K-TAB vs LACTULOSE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 17, 2026·How we rate

Possible drug interaction. K-TAB and LACTULOSE 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	K-TAB	LACTULOSE
Rating	72/100	68/100
Pharmacy pays	$0.04 /mL	~$0.73 /30
Type	RX	RX
Active ingredient	POTASSIUM CHLORIDE	LACTULOSE
Manufacturer	Abbvie	Fresenius Kabi USA
Dosage forms	Tablet, extended release	Solution, Powder
Drug class	Osmotic Laxative	Osmotic Laxative
Boxed warning	None	None
Treats	Hypokalemia	Constipation, Hepatic Encephalopathy

k-tab lactulose

Rating

72/100

68/100

Pharmacy pays

$0.04 /mL

~$0.73 /30

Type

Active ingredient

POTASSIUM CHLORIDE

LACTULOSE

Manufacturer

Abbvie

Fresenius Kabi USA

Dosage forms

Tablet, extended release

Solution, Powder

Drug class

Osmotic Laxative

Boxed warning

None

Treats

Hypokalemia

Constipation, Hepatic Encephalopathy

Frequently asked questions

Which is better-rated, K-Tab or Lactulose?

By our independent rating, K-Tab scores higher — 3.6 vs 3.4 out of 5 for Lactulose. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between K-Tab and Lactulose?

K-Tab contains Potassium Chloride, while Lactulose contains Lactulose — 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.