Rybelsus dosage, forms, and strengths

Medically reviewed by Keith GardnerR.Ph.
Registered Pharmacist
Updated Dec 3, 2024  •  Published Dec 3, 2024
Fact Checked

Key takeaways

  • Rybelsus lowers blood sugar in people with Type 2 diabetes.

  • Tablets are taken daily in the morning, right after waking up.

  • Take Rybelsus tablets on an empty stomach with a small amount of plain water—no more than half a cup.

  • Do not eat anything, take other drugs, or drink anything else, including water, for at least 30 minutes after a dose is taken.

  • Missed doses should be skipped.

Rybelsus is a prescription drug that helps manage blood sugar levels in people with Type 2 diabetes. The active ingredient in Rybelsus is semaglutide, the same active ingredient in the antidiabetic drug Ozempic and the weight loss drug Wegovy. Semaglutide is a GLP-1 receptor agonist. It mimics glucagon-like peptide 1 (GLP-1), a hormone that increases insulin secretion and reduces appetite. 

Like other prescription drugs, it’s important to take the correct dosage as prescribed by a doctor or healthcare provider. The dosage may depend on factors such as a person’s overall health and whether they’re switching from Ozempic. Read on to learn more about the Rybelsus dosage. 

Rybelsus forms and strengths

Rybelsus comes as an oral tablet or pill that’s taken by mouth. It is available in the following strengths. 

  • Tablets: 3 mg, 7 mg, and 14 mg

Rybelsus dosage for adults

Rybelsus is a brand-name medication approved by the FDA to treat Type 2 diabetes mellitus in adults. It is typically prescribed alongside appropriate lifestyle changes, such as a balanced diet and regular exercise. 

The starting dose of Rybelsus is one 3 mg tablet once daily for 30 days. This 3 mg daily dose is only meant to begin treatment and won’t help control high blood sugar levels. After 30 days, the dosage is increased to 7 mg once daily to help manage blood sugar. After another 30 days, the dosage may be increased to 14 mg daily if the 7 mg dose isn’t effective. 

  • Standard adult dosage for Type 2 diabetes: 7–14 mg once daily in the morning

  • Maximum adult dosage for Type 2 diabetes: 14 mg once daily in the morning

Rybelsus dosage chart

Indication Starting dosage Standard dosage Maximum dosage
Type 2 diabetes 3 mg dose taken once daily for 30 days 7–14 mg dose taken by mouth once daily 14 mg dose once daily

Rybelsus dosage when switching from Ozempic

A person who is currently using Ozempic at 0.5 mg can switch to Rybelsus at either 7 mg or 14 mg, starting up to seven days after their last Ozempic injection. When switching from Rybelsus to Ozempic, those who take Rybelsus 14 mg daily can start Ozempic at a dose of 0.5 mg once a week the day after their last Rybelsus dose. 

Things to keep in mind while taking Rybelsus

Rybelsus should always be taken on an empty stomach with only a small amount of water, or no more than half a cup of water. It’s important not to eat, drink, or take other drugs for at least 30 minutes after swallowing a Rybelsus tablet. Otherwise, the medicine will not be absorbed properly and may not work as well as it should. Always swallow the tablets whole without crushing, splitting, or chewing them.

If a 14 mg daily dose is needed to control blood glucose levels, it’s recommended to avoid taking two 7 mg Rybelsus tablets to achieve a 14 mg dose. Doing so may increase the risk of an overdose and potential side effects.

Always consult a healthcare provider before starting and while undergoing treatment with Rybelsus. The dosage may be adjusted during treatment for several reasons, including any physical activity or diet changes, stress, illness, fever, infection, injury, or surgery. Blood sugar levels should be regularly checked through regular visits with a healthcare provider. 

If you miss a dose of Rybelsus, skip the missed dose and return to your regular schedule. Do not take two doses at once to make up for a missed dose, as this can increase the risk of side effects.

Rybelsus dosage for children

The FDA has not approved Rybelsus for children or adolescents under 18 years old. More research is needed to determine its safety and efficacy in children. 

Rybelsus dosage restrictions

Dosage changes are not necessary in people with kidney problems or liver disease.

Rybelsus has a boxed warning that it should never be used in people with a personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN-2). Taking Rybelsus may increase the risk of thyroid tumors

Rybelsus should be avoided by those with a hypersensitivity to It or any of its ingredients. Individuals who have a history of serious allergic reactions to It or its ingredients, such as rash, itching, swelling, or difficulty breathing, should also avoid using this medication.

Tell your healthcare provider if you have a history of kidney disease, inflammation of the pancreas (pancreatitis), or vision problems due to diabetes (diabetic retinopathy). You should also tell your healthcare provider about other medical conditions and whether you are pregnant or breastfeeding before taking Rybelsus. 

Some drug interactions may affect how Rybelsus or other medications work, which may require dosage changes. Tell your healthcare provider about any medications you take, including prescription drugs, over-the-counter medicines, and herbal supplements, before taking Rybelsus. 

How to take Rybelsus

Rybelsus is taken as a pill once daily in the morning. The most important thing to know is that it must be taken on an empty stomach at least 30 minutes before eating, drinking, or taking another medication or supplement.

  • Take your medicine as directed. The dosage may need to be changed during the course of treatment.

  • Please read the Medication Guide that comes with Rybelsus.

  • Take one dose daily.

  • Take the tablet on an empty stomach right after waking up in the morning.

  • Swallow the tablet whole with a small amount of plain water (less than four ounces). Do not crush, break, or chew it.

  • Do not eat, drink, or take other oral medications for 30 minutes after taking a dose.

  • Store Rybelsus tablets at room temperature in a dry place protected from moisture. Keep the container closed unless taking a dose.

Rybelsus dosage FAQs

How long does it take Rybelsus to work?

Rybelsus starts to show effects around day 31 of treatment, after which the dosage is increased from 3 mg to 7 mg daily. After each dose adjustment, the medication typically takes about four to five weeks to reach stable levels in the bloodstream. As a result, it may take two to three months to fully experience the benefits of Rybelsus.

How long does Rybelsus stay in your system?

Rybelsus has a half-life of approximately one week. Half-life refers to the time it takes for half of a drug's concentration to be eliminated from the body. Given this half-life, it can take several weeks for Rybelsus to be completely cleared from your system after you stop taking it. As it may take around five half-lives for a drug to be cleared, Rybelsus could remain in your system for around five weeks.

What happens if I miss a dose of Rybelsus?

Do not take a missed dose if it wasn’t taken in the morning on an empty stomach. Skip the missed dose and take the next dose the following day when first waking up.

How long can you take Rybelsus?

Rybelsus is a long-term diabetes treatment. Healthcare providers prescribe it for as long as it works and doesn’t cause serious adverse reactions. Clinical studies have found that Rybelsus is safe and effective over study periods ranging from 26 to 78 weeks

How do I stop taking Rybelsus?

Rybelsus can be stopped at any time without causing withdrawal effects. In clinical trials, most people who quit Rybelsus did so because of digestive system problems like nausea, vomiting, and diarrhea. Other reasons to stop Rybelsus include serious side effects like kidney failure, vision problems, pancreatitis, or hypersensitivity reactions.

What is the maximum dosage for Rybelsus?

The maximum Rybelsus dosage is 14 mg daily. This dosage is effective for maximizing glycemic control while minimizing the risk of side effects.

Can you overdose on Rybelsus?

Yes, it’s possible to overdose on Rybelsus. An overdose of Rybelsus may cause severe nausea and vomiting, which may increase the chance of dehydration and kidney problems. In addition, an overdose may cause low blood sugar levels (hypoglycemia), with symptoms that may include dizziness, headache, sweating, confusion, seizures, and loss of consciousness. 

The active ingredient may take weeks to clear from the body. Therefore, any problems caused by an overdose could last days or weeks. If too much is ingested, healthcare providers may have to closely monitor and treat the individual for a longer period. Call a poison control center or healthcare professional if too much Rybelsus is taken. 

What interacts with Rybelsus?

Rybelsus can interact with diabetes medications, especially those like sulfonylureas and insulin. When taken together, these drugs may increase the risk of hypoglycemia. Therefore, the dosage of diabetes medications may need to be changed to keep blood sugar levels safe. In addition, Rybelsus slows down how quickly the stomach empties, affecting the absorption of other oral medications. 

What happens when you mix Rybelsus and alcohol?

Alcohol does not directly affect how Rybelsus works. However, drinking alcohol may affect blood sugar levels, which can alter the effectiveness of Rybelsus for Type 2 diabetes. In addition, the side effects of alcohol and Rybelsus may overlap, such as nausea, vomiting, and an upset stomach. 

Is it safe to take Rybelsus during pregnancy?

Rybelsus is not typically recommended for use in pregnant women due to the potential risk of increased harm to an unborn baby. Women taking Rybelsus should stop the medication at least two months before getting pregnant, as it can take some time for the medication to be cleared from the body. 

Is it safe to take Rybelsus while breastfeeding?

Breastfeeding is not recommended for women who are taking Rybelsus because it could be harmful to the baby. There is a risk that the infant might face serious health issues from the medication. 

What are the side effects of Rybelsus?

The most common side effects of Rybelsus are gastrointestinal complaints, such as nausea, vomiting, diarrhea, abdominal pain, and constipation. Other possible side effects of Rybelsus that can be severe include hypoglycemia, pancreatitis, and vision problems. Vomiting and diarrhea may lead to a loss of fluids, which could cause dehydration and worsened kidney problems. 

Is hypoglycemia a problem with Rybelsus?

Oral semaglutide is considered to have a low risk of hypoglycemia, especially when used alone. In clinical trials, 1% or less of participants experienced severe hypoglycemia. The risk of hypoglycemia with semaglutide is increased when it’s taken with insulin secretagogues, especially sulfonylureas and insulin. Signs and symptoms of hypoglycemia include dizziness, sweating, confusion, headache, mood changes, fast heartbeat, and weakness. 

Does Rybelsus need to be refrigerated?

Rybelsus does not require refrigeration. Instead, it should be stored at room temperature. It’s important to keep Rybelsus in its original carton to protect it from moisture. In addition, the tablets should stay in their original blister card until it’s time to take a dose to ensure they stay dry and protected from humidity.

Can Rybelsus be used for weight loss?

The FDA has not approved Rybelsus as a weight-loss drug. However, because the drug can reduce appetite, weight loss is a possible off-label use of the drug. In one study, people with Type 2 diabetes receiving oral semaglutide at a dose of 40 mg experienced a statistically significant reduction in body weight of 5.4 kg (around 12 lbs) after 10 weeks of treatment compared to placebo.

Medically reviewed by Keith GardnerR.Ph.
Registered Pharmacist

Keith Gardner, R.Ph., is a graduate of Southwestern Oklahoma State University School of Pharmacy. He has 10 years of community pharmacy experience followed by a 22-year career with a major pharmaceutical company in which he served as a medical information consultant. In that role, Gardner provided medical information to consumers and healthcare providers in numerous disease states. He currently resides in Monument, Colorado, with his wife and three dogs.

... 

Subscribe to our savings newsletter

Health education, drug info, wellness & more

By clicking 'Subscribe', I agree to SingleCare's Terms & Conditions.