Regeneron, Novo Nordisk, Lilly and AbbVie stake claims on September's list of top TV ad spenders

Call it a tale of two therapeutic fields. Immunology treatments and diabetes drugs together dominated September's list of top spenders on TV ads, with four brands in each category.

Once again, Regeneron and Sanofi claimed the lead in ad spending for the month as they continuing pumping up ads for Dupixent in eczema and asthma, according to research from real-time TV ad tracker iSpot.tv. And, once again, AbbVie's trio of blockbusters for conditions such as rheumatoid arthritis and psoriasis all made an appearance—this time to the tune of $38.3 million all together.