Lactulose is a prescription laxative clinically proven to work in 8 out of 10 patients — drawing water into your colon to soften stool and get things moving, gently and on your body’s own terms.
Clinically proven to work in 8 out of 10 constipated patients
Softens stool naturally by pulling water into your colon
Gentle enough for daily use — no harsh stimulants, no sudden urgency
Licensed medical provider consultation included
Get it today at your local pharmacy
Lactulose is a synthetic sugar that works differently from harsh stimulant laxatives. Instead of forcing your gut to contract, it pulls water from your body into your colon — naturally softening stool and making bowel movements easier and more comfortable. In clinical studies, lactulose nearly doubled the number of days patients had a bowel movement. Most people see results within 24–48 hours.
Whether you’re managing long-term chronic constipation or just need something that actually works quickly without the drama, lactulose is designed for consistent, reliable use. Available as an oral liquid or powder you can mix right into water, juice, or milk to improve the taste.
Your prescription is sent directly to a pharmacy near you. Pick it up same-day and use your insurance or a discount coupon like GoodRx to pay. Our fee covers your consultation only.
CMO, Bummed
Constipation Rx
Lactulose draws water into the colon to soften stool and stimulate bowel movements — without harsh ingredients or dependency risk. Most patients see results within 24–48 hours.
Complete a quick medical intake. Tell us your symptoms in a secure, 2-minute online form.
Reviewed by a licensed clinician. A board-certified provider reviews your intake and prescribes treatment if appropriate.
Pick up your prescription same-day at a pharmacy near you.
FAQs
Visit our FAQs page for more information.
First of all, we recommend lifestyle measures, including the following:
Additionally, we usually recommend starting with a fiber supplement that contains both soluble and insoluble fibers. Adding a prebiotic and a probiotic can help support the gut microbiome, which plays a crucial role in bowel regularity. A magnesium supplement can also be helpful for softening stools. If you’re still having trouble going, our daily laxative option is a gentle way to keep things moving. This is ideal for chronic constipation that hasn’t responded to additional fiber support.
Lactulose is a synthetic sugar used to treat constipation. It works by pulling water into the colon, which softens stool and makes bowel movements easier. In clinical studies, it was effective in 8 out of 10 constipated patients vs. 33% on placebo.
Lactulose comes as a liquid or powder. You can mix it with water, juice, or milk to improve the taste.
Take 15 ml- 30ml orally once daily. Titrate to 1-2 soft bowel movements daily. Max 60 mL daily.
Most people have a bowel movement within 24–48 hours of taking their first dose.
Take 15ml daily for 7 – 10 days. Reassess in 2 weeks.
Some people experience gas, bloating, or mild nausea, especially when first starting. These typically ease as your body adjusts. Consult your medical provider if you experience severe diarrhea, stomach cramping, or vomiting.
People with diabetes or those on a low-lactose or low-galactose diet should discuss lactulose with their medical provider before use. Tell your provider about all medications you’re taking, especially antacids or other laxatives.
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