Colour Variation

Tablet coating defects are a real headache in pharmaceutical manufacturing. When the coating process isn’t properly controlled, the consequences ripple through quality, appearance, and stability—sometimes all three at once. This guide breaks down the 10 most common tablet coating problems you’re likely to encounter: blistering, cratering, cracking, picking, pitting, blooming, blushing, roughness, colour variation, and logo bridging. For each one, we cover what’s actually causing it and what you can do to fix it—practical troubleshooting grounded in real manufacturing experience, not just theory.