MIGRAINE PITCH GIVES LADY GAGA PAIN IN THE BUTT!

LOOPY Lady Gaga is being slammed as a greedy sellout for shilling a prescription migraine medicine, and her paid promotion is becoming a massive headache for the pop performer, sources spill.

Fans were livid after Gaga, 37, posted a photo of herself on Instagram plastered with the logo for Pfizer’s Nurtec ODT — along with safety information and a glowing blurb for the drug.

The Bad Romance singer even gushes, “I’ll never forget wishing I had found it sooner.”

The Grammy-winning gal has endured migraines since she was 14 and has been plagued with a slew of health woes — including fibromyalgia, a chronic illness so painful and debilitating it’s forced her to cancel concerts.