The Benspeed tablet is a combination medication formulated to alleviate pain and discomfort associated with muscle spasms, particularly in the abdomen and during menstruation [1.6.2, 1.6.3]. It contains two active ingredients: Dicyclomine, an antispasmodic agent, and Mefenamic Acid, a nonsteroidal anti-inflammatory drug (NSAID) [1.6.2]. Dicyclomine works by relaxing the muscles in the stomach and intestines, which stops sudden, painful contractions [1.6.6]. Mefenamic Acid works by blocking the production of prostaglandins, which are chemicals that cause pain and inflammation [1.6.6].
While effective, this dual-action mechanism means the potential side effects are a combination of those from both an anticholinergic drug and an NSAID. It is essential for patients to be aware of the full spectrum of possible reactions.
Common Side Effects
The most frequently reported side effects are often mild and may decrease as your body adjusts to the medication. These are primarily a blend of the effects from both active components.
-
From Dicyclomine (Anticholinergic effects):
- Dry mouth [1.4.2]
- Dizziness and Drowsiness [1.4.2, 1.4.6]
- Blurred vision [1.4.2]
- Nausea [1.4.6]
- Nervousness or weakness [1.4.5]
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From Mefenamic Acid (NSAID effects):
- Stomach pain, heartburn, and indigestion [1.5.2]
- Diarrhea or constipation [1.5.6]
- Headache [1.5.6]
- Gas or bloating [1.5.6]
Combination product information confirms that dizziness, dry mouth, nausea, drowsiness, and dyspepsia are common [1.6.2, 1.6.10]. Should any of these effects persist or worsen, it is important to contact a healthcare provider. To manage dry mouth, suggestions include frequent mouth rinses, good oral hygiene, and using sugarless candy [1.6.2].
Serious Side Effects
Both Dicyclomine and Mefenamic Acid carry risks of more severe adverse reactions that require immediate medical attention.
Serious Risks Associated with Mefenamic Acid (NSAID):
- Cardiovascular Events: NSAIDs can increase the risk of serious, and sometimes fatal, heart attack and stroke. This risk may appear early in treatment and can increase with longer use [1.5.1, 1.5.3]. Patients with existing heart disease are at greater risk [1.5.1]. This medication should not be used before or after heart bypass surgery [1.5.1].
- Gastrointestinal Bleeding: This medication can raise the chance of severe stomach and intestinal problems like ulcers and bleeding, which can be fatal and occur without warning [1.5.1, 1.5.9]. The risk is higher in older adults and those with a prior history of GI ulcers or bleeding [1.5.1]. Symptoms include bloody or black, tarry stools, and vomit that looks like coffee grounds [1.5.6].
- Kidney Damage: Long-term use of NSAIDs can lead to renal injury. The drug should not be given to patients with significantly impaired kidney function [1.5.9].
- Severe Skin Reactions: In rare cases, severe skin reactions such as Stevens-Johnson syndrome may occur, which can be life-threatening [1.5.1, 1.5.7]. Seek immediate help for any new rash, blisters, or peeling skin [1.5.7].
- Liver Problems: Signs of liver issues include dark urine, fatigue, yellowing skin or eyes (jaundice), and upper stomach pain [1.5.2, 1.5.7].
Serious Risks Associated with Dicyclomine (Anticholinergic):
- Heat Stroke: Dicyclomine decreases sweating, which can make you more likely to get heat stroke in hot weather or during strenuous activity [1.4.3]. Avoid overheating and drink plenty of fluids [1.4.3].
- Central Nervous System Effects: In some individuals, particularly the elderly, dicyclomine can cause confusion, disorientation, hallucinations, or short-term memory loss [1.4.4, 1.4.7].
- Vision and Heart Issues: Seek help for eye pain, vision changes (like seeing rainbows around lights), or a fast/irregular heartbeat [1.4.3].
Comparison of Active Ingredient Side Effects
| Feature | Dicyclomine (Antispasmodic) | Mefenamic Acid (NSAID) |
|---|---|---|
| Primary System Affected | Nervous System (Anticholinergic) | Gastrointestinal, Cardiovascular |
| Common Side Effects | Dry mouth, blurred vision, dizziness, drowsiness [1.4.2] | Stomach pain, heartburn, nausea, diarrhea [1.5.2] |
| Key Serious Risks | Confusion, hallucinations, heat stroke, fast heartbeat [1.4.4] | Heart attack, stroke, stomach ulcers/bleeding [1.5.1, 1.5.9] |
| Contraindications | Glaucoma, myasthenia gravis, severe ulcerative colitis, bowel obstruction [1.4.1, 1.4.10] | Aspirin allergy, history of GI bleeding, kidney disease, recent heart surgery [1.5.1] |
Precautions and Contraindications
Before taking Benspeed, inform your doctor about your entire medical history. This drug is not suitable for everyone.
Do not take this medication if you have:
- An allergy to Dicyclomine, Mefenamic Acid, aspirin, or other NSAIDs [1.5.1].
- Glaucoma, an enlarged prostate, or blockage in the urinary tract [1.4.4, 1.4.5].
- A blockage in your gastrointestinal tract or severe ulcerative colitis [1.4.1].
- Myasthenia gravis [1.4.1].
- A history of stomach ulcers or bleeding [1.5.9].
- Severe kidney disease, liver disease, or heart failure [1.5.1, 1.5.9].
Use with caution and medical advice if you:
- Are pregnant or breastfeeding. NSAIDs should be avoided, especially in the third trimester of pregnancy, and the combination is not recommended during breastfeeding [1.6.5, 1.5.8].
- Are over 65, as you may be more sensitive to side effects [1.4.3].
- Consume alcohol, as it can increase drowsiness and the risk of stomach problems [1.6.3].
Conclusion
The Benspeed tablet can be an effective treatment for specific types of pain by targeting both muscle spasms and inflammation. However, its benefits must be weighed against its potential side effects, which stem from both of its active ingredients. The risks associated with the NSAID component—particularly cardiovascular and gastrointestinal damage—are serious and warrant careful consideration. Always take this medication exactly as prescribed, preferably with food to reduce stomach upset [1.6.2], and for the shortest duration necessary. Consult a healthcare professional immediately if you experience any severe or concerning symptoms.
Authoritative Link: For more details on Mefenamic Acid, you can visit MedlinePlus [1.5.6]
