CEPHULAC vs K+8

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. CEPHULAC and K+8 are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	CEPHULAC	K+8
Rating	70/100	New
Pharmacy pays	~$0.73 /30	$0.04 /mL
Type	RX	RX
Active ingredient	LACTULOSE	POTASSIUM CHLORIDE
Manufacturer	Sanofi Aventis US	Future Pak
Dosage forms	Solution	Tablet, extended release
Drug class	Osmotic Laxative	Osmotic Laxative
Boxed warning	None	None
Treats	Constipation, Hepatic Encephalopathy	Hypokalemia

cephulac k+8

Rating

70/100

New

Pharmacy pays

~$0.73 /30

$0.04 /mL

Type

Active ingredient

LACTULOSE

POTASSIUM CHLORIDE

Manufacturer

Sanofi Aventis US

Future Pak

Dosage forms

Solution

Tablet, extended release

Drug class

Osmotic Laxative

Boxed warning

None

Treats

Constipation, Hepatic Encephalopathy

Hypokalemia

Frequently asked questions

What is the difference between Cephulac and K+8?

Cephulac contains Lactulose, while K+8 contains Potassium Chloride — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.