Ozempic and GLP-1 Constipation: Can It Cause Hemorrhoids or Fissures?
Constipation is a recognized side effect of Ozempic, Wegovy, and other medications that act on GLP-1.[1][2]
When bowel movements become harder to pass, the resulting hard stools and straining can contribute to hemorrhoids or anal fissures—adding anal discomfort to an already frustrating digestive problem.[3][4]
Understanding why constipation happens, how to recognize it, and what may help is an important starting point for reducing that cycle.
- Why constipation happens
- Fissures & hemorrhoids
- Symptoms
- Managing constipation
- When to seek help
- FAQs
Why GLP-1 Medications Can Cause Constipation
GLP-1 is a hormone involved in blood sugar control and appetite. Medications such as semaglutide—the active ingredient in Ozempic and Wegovy—mimic its effects, helping regulate blood sugar, reduce appetite, and delay stomach emptying.[1][2]
Constipation can have several contributing factors. These medications affect digestive function, while feeling fuller may also lead people to eat or drink less. If fluid and fiber intake fall, stools can become harder and more difficult to pass.[1][2][5]
How common is constipation? Rates vary by medication, dose, and study population. In placebo-controlled trials, constipation was reported by approximately 3–5% of adults taking Ozempic injections at 0.5 or 1 mg for diabetes, and 24% of adults taking Wegovy injections at 2.4 mg for weight management.[1][2]
Signs of constipation include:[5]
- Fewer than three bowel movements a week.
- Hard, dry, or lumpy stools.
- Straining or difficulty passing stool.
- Feeling that a bowel movement is incomplete.
Constipation can involve difficult bowel movements even when someone still goes regularly.[5]
These customer reviews describe constipation-related anal discomfort. The reviews do not identify Ozempic, Wegovy, or other GLP-1 use. Individual experiences and results vary.
How Constipation Can Contribute to Fissures and Hemorrhoids
When constipation develops during GLP-1 use, hard stools and repeated straining can affect the anal area in different ways.
Anal fissures
A hard, dry stool can stretch and injure the lining of the anal opening, creating a small tear. The pain may trigger muscle spasms that reduce blood flow to the injured area. Further difficult bowel movements can keep that cycle going.[6]
Hemorrhoids
Chronic constipation, straining, and prolonged toilet sitting can contribute to hemorrhoids or worsen existing symptoms. Rubbing or excessive cleaning can add to the irritation, particularly when the area is already sore or itchy.[4]
The two conditions can occur together because the same difficult bowel movement may contribute to both. Pain can also make someone postpone going to the bathroom, allowing stool to become harder and making the next bowel movement more difficult.[3][4][5][6]
Recognizing Fissure and Hemorrhoid Symptoms
When anal discomfort develops alongside constipation, the symptoms can vary depending on the tissue affected:
- Anal fissures often cause sharp or tearing pain as stool passes, followed by pain that can last for minutes or hours. Bright red blood may appear on the toilet paper or stool.[6]
- External hemorrhoids can cause itching, swelling, soreness, or a tender lump near the anus. If a blood clot forms, the pain may become severe and persistent.[4][7]
- Internal hemorrhoids commonly cause bright red bleeding without significant pain, although tissue that protrudes through the anal opening can cause irritation and discomfort.[4][7]
These symptoms can overlap. New or unexplained rectal bleeding should be discussed with a healthcare professional rather than attributed automatically to constipation, hemorrhoids, or a fissure.[4]
For a closer comparison, see Hemorrhoids vs. Anal Fissures: Key Differences.
Managing Constipation and Reducing Anal Discomfort
Making bowel movements easier to pass and reducing irritation around the anus can help address the cycle described above. Common approaches include:
Adequate fluids and gradual fiber intake
Fluids help fiber work effectively, while adding fiber gradually allows the body to adjust. Oats, fruit, vegetables, and other fiber-containing foods can help maintain intake when appetite is reduced. Fluid needs vary with health and activity level.[8]
Regular movement and less straining
Physical activity may help with constipation. Responding to the urge to go, avoiding forced bowel movements, and limiting prolonged toilet sitting can also reduce the habits that aggravate fissures and hemorrhoids.[3][4][8]
Medication guidance when needed
A healthcare professional may recommend a fiber supplement, osmotic laxative, or another option based on the symptoms and medical history. Persistent constipation may require a review of the medication plan. Changes to a GLP-1 dose or schedule should be discussed with the prescriber.[1][2][8]
When to Seek Medical Attention
Constipation that persists, worsens, or repeatedly makes bowel movements painful should be discussed with the GLP-1 prescriber. They can assess possible causes and whether the medication plan needs adjustment.[1][2][8]
Seek prompt medical attention if constipation is accompanied by:[5]
- Severe or constant abdominal pain.
- Vomiting or an inability to pass gas.
- Rectal bleeding or blood in the stool.
- Fever.
Persistent anal pain also warrants evaluation. A healthcare professional can determine whether a fissure, hemorrhoids, or another condition is contributing to the discomfort.[4][6]
Constipation Starts the Problem. Fissures and Hemorrhoids Can Keep It Going.
Hard stools and straining can leave behind a painful fissure, irritated hemorrhoids, or both. When the next bowel movement becomes something to dread, putting it off can make stools harder—and keep the cycle going.[3][4][5]
Managing constipation helps reduce the repeated strain. Pranicura 5 helps relieve its painful aftermath: the anal pain, itching, burning, and irritation associated with fissures and hemorrhoids.[10]
Find Relief →Frequently Asked Questions
Can Ozempic or Wegovy cause hemorrhoids or anal fissures?
Can I be constipated even if I have a bowel movement every day?
Yes. Frequency is only part of the picture. Hard stools, difficulty passing them, straining, or feeling that a bowel movement is incomplete can indicate constipation even when you go regularly.[5]
What may help with constipation while taking a GLP-1 medication?
Common approaches include adequate fluids, gradually increasing fiber, regular movement, and responding to the urge to go. If constipation continues, a healthcare professional can assess whether a fiber supplement, laxative, or another approach is appropriate for your symptoms and medical history.[8]
Why can fissure pain last after a bowel movement?
Passing stool can irritate the tear and trigger spasms in the anal sphincter muscle. These spasms can reduce blood flow to the injured area and contribute to pain that lasts for minutes or hours after the bowel movement ends.[6]
Should I stop my GLP-1 medication if I develop constipation?
Medical information note: This article is for general educational purposes and is not a substitute for medical advice, diagnosis or care. Seek guidance from a qualified healthcare professional for symptoms or questions specific to you.
Sources
- Novo Nordisk. Ozempic prescribing information. View source
- Novo Nordisk. Wegovy prescribing information. View source
- American Society of Colon and Rectal Surgeons. Anal Fissure. View source
- NIDDK. Symptoms & Causes of Hemorrhoids. View source
- NIDDK. Symptoms & Causes of Constipation. View source
- American Society of Colon and Rectal Surgeons. Anal Fissure Expanded Information. View source
- American Society of Colon and Rectal Surgeons. Hemorrhoids. View source
- NIDDK. Treatment for Constipation. View source
- Chang J, McLemore E, Tejirian T. Anal Health Care Basics. The Permanente Journal. 2016;20(4):15-222. View source
- DailyMed. Pranicura 5 Drug Facts, Pranicura Products LLC. View source