MiraLAX vs Dulcolax: Which Laxative Should You Buy?
Table of Contents
- MiraLAX vs Dulcolax: Which Laxative Should You Buy?
- Quick Comparison: MiraLAX vs Dulcolax
- MiraLAX vs Dulcolax: How They Work
- MiraLAX vs Dulcolax: Effectiveness
- MiraLAX vs Dulcolax: Side Effects
- MiraLAX vs Dulcolax: Long-Term Use
- Save Money with Generic MiraLAX and Dulcolax Alternatives
- MiraLAX vs Dulcolax: Final Thoughts
- Generic MiraLAX | Polyethylene Glycol 3350
- Generic Dulcolax | Bisacodyl
- About xeteor.com
- FAQs
MiraLAX vs Dulcolax: Which Laxative Should You Buy?
When you're dealing with constipation, choosing the right laxative can make a big difference. Two of the most popular options are MiraLAX (Polyethylene Glycol 3350) and Dulcolax (Bisacodyl). While both relieve constipation, they work in very different ways—one is gentle and gradual, the other fast-acting and more intense. In this guide, we’ll compare MiraLAX vs Dulcolax to help you decide which is more effective, better tolerated, and worth buying based on your needs.
Quick Comparison: MiraLAX vs Dulcolax
Feature | MiraLAX | Dulcolax |
---|---|---|
Type | Osmotic laxative | Stimulant laxative |
Active Ingredient | Polyethylene Glycol 3350 | Bisacodyl |
Time to Work | 1–3 days | 6–12 hours |
Best For | Gentle, long-term constipation relief | Fast, short-term relief |
Common Side Effects | Gas, bloating, mild diarrhea | Cramping, urgency, dependency risk |
Form | Powder only | Tablets & suppositories |
Generic Option | Rugby PEG 3350 Powder | Major Bisacodyl Tablets |
MiraLAX vs Dulcolax: How They Work
MiraLAX is an osmotic laxative that gently draws water into the colon to soften stool and promote natural bowel movements. It’s well-suited for people who need a reliable, long-term solution to occasional or chronic constipation. Because it works gradually over 1–3 days, MiraLAX is known for being easy on the digestive system with minimal cramping.
Dulcolax, on the other hand, is a stimulant laxative. It activates the nerves in the intestines to produce contractions, which quickly move stool through the colon. This makes Dulcolax a better choice when fast relief is needed—typically within 6–12 hours—but it may cause cramping and isn’t recommended for long-term use without medical guidance.
For gentle, gradual relief, try Rugby PEG 3350 Powder – 17.9 oz or the 30-Dose 2-Pack. For faster relief, consider Major Bisacodyl 5 mg – 1000 Tablets, or save more with a 3-Pack or 6-Pack. Free shipping is included on multi-packs over $30. Single items under $30 ship for just $4.99.
MiraLAX vs Dulcolax: Effectiveness
MiraLAX is highly effective for gentle, consistent relief—especially for people dealing with chronic or recurring constipation. It typically starts working within 1 to 3 days and is ideal if you want a more natural, gradual solution that won’t cause sudden urgency or cramping.
Dulcolax, by contrast, works much faster—usually within 6 to 12 hours—and is best for occasional constipation or when you need quick, reliable results. It's often used before medical procedures like colonoscopies or for short-term digestive backup.
MiraLAX vs Dulcolax: Side Effects
MiraLAX is typically well-tolerated, even with long-term use. Some people may experience mild side effects like gas, bloating, or loose stools—but these are usually temporary and fade as your body adjusts. That’s why MiraLAX is often recommended for people with sensitive stomachs or those who prefer a gentler laxative.
Dulcolax, on the other hand, works more aggressively and may cause cramping, nausea, or diarrhea—especially if taken on an empty stomach or in higher doses. It’s effective for quick relief but not ideal for long-term use, as overuse can lead to dependency and disrupt normal bowel function.
If you’re concerned about sensitivity or want something you can take regularly, consider the Rugby PEG 3350 2-Pack. For short-term use when fast relief is needed, Major Bisacodyl Tablets (3-Pack) offer value and results—with free shipping included.
MiraLAX vs Dulcolax: Long-Term Use
MiraLAX is widely considered safe for long-term use when taken as directed. It’s often recommended by doctors for people with chronic constipation who need regular, ongoing support. Because it works gradually and doesn’t stimulate the nerves in the colon, MiraLAX is less likely to cause side effects like cramping or urgency—making it a reliable daily option.
Dulcolax, in contrast, is designed for short-term use. While it’s effective for quick relief, using stimulant laxatives regularly can lead to dependence, meaning your body may become less responsive without them. That’s why Dulcolax is best used occasionally or as advised by a healthcare professional.
Save Money with Generic MiraLAX and Dulcolax Alternatives
Looking for relief without the brand-name price? Both MiraLAX and Dulcolax have high-quality, affordable generics that work just as effectively and cost far less.
✅ Generic MiraLAX: Polyethylene Glycol 3350
Polyethylene Glycol 3350 only comes in powder form and is ideal for gentle, long-term relief. We recommend:
- Rugby PEG 3350 – 17.9 oz Single Bottle (Shipping: $4.99 unless order is over $30)
- Rugby PEG 3350 – 30-Dose 2-Pack (Free Shipping)
✅ Generic Dulcolax: Bisacodyl
Bisacodyl comes in both tablets and suppositories and is best for quick, occasional relief. We recommend:
- Major Bisacodyl 5 mg – 1000 Tablets
- 3-Pack of 1000 Tablets (Free Shipping)
- 6-Pack of 1000 Tablets (Free Shipping)
Tip: Savings packs over $30 ship free. Single bottles or boxes under $30 have a flat $4.99 shipping fee.
Please consult your doctor to ensure you're using the correct product and dosage for your needs.
MiraLAX vs Dulcolax: Final Thoughts
Choosing between MiraLAX and Dulcolax comes down to your specific needs. If you’re looking for gentle, long-term relief that’s easy on your digestive system, MiraLAX is a great choice. For fast, occasional relief—especially when you're backed up or prepping for a procedure—Dulcolax may be more effective.
Whichever you choose, be sure to follow directions and speak with a healthcare professional, especially if you're managing chronic symptoms or taking other medications.
Looking to save? We offer affordable generic options for both:
- Rugby PEG 3350 (MiraLAX alternative) – 2-Pack with Free Shipping
- Major Bisacodyl (Dulcolax alternative) – 3-Pack with Free Shipping
Note: Always consult a healthcare provider before starting any new medication, especially if you have underlying health conditions or take other prescriptions.
Generic MiraLAX | Polyethylene Glycol 3350
Rugby PEG Polyethylene Glycol 3350 Powder Osmotic Laxative - 17.9 oz | MiraLAX

$19.99
Gentle Constipation Relief with Polyethylene Glycol 3350 Powder Rugby PEG 3350 Powder is a trusted, unflavored osmotic laxative that provides gentle, effective relief from occasional...… read more
Rugby PEG 3350 Osmotic Laxative Powder - 30 Doses | MiraLAX (2 Pack)

$34.98
Rugby PEG 3350 Polyethylene Glycol Osmotic Laxative Powder - 17.9 oz - 30 Doses | MiraLAX Powder (2 Pack)What will I receive?2 bottles of Rugby...… read more
Generic Dulcolax | Bisacodyl
Major Bisacodyl 5 mg Stimulant Laxative - 1000 Tablets | Dulcolax

$11.99
Major Bisacodyl Stimulant Laxative 5 mg – 100 Tablets | Compare to 5 mg Dulcolax Buy stimulant laxatives online and save. These Major Bisacodyl 5...… read more
Major Bisacodyl Stimulant Laxative 5mg - 1000 Tablets | Dulcolax (3 Pack)

$27.99
Major Bisacodyl 5 mg – Stimulant Laxative Tablets | 3,000 Count (3 Pack) Fast-Acting Relief, Bulk Savings. Get 3,000 stimulant laxative tablets with this high-value...… read more
Major Bisacodyl Stimulant Laxative 5mg - 1000 Tablets | Dulcolax (6 Pack)

$49.99
Major Bisacodyl 5 mg – 6,000 Tablets | Stimulant Laxative | Compare to Dulcolax® Bulk Relief. Maximum Savings. This 6-pack of Major Bisacodyl 5 mg...… read more
Major Bisacodyl 10 mg - 12 Medicated Suppositories | Dulcolax

$8.99
For temporary relief of occasional constipation and irregularity and generally produces bowel movement in 15 minutes to 1 hour. Major Bisacodyl 10 mg Stimulant Laxative- 12...… read more
About xeteor.com
xeteor.com, started in 2018 is based in Las Vegas, Nevada and is online pharmacy focusing on discount over-the-counter generic medications and diabetic test strips. We find deals normally reserved for "big pharma" and offer them to the consumer at discount prices. Ranking as the #1 authorized online reseller of Major Pharmaceuticals & Rugby Laboratories products according to Trustpilot.com, xeteor.com has 8,000+ 5-star reviews online, including Amazon, eBay, Trustpilot, and Google. xeteor.com is a Google Top Quality Store, earned by merchants that provide a great shopping experience.
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Disclaimer: This post is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or another qualified health provider with any questions you may have regarding a medical condition or before starting any new treatment. Do not disregard professional medical advice or delay in seeking it because of something you have read in this post.
FAQs
Which laxative is gentler on the stomach—MiraLAX or Dulcolax?
MiraLAX (polyethylene glycol 3350) is generally gentler because it works by drawing water into the colon rather than stimulating intestinal nerves. Most people experience little or no cramping.
How fast does each product work?
Dulcolax (bisacodyl) usually produces a bowel movement in 6–12 hours. MiraLAX is slower—typically 1–3 days—but more predictable for daily use.
Can I take MiraLAX and Dulcolax together?
Occasionally, doctors pair them for colonoscopy prep but combining them for regular constipation can cause excessive diarrhea or cramping. Always ask your healthcare provider before using both at once.
Which is safer for long-term use?
MiraLAX is widely considered safe for ongoing, doctor-supervised use. Dulcolax is best reserved for short-term or occasional relief because stimulant laxatives can lead to dependency if overused.
Is one of them better before a colonoscopy?
Dulcolax tablets or suppositories are often included in bowel-prep regimens because they work quickly. Your doctor will give you exact instructions on timing and dosage.
Do either MiraLAX or Dulcolax interact with other medications?
Serious drug interactions are rare, but Dulcolax may reduce absorption of enteric-coated pills if taken too close together. When in doubt, separate doses by at least two hours and consult your pharmacist.
How do the costs compare, and are generics really identical?
Generics contain the same active ingredients and work the same way. Rugby PEG 3350 (generic MiraLAX) and Major Bisacodyl (generic Dulcolax) are typically 40-60 % cheaper than brand names—and multi-packs over $30 ship free from our store.
What should I do if I experience cramping or diarrhea?
Stop the laxative, drink plenty of fluids, and contact your healthcare provider if discomfort persists. Switching from Dulcolax to MiraLAX—or lowering the dose—often resolves cramping.