Miralax vs Dulcolax: Comparison Guide & Bulk Inventory
Table of Contents
- Quick Comparison: Miralax vs Dulcolax
- Miralax vs Dulcolax: Which One Should I Choose?
- Miralax vs Dulcolax: How They Work
- Miralax vs Dulcolax: Effectiveness
- Miralax vs Dulcolax: Side Effects
- Miralax vs Dulcolax: Ongoing Use Questions
- Save Money with Generic Miralax and Dulcolax Alternatives
- Miralax vs Dulcolax: Final Thoughts
- Further Comparisons
- Generic Miralax | Polyethylene Glycol 3350
- Generic Dulcolax | Bisacodyl
- About Xeteor
- Frequently Asked Questions
The choice between Miralax vs Dulcolax comes down to product type. Miralax is the polyethylene glycol 3350 osmotic laxative lane. Dulcolax is the bisacodyl stimulant laxative lane.
Quick answer: Miralax and Dulcolax are not the same. Miralax is usually chosen when you want a gradual osmotic laxative powder. Dulcolax is usually chosen when you are comparing bisacodyl stimulant laxative products, including 5 mg tablets and 10 mg suppositories.
This guide explains Miralax vs Dulcolax from a shopping and label-comparison point of view, including active ingredient, speed, dosage form, side effects, current product availability, and generic alternatives. For the broader three-product decision, see our Miralax vs Dulcolax vs Colace comparison.
⚠️ September 2026 Update: Miralax and Dulcolax Generic Availability
We are monitoring polyethylene glycol 3350 powders and bisacodyl products closely. Here is the current supply status for the main single-product routes discussed in this guide:
Geri-Care Polyethylene Glycol 3350 Powder, 17.9 oz: ✅ Stable Supply
GoodSense ClearLax Polyethylene Glycol 3350 Powder, 17.9 oz: ✅ Stable Supply
Rugby PEG 3350 Osmotic Laxative Powder, 17.9 oz: ✅ Stable Supply
Geri-Care Bisacodyl 5 mg Tablets, 100 Count: ✅ Stable Supply
Joe’s Translation: Miralax vs Dulcolax
Miralax is the water-holding powder lane. Dulcolax is the bowel-stimulating bisacodyl lane. The brand name matters less than the active ingredient and form. If you are choosing within the Dulcolax lane, compare bisacodyl tablets vs suppositories before picking a product.
Quick Comparison: Miralax vs Dulcolax
| Feature | Miralax | Dulcolax |
|---|---|---|
| Product type | Osmotic laxative | Stimulant laxative |
| Active ingredient | Polyethylene glycol 3350 | Bisacodyl |
| Common timing | 1 to 3 days | 6 to 12 hours for tablets |
| Common form | Powder mixed with liquid | Tablets and suppositories |
| Shopping lane | Gradual osmotic laxative route | Faster bisacodyl stimulant route |
| Current Xeteor pick | Geri-Care PEG 3350 Powder | Geri-Care Bisacodyl 5 mg Tablets |
Miralax vs Dulcolax: Which One Should I Choose?
Here is the simplest way to route the decision. If you are comparing Miralax vs Dulcolax, do not start with the brand name alone. Start with the active ingredient and product form.
| If You Are Looking For... | Choose This Route | Xeteor Pick | Why |
|---|---|---|---|
| Miralax-style powder | Polyethylene glycol 3350 powder | Geri-Care Polyethylene Glycol 3350 Powder, 17.9 oz | Current Xeteor Miralax-style pick. One bottle is $20.99, buy 2 for $19.99 each, or buy 3 for $16.66 each. |
| Two-bottle Miralax option | PEG 3350 powder 2 pack | Rugby PEG 3350 Osmotic Laxative Powder, 2 Pack | Good option for shoppers who want a Miralax-style polyethylene glycol 3350 powder in a 2-pack format. |
| GoodSense ClearLax route | Polyethylene glycol 3350 powder 2 pack | GoodSense ClearLax 2 Pack | Strong Miralax generic option, but currently temporarily out of stock and expected back next week. |
| Dulcolax-style tablet | Bisacodyl 5 mg tablets | Geri-Care Bisacodyl 5 mg Tablets, 100 Count | Stable tablet route for shoppers comparing Dulcolax-style bisacodyl tablets. |
| Dulcolax-style suppository | Bisacodyl 10 mg suppositories | Compare tablets vs suppositories first | Tablets and suppositories are different Dulcolax-style forms with different timing and shopping use cases. |
💡 Taking Ozempic, Wegovy, Zepbound, Mounjaro or Retatrutide?
If you are comparing constipation products while taking a GLP-1 medication, start with the product type instead of the brand name. Miralax-style polyethylene glycol 3350, Dulcolax-style bisacodyl, and fiber products work differently. See our related guides on Miralax vs Metamucil and Miralax vs Citrucel. Ask a healthcare professional if symptoms are severe, ongoing, or unusual.
Miralax vs Dulcolax: How They Work
Miralax, or polyethylene glycol 3350, is an osmotic laxative. It works by holding water in the stool, which helps soften stool and make it easier to pass. Because it comes as a powder, many shoppers also compare taste and mixing. For tips on mixing it, see our complete guide on how to make Miralax taste better.
Dulcolax, or bisacodyl, is a stimulant laxative. Dulcolax-style tablets are usually 5 mg oral delayed-release tablets. Dulcolax-style suppositories are usually 10 mg rectal suppositories. If you are choosing inside the Dulcolax lane, read our guide to bisacodyl tablets vs suppositories before choosing a product form.
Miralax vs Dulcolax: Effectiveness
Miralax is the gradual osmotic laxative route. It is commonly labeled to produce a bowel movement in 1 to 3 days. This makes it a different shopping choice than stimulant laxatives, which are usually compared when shoppers want faster label timing.
Dulcolax is the bisacodyl stimulant laxative route. Bisacodyl tablets are commonly labeled for results in 6 to 12 hours, while bisacodyl suppositories are commonly labeled for faster timing. That does not make tablets and suppositories the same product, so compare the form before choosing.
Miralax vs Dulcolax: Side Effects
Miralax may cause side effects such as gas, bloating, nausea, cramps, or diarrhea. Because it is not a stimulant laxative, many shoppers compare it when they want a gentler osmotic laxative route.
Dulcolax may cause abdominal discomfort, cramps, faintness, nausea, or diarrhea. Because bisacodyl stimulates the bowel directly, it is usually compared as the faster route, not the gentlest route. Always follow the Drug Facts label and ask a healthcare professional if you are unsure which product is appropriate.
Miralax vs Dulcolax: Ongoing Use Questions
If you are comparing these products for ongoing constipation or repeated use, ask a healthcare professional. From a shopping standpoint, Miralax is the polyethylene glycol 3350 osmotic laxative lane, while Dulcolax is the bisacodyl stimulant laxative lane.
Many stimulant laxative labels tell shoppers to ask a doctor if they need to use a laxative for more than one week. This is why Dulcolax-style bisacodyl products should be compared carefully and used only as directed on the label.
Save Money with Generic Miralax and Dulcolax Alternatives
Looking for relief without the brand-name price? Both Miralax and Dulcolax have generic alternatives based on the same active ingredient lanes. For Miralax-style products, compare polyethylene glycol 3350. For Dulcolax-style products, compare bisacodyl. To learn more about Miralax options, see our detailed guide to Miralax generic alternatives.
✅ Generic Miralax: Polyethylene Glycol 3350
Polyethylene glycol 3350 is the generic active ingredient lane for Miralax-style osmotic laxative powders. Current Xeteor options include:
- Current Xeteor Pick: Geri-Care Polyethylene Glycol 3350 Powder, 17.9 oz
- Premium Generic: GoodSense ClearLax, 17.9 oz Bottle
- Premium Generic 2 Pack: GoodSense ClearLax, 2 Pack
- Value Generic: Rugby PEG 3350, 17.9 oz Single Bottle
- Value Generic 2 Pack: Rugby PEG 3350, 2 Pack
Joe’s Translation: Generic Miralax Pricing
Geri-Care Polyethylene Glycol 3350 Powder is the current single-bottle pick. One bottle is $20.99. Buy 2 lowers the price to $19.99 each. Buy 3 lowers the price to $16.66 each. For shoppers comparing generic Miralax value, the 3 bottle route gives the best price per bottle.
✅ Generic Dulcolax: Bisacodyl
Bisacodyl is the generic active ingredient lane for Dulcolax-style stimulant laxatives. The main shopping split is tablets vs suppositories. Tablets are usually 5 mg oral delayed-release tablets, while suppositories are usually 10 mg rectal suppositories.
- Best stable tablet route: Geri-Care Bisacodyl 5 mg, 100 Tablets
- Bulk tablet route when available: Major Bisacodyl 5 mg, 1000 Tablets
- Full Dulcolax generic guide: Guide to Dulcolax Generics
- Tablet vs suppository guide: Bisacodyl Tablets vs Suppositories
Tip: Savings packs over $30 ship free. Single items under $30 have a flat $4.99 shipping fee.
Miralax vs Dulcolax: Final Thoughts
Choosing between Miralax vs Dulcolax comes down to the active ingredient and product form. Miralax is the polyethylene glycol 3350 osmotic laxative powder lane. Dulcolax is the bisacodyl stimulant laxative lane.
If you want a Miralax-style product, compare PEG 3350 powders such as Geri-Care Polyethylene Glycol 3350, Rugby PEG 3350 2 Pack, and GoodSense ClearLax 2 Pack. If you want a Dulcolax-style product, compare bisacodyl tablets first, then review suppositories separately if you need that form.
Always follow the Drug Facts label and speak with a healthcare professional if you are managing ongoing symptoms, taking other medications, preparing for a procedure, pregnant or breast-feeding, or unsure which constipation product type fits your situation.
Further Comparisons
For a more detailed look at how these laxatives compare with other popular options, explore our other comparison guides:
- Miralax vs Colace: Osmotic Laxative vs Stool Softener
- 3 Way Comparison: Miralax vs Dulcolax vs Colace
- Bisacodyl Tablets vs Suppositories: Dulcolax Generic Options Compared
Generic Miralax | Polyethylene Glycol 3350
Geri-Care Polyethylene Glycol 3350 Powder Osmotic Laxative - 17.9 oz | Compare to Miralax
$20.99
Geri-Care Polyethylene Glycol 3350 Powder Osmotic Laxative – 17.9 oz | Compare to MiraLAX® Gentle, Effective Relief for Occasional Constipation Geri-Care Polyethylene Glycol 3350 Powder… read more
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GoodSense ClearLax Polyethylene Glycol 3350 Powder Osmotic Laxative - 17.9 oz | Miralax
$19.99
GoodSense ClearLax Polyethylene Glycol 3350 Powder – 17.9 oz (30 Doses) | Compare to MiraLAX® Gentle, Predictable Relief for Occasional Constipation GoodSense® ClearLax® provides effective,… read more
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GoodSense ClearLax Polyethylene Glycol 3350 Powder Osmotic Laxative - 17.9 oz | Miralax (2 Pack)
$34.99
GoodSense ClearLax Polyethylene Glycol 3350 Powder – 17.9 oz (2 Pack) | Compare to MiraLAX® Stock Up & Save: 60 Doses of Gentle Constipation Relief… read more
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Rugby PEG Polyethylene Glycol 3350 Powder Osmotic Laxative - 17.9 oz | Miralax
$23.99
Rugby PEG 3350 Polyethylene Glycol 3350 Powder – 17.9 oz (30 Doses) | Compare to MiraLAX® Effective, Low-Cost Relief for Occasional Constipation Rugby PEG 3350… read more
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Rugby PEG Polyethylene Glycol 3350 Powder Osmotic Laxative - 17.9 oz | Miralax (2 Pack)
$42.99
Rugby PEG 3350 Polyethylene Glycol 3350 Powder – 17.9 oz (2-Pack Bundle) | Compare to MiraLAX® Stock Up & Save: 60 Doses of Gentle Constipation… read more
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GoodSense ClearLax Polyethylene Glycol 3350 Powder Osmotic Laxative Orange Flavor - 8.3 oz | Miralax
$8.99
GoodSense ClearLax Polyethylene Glycol 3350 Powder (Orange Flavor) – 8.3 oz | Compare to MiraLAX® Gentle, Orange-Flavored Relief for Occasional Constipation GoodSense® ClearLax® Orange Flavor… read more
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GoodSense ClearLax Polyethylene Glycol 3350 Powder Osmotic Laxative Orange Flavor - 8.3 oz | Miralax (2 Pack)
$16.99
GoodSense ClearLax Polyethylene Glycol 3350 Powder (Orange Flavor) – 8.3 oz (2 Pack) | Compare to MiraLAX® Stock Up & Save: Orange-Flavored Relief with Free… read more
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Generic Dulcolax | Bisacodyl
Geri-Care Bisacodyl 5 mg - 100 Tablets | Compare to Dulcolax
$8.99
Geri-Care Bisacodyl 5 mg Stimulant Laxative – 100 Tablets | Compare to Dulcolax® Predictable Overnight Relief for Occasional Constipation Get your digestive rhythm back on… read more
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Major Bisacodyl 5 mg Stimulant Laxative - 1000 Tablets | Dulcolax
$11.99
Major Bisacodyl Stimulant Laxative 5 mg – 1000 Tablets | Compare to Dulcolax® Predictable Overnight Relief for Occasional Constipation Get your digestive system back on… read more
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Health Star Bisacodyl Suppositories 10 mg - 100 Suppositories | Compare to Dulcolax Suppositories
$21.99
Health Star Bisacodyl Suppositories 10 mg – 100 Count | Compare to Dulcolax® Fast, Predictable Relief for Occasional Constipation Find fast, targeted relief from occasional… read more
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Foster & Thrive Gentle Laxative Bisacodyl 10 mg - 8 Suppositories | Compare to Dulcolax Suppositories
$6.99
Foster & Thrive Gentle Laxative Bisacodyl USP 10 mg – 8 Medicated Suppositories | Compare to Dulcolax® Fast-Acting, Predictable Relief for Occasional Constipation When you… read more
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Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice. Always read and follow the product label. If you have a medical question, ask your doctor, pharmacist, or other qualified healthcare professional.
Important: Xeteor.com sells over-the-counter products, diabetic testing supplies, vitamins, and healthcare essentials. We do not sell, dispense, or fulfill prescription medications. OTC generic comparisons are based on factors such as active ingredient, strength, dosage form, package size, labeling, availability, and practical use case. Diabetes testing supplies must be compatible with the meter or device being used. Inactive ingredients, packaging, taste, texture, sourcing, expiration dating, and fulfillment path can vary.
Frequently Asked Questions
Which is gentler: Miralax or Dulcolax?
Miralax is significantly gentler. As an osmotic laxative, it works with your body's water to soften stool gradually over 1 to 3 days, resulting in minimal cramping. Dulcolax is a stimulant laxative that causes intestinal contractions and is more likely to cause cramping and sudden urgency.
Which works faster: Miralax or Dulcolax?
Dulcolax works much faster. It typically produces a bowel movement within 6 to 12 hours. Miralax is more gradual, usually taking 1 to 3 days to take effect.
Can I take Miralax and Dulcolax together?
Taking Miralax and Dulcolax together is generally not recommended unless specifically instructed by a doctor. Combining two different types of laxatives can increase the risk of side effects like diarrhea, dehydration, and severe cramping.
Is Miralax or Dulcolax safer for long-term use?
Miralax is widely considered safe for long-term or chronic use as it works more gently with the body. Dulcolax is designed for short-term, occasional relief, as regular use of stimulant laxatives can lead to dependency.
Are generic versions of Miralax and Dulcolax the same as the brand?
Yes. Generic versions contain the exact same active ingredient at the same dosage and must meet the same strict FDA standards for safety and effectiveness. Generic Polyethylene Glycol 3350 is identical to Miralax, and generic Bisacodyl is identical to Dulcolax, offering a more cost-effective option.
What should I do if I experience side effects like cramping?
If you experience mild cramping, ensure you are drinking plenty of fluids. If cramping is severe, or if you experience diarrhea or nausea that persists, it is best to stop taking the laxative and consult your healthcare provider.
Do Miralax or Dulcolax interact with other medications?
Yes, both laxatives can potentially interact with other medications. It's especially important to speak with your doctor or pharmacist before use if you are taking diuretics (water pills) or any other prescription drugs. Always provide them with a full list of your current medications.
