s53 white oblong pill
The pill with imprint S53 (White, Oval, 18 mm) has been identified as Extra Strength Headache Relief acetaminophen 250 mg / aspirin 250 mg / caffeine 65 mg and is used for Migraine, Osteoarthritis, Pain/Fever, and Headache.
G037 White Oblong Pill: Hydrocodone Identifier & Guide
