NEW2026 · Text us +1 272-529-4722
Dicyclomine is a prescription anticholinergic (antispasmodic) used to relieve cramping, bloating, and abdominal pain associated with irritable bowel syndrome (IBS) and other gastrointestinal disorders. It works by relaxing intestinal smooth muscle and slowing gut motility, thereby reducing painful spasms. Dicyclomine provides symptom relief and is often used alongside diet and stress management therapies. It should be taken exactly as prescribed and may cause drowsiness, dizziness, or blurred vision. Avoid driving, alcohol, and excessive heat exposure.
Reviewed by:
Dr. Steve Malen, PharmD
Dr. Steven Blikstein, PharmD
Form
Strength
How would you like to get this medication?
Choose a strength and quantity to continue.
Dicyclomine is a prescription anticholinergic (antispasmodic) used to relieve cramping, bloating, and abdominal pain associated with irritable bowel syndrome (IBS) and other gastrointestinal disorders. It works by relaxing intestinal smooth muscle and slowing gut motility, thereby reducing painful spasms. Dicyclomine provides symptom relief and is often used alongside diet and stress management therapies. It should be taken exactly as prescribed and may cause drowsiness, dizziness, or blurred vision. Avoid driving, alcohol, and excessive heat exposure.
Complete a health screening
A short questionnaire about your health history and current symptoms — takes about 2 minutes.
Provider reviews your answers
A licensed provider reviews your screening answers, typically within 24 hours.
Prescription fulfilled
If approved, your Rx is sent to Invictus Pharmacy and you're notified by text or email. Free nationwide shipping.
Important safety information
Bentyl is contraindicated in certain medical conditions due to the risk of exacerbating existing issues or introducing new complications. Understanding these contraindications is critical for patient safety.
Patients with obstructive bowel disease, severe ulcerative colitis, or reflux esophagitis should avoid Bentyl, as its anticholinergic properties may worsen these conditions. Bentyl is also contraindicated in individuals with glaucoma due to potential increases in intraocular pressure and its impact on vision.
For nursing mothers, Bentyl poses risks because of its excretion in breast milk and its effects on infants, which are not well documented. Additionally, Bentyl should not be administered to children under six months of age because of its potentially severe side effects, which their developing systems may not tolerate safely.
Dicyclomine is a widely prescribed medication primarily used for its antispasmodic effects on the gastrointestinal tract. Classified under anticholinergic drugs, it helps alleviate discomfort associated with irritable bowel syndrome (IBS) by reducing muscle spasms in the gut.
Recently, it has been more strictly defined as adjunctive therapy for the treatment of Functional Bowel/Irritable Bowel Syndrome. It is emphasized as a secondary tool when dietary and lifestyle changes are insufficient, rather than a standalone cure.
What sets Dicyclomine apart is its non-narcotic, non-addictive nature, making it a preferred choice for long-term management of chronic conditions like IBS. While Dicyclomine significantly reduces gastrointestinal spasm symptoms, it doesn’t address the underlying causes of digestive disorders. Instead, it focuses on symptom relief to enhance quality of life.
Dicyclomine is administered in various forms, including capsules, tablets, and syrup. For patients unable to tolerate oral medication, Bentyl can also be given by intramuscular injection, providing a versatile range of options tailored to individual patient needs.
Note: This medication’s generic and brand-name formulations are used interchangeably throughout this article.
Bentyl is the brand-name version of dicyclomine, an anticholinergic antispasmodic. It works by blocking acetylcholine, a neurotransmitter that causes smooth muscle in the digestive tract to contract, thereby easing the cramping, bloating, and abdominal pain often associated with conditions such as irritable bowel syndrome (IBS).
Although effective for short-term symptom relief, Bentyl can cause side effects such as dry mouth, dizziness, blurred vision, and constipation due to its anticholinergic activity.
Bentyl is primarily used to manage the symptoms of irritable bowel syndrome (IBS), a common condition of the large intestine characterized by abdominal pain, bloating, cramping, and changes in bowel habits. Bentyl relieves distressing symptoms by reducing the severity and frequency of gut spasms.
Though Bentyl primarily focuses on IBS, its muscle-relaxant properties also make it effective for treating other gastrointestinal disorders involving muscle spasms.
However, it’s essential to note that Bentyl is not a first-line treatment for diarrhea or nausea. Instead, it alleviates the overall discomfort and unpleasantness caused by IBS, indirectly impacting other symptoms like diarrhea or nausea by reducing abdominal cramping.
Despite its effectiveness, Bentyl is not available over the counter, and a prescription from a healthcare provider is required. This prescription-only status ensures patients are adequately assessed for suitability and risk factors before starting the medication.
Bentyl revolves around its anticholinergic properties. By inhibiting acetylcholine, a neurotransmitter that stimulates gut muscle contractions, Bentyl reduces the intensity of abnormal muscle contractions often seen in irritable bowel syndrome (IBS). This results in fewer muscle spasms and reduced cramping, thereby providing patients with symptomatic relief.
Bentyl’s interaction with acetylcholine extends beyond the digestive system, influencing other areas where this neurotransmitter is active. This broader impact contributes to some of the side effects seen with Bentyl, such as dry mouth and blurred vision, which are classic anticholinergic responses.
Typically, Bentyl begins to exert its effect within 1 to 2 hours after administration, aligning with patient expectations for prompt symptom management and thereby supporting therapeutic adherence.
Bentyl requires careful dosage management and specific administration guidance. The typical protocol starts with a dose of 20 mg up to four times a day, reflecting the need for consistent therapeutic levels to manage IBS symptoms effectively.
Patients often begin treatment with 20 mg doses, administered four times daily, to assess tolerance and initial response. Based on these factors, healthcare providers may increase the dosage to 40 mg four times daily, aligning with individual needs while maintaining safety.
Bentyl is best taken 30 minutes to an hour before meals to optimize its effect on reducing meal-related gut spasms and improve patient comfort during digestion, but it can be taken without regard to meals. Adequate dosing intervals throughout the day ensure continuous symptom control.
In cases where oral administration is not feasible, an intramuscular injection of Bentyl offers an effective alternative, administered in a clinical setting to maintain controlled dosing.
For safe storage, Bentyl should be kept at room temperature, away from moisture and direct sunlight. This precaution preserves the medication’s integrity and efficacy. Always store it out of reach of children to prevent accidental ingestion and potential overdose.
Like many medications, Bentyl requires attentive dosage management due to the risk of overdose. Overconsumption can trigger severe symptoms, including respiratory challenges, seizures, and hallucinations, necessitating immediate medical intervention.
Bentyl, while effective for managing IBS, is associated with several side effects, which vary in severity from patient to patient. Understanding these effects helps in managing expectations and promotes informed discussions between patients and healthcare providers.
Commonly reported side effects of Bentyl include dry mouth, dizziness, blurred vision, nausea, and constipation. These effects are primarily attributable to its anticholinergic nature and underscore the need for caution when operating machinery or driving.
While less common, Bentyl can induce severe side effects such as confusion, hallucinations, and urinary retention. Another critical risk is anhidrosis, or decreased sweating, which can lead to heat prostration, particularly in hot environments.
If any severe side effects occur, immediate medical attention is critical. These severe reactions warrant a reevaluation of the medication and dosage regimen by a healthcare provider.
Long-term use of Bentyl can lead to cumulative side effects such as cognitive impairments or persistent constipation, potentially complicating treatment. Patients should be monitored regularly to identify any developing issues and make necessary adjustments to therapy.
Bentyl is only recommended during pregnancy if clearly necessary, reflecting concerns about insufficient data on its safety. Expectant mothers should consult their healthcare provider to weigh the benefits and risks carefully and to explore alternative therapies if appropriate.
When using Bentyl, it’s crucial to consider potential interactions with other medications, as these can affect both efficacy and safety. These interactions may increase side effects or alter the expected benefits of the medication.
Bentyl can interact with medications such as tricyclic antidepressants, other anticholinergics, and specific antihistamines, which can amplify its side effects. Careful assessment of all current medicines by a healthcare provider is warranted when starting Bentyl.
Moreover, combining Bentyl with sedatives, opioids, or alcohol can enhance drowsiness and impair cognitive and motor function. Such combinations should be avoided or only taken under close supervision for therapeutic reasons.
It’s essential to consult healthcare providers before adding over-the-counter medications, such as Tylenol or ibuprofen, to a Bentyl regimen to prevent adverse outcomes. Antacids may interfere with Bentyl’s absorption if taken concurrently, and it’s advisable to space their administration appropriately to ensure optimal drug efficacy.
Administration & Dosage
Bentyl is typically administered orally as tablets or capsules and is commonly taken four times a day. Always follow the doctor's instructions regarding dosage, as the dosage may vary depending on the medical condition being treated. It is usually advised to take this medication 30 minutes before meals to maximize its effectiveness.
For adults, the usual starting dosage is 20 mg taken four times a day. Depending on your body's response and tolerance to Bentyl, the dosage might be increased to 40 mg four times daily. Nonetheless, always adhere to the prescribed dosage and consult with your healthcare provider before making any adjustments.
Bentyl starts to relieve symptoms within 1 to 2 hours of taking the medication. It's designed to alleviate stomach cramps and discomfort by relaxing the stomach and intestinal muscles, producing noticeable effects relatively quickly.
Bentyl can be administered as an intramuscular injection in a clinical setting. This form is particularly useful for patients who are unable to take the medication orally. However, a healthcare professional must perform this administration.
Bentyl should be stored at room temperature, away from excessive moisture, heat, and direct light to maintain its effectiveness. Make sure it is kept out of reach of children. It's also critical to ensure the medication is not exposed to humidity, as this can alter its efficacy.
Uses & Mechanism of Action
Bentyl is mainly used to address issues related to functional bowel disorders, with irritable bowel syndrome (IBS) being one of the most common conditions treated. It helps reduce symptoms such as stomach cramps and abdominal pain associated with digestive disorders.
Bentyl works by relaxing the muscles of the stomach and intestines. This reduces the cramping, bloating, and abdominal pain that often accompany IBS and similar digestive disorders. This antispasmodic action helps alleviate discomfort and improve the quality of life for those with chronic bowel conditions.
Bentyl is not classified as a controlled substance. Because of its low potential for abuse or dependence, Bentyl is available by prescription but is not subject to the restrictions that apply to controlled substances.
Bentyl effectively alleviates symptoms such as stomach cramps, bloating, gas, and abdominal pain by relaxing the smooth muscles of the gastrointestinal tract. Its efficacy in reducing digestive discomfort makes it a standard treatment option for functional bowel disorders.
Bentyl requires a prescription from a licensed healthcare provider. It is not available over the counter due to the need for professional medical evaluation and monitoring during its use.
Side Effects & Safety
Common side effects associated with Bentyl include dry mouth, dizziness, blurred vision, nausea, and constipation. Though many individuals tolerate Bentyl well, these side effects can occur and should be reported to your doctor if they persist or become bothersome.
Bentyl can cause drowsiness in some individuals. It is recommended that you avoid tasks that require alertness, such as driving or operating heavy machinery, until you understand how the medication affects you personally. Newer safety profiles highlight that even at standard therapeutic doses, patients (especially those with pre-existing neurological conditions) may experience psychosis, disorientation, and short-term memory loss.
Constipation is a noted side effect of Bentyl due to its action on the gastrointestinal tract. If constipation becomes severe or persistent, consult with your healthcare provider for management options.
Some serious side effects may occur, including confusion, hallucinations, decreased sweating, or difficulty urinating. If you experience any of these symptoms, contact your doctor immediately, as they could indicate a need to adjust your treatment.
The safety of Bentyl during pregnancy has not been fully established. Bentyl should only be used during pregnancy if clearly needed and prescribed by a healthcare provider who will consider the potential benefits against the possible risks.
Interactions & Contraindications
Combining Bentyl with Zofran (ondansetron) should be done under a healthcare professional's guidance to avoid potential interactions. Always consult your doctor before combining medications to ensure safety and effectiveness.
Bentyl is contraindicated in individuals with a history of urinary retention, bowel obstructions, or severe ulcerative colitis. It is crucial to review your medical history with your healthcare provider to determine if Bentyl is safe for you. Dicyclomine is listed on the Beers Criteria (medications potentially inappropriate for older adults) due to its high anticholinergic burden, which significantly increases the risk of confusion, falls, and acute delirium in geriatric patients.
Before combining Bentyl with Imodium (loperamide) or any other medication, consult your healthcare provider. They can determine whether combining these medications is safe based on your specific condition.
Alcohol can enhance the drowsiness and dizziness side effects of Bentyl. It is advisable to limit or avoid alcohol consumption while taking this medication to prevent adverse reactions.
Antacids can interfere with the absorption of Dicyclomine. Therefore, it is advised not to take antacids within an hour of taking your Bentyl dose. Always discuss any additional medications with your healthcare provider.
Generic & Alternatives
The generic version of Bentyl is known as Dicyclomine. It is available by prescription under this name and is typically more affordable than the brand version.
While Bentyl itself has not been widely discontinued, it may be unavailable in some areas due to supply issues or changes in manufacturing practices. Always consult with your pharmacist or healthcare provider for alternative options if Bentyl is unavailable in your area.
The cost of Bentyl can vary widely depending on whether you purchase the brand-name or generic version, as well as on insurance coverage and pharmacy location. For an accurate estimate, check with your pharmacy or healthcare provider.
Bentyl is not available over the counter. It requires a prescription from a licensed healthcare provider to ensure safety and proper use.
Like Bentyl, its generic form, Dicyclomine, is also not available over the counter. It requires a prescription due to potential side effects and the need for dosage monitoring by a healthcare professional.