reaction may develop a rash, body itching, wheels and hives, shortness of breath, wheezing, facial and lip swelling, and hypotension.
  • All individuals who have had a severe allergic reaction in the past must avoid using it again.

Rybelsus & Ozempic for Weight Loss and Side effects Reviews

Patients at risk of developing MTC (Medullary Thyroid Carcinoma):

  • Patients with a personal history or a family history of medullary thyroid carcinoma. MTC is a calcitonin secreting cancer that accounts for less than 5% of all Thyroid Cancers.
    • All patients who are initiated on Semaglutide treatment should be asked to report to their doctor if they develop any of these symptoms:
      • Lump or swelling in the neck
      • difficulty in breathing or swallowing
      • hoarseness or a change in voice
      • pain when swallowing

Can Ozempic Cause Thyroid Cancer?

Patients with MEN2 Syndrome:

  • Patients with MEN2 (Multiple Endocrine Neoplasia Type 2). MEN2 comprises three cancers: Medullary thyroid cancer, parathyroid tumors, and pheochromocytoma.
semaglutide side effects men syndromes
MEN Syndromes

Pregnancy and breastfeeding:

  • Semaglutide should also be avoided in breastfeeding mothers and pregnancy. It has not been studied in pregnant individuals.
  • Metformin and insulin are the preferred treatments for gestational diabetes.
  • Non-pregnant diabetic females who plan to become pregnant should stop using Semaglutide injection at least two months before conception.

Metformin Side effects, Contraindications, and Concerns

Hospitalized patients:

  • Semaglutide should be avoided in hospitalized patients admitted with Diabetic ketoacidosis and patients undergoing a major surgical procedure.
  • These patients should be kept on insulin during the hospital stay and frequent monitoring of the blood glucose is important.

Type 1 Diabetes:

  • Individuals with Diabetes mellitus type 1 should not be prescribed Semaglutide. Type 1 Diabetes patients are only treated with insulin.
semaglutide contraindications

Contraindications to the use of Semaglutide

Semaglutide Side effects:

The most common side effects of oral and injection Semaglutide (Rybelsus, Ozempic, and Wegovy) are related to the gastrointestinal tract. Since Semaglutide inhibits the motility of the stomach and delays gastric emptying, it causes the following gastrointestinal side effects:

  • Abdominal fullness
  • Bloating after taking a meal
  • Early Satiety (appetite is suppressed as soon as the patient starts eating)
  • Nausea and Vomiting

Other abdominal side effects that are commonly reported include:

  • Burping
  • Diarrhea or Constipation
  • Indigestion, Acid reflux, and Heartburn
  • Abnormal taste

How to Get Relief from Persistent Nausea When on Ozempic?

How to get away with the abdominal symptoms?

  • For mild symptoms, it is advised not to discontinue the treatment. If the patient is on oral Rybelsus, advise the patient to take it between one of the major meals such as dinner or lunch.
  • Some patients might get relief with over-the-counter antacids like calcium carbonate, H2 blockers like famotidine, and Proton-pump inhibitors like omeprazole in severe cases.
  • Oral Simethicone might help relieve burping and flatulence. Some patients might need gut antiseptics like Rifaximin to clear the intestines of gas-forming bacteria.

Oral Simethicone might relieve abdominal gases

Semaglutide may cause dizziness, lethargy, dehydration, and kidney disease. In under-weight individuals, it may cause further weight loss that could contribute to weakness and lethargy.

It has also been reported to increase the heart rate. The clinical significance of this is not known, however, patients who are at risk of cardiac arrhythmias should use it with caution.

What is Rybelsus? Side effects, Drug Interactions, & Concerns

Some of the serious side effects of Semaglutide include:

  • Acute Pancreatitis:

    • There have been cases of both acute and chronic pancreatitis. Patients with a history of pancreatitis may be at increased risk of developing pancreatitis from Semaglutide. Consider alternative treatment options.
    • Patients who consume alcohol are at an increased risk of developing acute pancreatitis. All patients must be asked to report to their doctor if they develop the following symptoms:
      • Abdominal pain that is marked in the epigastrium and radiates to the back
      • Nausea and vomiting
      • Fever
      • Bloating

Ozempic Weight Loss Reviews by Real Patients @ Reddit

  • Gall-Stones:

    • All GLP-1 analogs including Semaglutide can increase the risk of gall stones and biliary diseases.
    • Patients who have rapid weight loss as a result of the drug might be at a greater risk of developing gall stones.

Gallstones Diet: Low-fat Diet for Gallbladder Disease

  • Diabetic retinopathy

    • In Patients who are treated with Semaglutide, a worsening in the symptoms of diabetic eye disease has been noted.
    • The exact mechanism of this increased incidence of diabetic retinopathy is not known, however, one possibility is the rapid change in blood glucose could be causing it.

Ozempic Retinopathy (Semaglutide Diabetic Retinopathy)

  • Kidney disease

    • Patients with no pre-existing renal disease have reported cases of acute kidney injury or chronic renal failure exacerbation, including severe cases that require hemodialysis. Most cases were reported in patients suffering from nausea, vomiting, and diarrhea.

Foods to Avoid in Kidney Disease and Diabetes 

    • All patients should be asked to report if they have excessive fatigue, reduced volume or frequency of urination, or periorbital puffiness. Renal functions should be checked before treatment initiation and at regular intervals as required.
    • Furthermore, patients must also be advised to take plenty of water and avoid dehydration.
  • Allergic reactions

    • Semaglutide has been linked to severe hypersensitivity reactions. These include anaphylactic reactions as well as angioedema.
    •  Patients with anaphylaxis and angioedema to GLP-1 receptor agonists should be cautious. There is a possibility of cross-sensitivity among other GLP-1 analogs like Liraglutide, Dulaglutide, Exanetide, and Albiglutide.

Rybelsus for Weight Loss in Non Diabetic Patients 

    • All patients must be asked to report to their doctor if they develop itching, hives, rashes, hypotension, facial and lips swelling, difficulty breathing, and wheezing.
    • Patients must also discontinue the treatment and can take an over-the-counter antihistamine such as chlorpheniramine or Benadryl.
  • Hypoglycemia when co-administered with insulin or sulfonylurea:

    • Semaglutide does not cause hypoglycemia. It causes a glucose-dependent secretion of insulin. However, when co-administered with insulin or sulfonylurea, it can cause hypoglycemia.
    • The dose of sulfonylureas and insulin should be reduced when starting the treatment. All patients should be warned of the risk of hypoglycemia and immediately check blood glucose or take some sugar tablets or anything that is sweet including cookies, juices etc if they have the following symptoms:
      • Apprehension
      • Palpitation
      • Sweating
      • Chills
      • Hunger
      • Drowsiness or dizziness
    • Patients who consume alcohol or perform strenuous activity are at an increased risk of hypoglycemia.

Emergency Treatment of Hypoglycemia at Home

  • Medullary thyroid cancer:

MEN Syndrome multiple endocrine neoplasia ozempic thyroid cancer
MEN Syndromes: MEN-1, MEN-2A, and MEN-2B
    • In animal studies, Semaglutide increased the incidence of rodent C-cell thyroid tumors. It is not known if Semaglutide can cause human thyroid C cell tumors. Semaglutide can cause MTC.
    • Patients should be informed about the possible risks and symptoms including neck mass, dysphagia, or persistent hoarseness before taking the drug.

Leading Causes of Obesity and Weight Gain 

    • Patients with a history of MTC or patients with multiple endocrine syndrome type 2 (MEN2) should not use Semaglutide. MTC has been reported in patients who have received liraglutide, a GLP-1 receptor antagonist.
    • Patients with elevated calcitonin levels or thyroid nodules that were detected in imaging studies or physical exams should consult an endocrinologist.
    • Patients treated with Semaglutide should be monitored regularly for serum calcitonin, and thyroid ultrasound monitoring can be used to detect MTC early.
  • Psychiatric Side effects:

    • Some people have reported suicidal behavior when taking weight-management medications.
    • Patients with a history of suicide attempts or active suicidal thoughts should not use this medication.

Rybelsus and Depression: Symptoms Reported on Reddit

  • Weight Loss:

    • Weight loss is a desirable side effect in most patients. However, in patients who are lean and already losing weight due to uncontrolled diabetes, weight loss may be an undesirable side effect.
    • Among all the GLP-1 analogs, Semaglutide has been associated with the most weight loss. The weight loss associated with different formulations varies.
    • Weight loss occurs mostly with the high dose once-weekly injectable Semaglutide, Wegovy. However, significant weight loss has also been observed with Rybelsus and Ozempic.

Before and After Pictures & Reviews of People who are using Ozempic

In Conclusion:

Like all the other GLP-1 analogs, Semaglutide can cause pancreatitis, abdominal symptoms, and kidney injury. It should be avoided in patients with medullary thyroid carcinoma.

What do you think?

Written by Diabetes Doctor

I am an Internist practicing medicine for the last fifteen years. Over the years, I have learned that medicine is not about prescribing pills. True medical practice is helping people.
I do prescribe pills as well but the best results I get are when I motivate people to overcome their problems with little changes in their lifestyles.
Since most of my patients are obese, have diabetes, hypertension, high cholesterol levels, I am writing at dibesity.com when free.
Dibesity, I know the correct word is diabesity. Ignore this! Be with us.

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