Lactulose Shortage Update: What Patients Need to Know in 2026

If you rely on lactulose to manage constipation or hepatic encephalopathy, you may be wondering whether there's a shortage you need to prepare for. Here's the current status and everything you need to know to protect your access in 2026.

Is Lactulose in a National Shortage in 2026?

No. As of 2026, lactulose generic oral solution is not listed on the FDA Drug Shortage Database. Generic lactulose is manufactured by multiple pharmaceutical companies in the United States, which provides meaningful supply redundancy. With approximately 900,000 prescriptions filled annually, it is one of the most commonly dispensed laxative medications in the country.

However, patients may still run into localized access issues, particularly with specific formulations or in areas with fewer pharmacy options.

Which Lactulose Formulations Are Harder to Find?

Not all lactulose formulations are equally easy to find:

• Generic lactulose oral solution (10 g/15 mL): Widely available. Most pharmacies carry 237 mL, 473 mL, and 946 mL bottles. This is the most accessible form.
• Kristalose (brand-name lactulose powder packets): Made by Cumberland Pharmaceuticals only. No generic available. Can be harder to source, especially at smaller pharmacies. Retail price can reach $385 per box, though manufacturer coupons reduce it to as little as $5 per 30-day supply.
• Lactulose rectal enema formulation: Used in acute hepatic encephalopathy; typically prepared by hospital or specialty pharmacies, not readily available at standard retail pharmacies.

Historical Context: Has Lactulose Ever Been in Shortage?

Lactulose has appeared on the FDA's shortage radar in limited contexts historically, often related to specific manufacturers experiencing supply disruptions. Because generic lactulose has multiple manufacturers, these disruptions are typically resolved faster than shortages affecting single-source drugs. The drug's essential-medicine status means there's ongoing attention to maintaining supply.

Why Lactulose Is Relatively Shortage-Resistant

Several factors make lactulose more resilient to shortages than many other medications:

1. Multiple generic manufacturers. Unlike single-source drugs, generic lactulose solution is produced by several companies, reducing supply risk.
2. WHO Essential Medicine status. Lactulose has been on the WHO Essential Medicines List since 1979, indicating it's recognized globally as a critical medication, which supports prioritization in manufacturing.
3. Simple manufacturing process. Lactulose is produced by isomerization of lactose — a relatively straightforward chemical process that doesn't rely on complex biological manufacturing.
4. Long shelf life. Stored correctly, lactulose solution remains stable at room temperature. Normal darkening of the liquid does not affect its potency.

What Patients Should Do Right Now

Even though there's no active shortage, good habits protect you against unexpected gaps:

• Refill early. Request your refill at least 7–10 days before you run out.
• Consider mail-order. A 90-day supply via mail-order pharmacy provides a buffer and is often cheaper per dose.
• Know your backup pharmacies. Identify 2–3 pharmacies in your area that regularly carry your formulation.
• Ask your provider about alternatives. Know in advance what your doctor would prescribe if lactulose were ever unavailable (e.g., PEG for constipation, rifaximin for HE).

If you can't find lactulose at your local pharmacies, medfinder can call pharmacies in your area to identify which ones have your prescription in stock. This is especially useful for HE patients who can't afford to go without treatment even briefly.

The Bottom Line on Lactulose Availability in 2026

Lactulose is not in shortage nationally. Generic lactulose solution is widely available and affordable. For patients on Kristalose powder, calling ahead is prudent. If access does become a problem, work with your healthcare provider to identify the best lactulose alternatives for your specific needs.