each tablet contains 150mg ranitidine (as hydrochloride)

Fast-Acting
Relief from 30 minutes.
Faster relief than Proton Pump Inhibitors (PPIs).

Long-Lasting
With one easy-to-swallow tablet,
Zantac 150mg provides up to 12 hours relief.
Zantac provides longer-lasting relief than antacids and alginates.

Convenient
Can be taken with or without food.
Unlike antacids and alginates that require multiple doses a day, Zantac can provide up to 12 or 24 hour relief with just one tablet.Swallow 1 tablet whole (do not chew) with water as soon as you have symptoms, at any time day or night. If symptoms return or persist for more than one hour, take another tablet. Maximum 2 tablets in 24 hours. Do not use for more than 14 days continuously.