Key Takeaways Gardasil sales dropped 40% in the first nine months of 2025 due to weak demand in China and Japan.Economic weakness in China and soft demand in Japan weigh on Gardasil's sales outlook.MRK's other vaccines, including ProQuad, Rotateq and Pneumovax 23, also saw sales decline.Merck (MRK) continues to face challenges with Gardasil, its second-largest product, which is a vaccine approved for the prevention of certain cancers caused by human papillomavirus. Though the vaccine’s sales rose consistent ...

Core Insights - Merck (MRK) reported Q3 2025 adjusted EPS of $2.58, exceeding the Zacks Consensus Estimate of $2.36, with a year-over-year increase of 64% on a reported basis and 65% excluding foreign exchange [1][10] - Revenues for Q3 increased by 4% year-over-year to $17.28 billion, surpassing the Zacks Consensus Estimate of $17.06 billion [1][10] Sales Performance of Key Products - Keytruda, Merck's leading oncology drug, generated sales of $8.14 billion, an 8% increase year-over-year, but fell short of the Zacks Consensus Estimate of $8.40 billion [3] - Alliance revenues from Lynparza and Lenvima contributed positively, with Lynparza sales rising 12% to $379 million and Lenvima revenues totaling $258 million, up 2% [4] - Welireg recorded sales of $196 million, reflecting a 41% increase due to higher demand in the U.S. and early uptake in Europe [5] - HPV vaccines, Gardasil and Gardasil 9, saw a 25% decline in sales to $1.75 billion, primarily due to lower demand in China and Japan [6] - Capvaxive, a new pneumococcal vaccine, generated $244 million in sales, up from $129 million in the previous quarter [7] - The diabetes drug franchise, Januvia/Janumet, saw a 29% increase in sales to $624 million, driven by higher net pricing in the U.S. [8] Animal Health Segment - The animal health segment generated revenues of $1.62 billion, a 9% increase year-over-year, driven by higher demand for livestock products [11] 2025 Guidance - Merck narrowed its 2025 sales guidance to $64.5-$65.0 billion, reflecting a slight adjustment from the previous range [12] - Adjusted EPS guidance for 2025 was raised to a range of $8.93 to $8.98, incorporating a revised negative impact from foreign exchange [13] - The updated EPS outlook includes benefits from a revised AstraZeneca deal and improved operations, partially offset by costs from the acquisition of Verona Pharma [14][15] Market Reaction - Despite strong Q3 results, Merck's shares fell over 2% in pre-market trading due to Keytruda's weaker-than-expected sales and the narrowed sales guidance [19]

Core Insights - Merck (MRK) reported Q2 2025 adjusted EPS of $2.13, exceeding estimates, but a 7% decline year-over-year on a reported basis due to a $200 million upfront payment for a license agreement with Hengrui Pharma [2][9][17] - Revenues decreased 2% year-over-year to $15.81 billion, aligning with consensus estimates [3][9] Sales Performance of Oncology Drugs - Keytruda sales reached $7.96 billion, a 9% increase, driven by strong uptake in various cancer indications, surpassing estimates [4][9] - Alliance revenues from Lynparza and Lenvima contributed positively, with Lynparza sales up 15% to $370 million and Lenvima revenues totaling $265 million, up 5% [5] Sales Performance of Other Key Products - HPV vaccine sales (Gardasil and Gardasil 9) fell 55% to $1.13 billion due to reduced demand in China, missing estimates [7] - Sales of other vaccines showed mixed results, with Vaxneuvance increasing 20% to $229 million, while Rotateq and Pneumovax 23 saw significant declines [8][10] Animal Health Segment - The Animal Health segment generated $1.65 billion in revenues, an 11% increase year-over-year, driven by higher demand and the inclusion of Elanco aqua business sales [12] Cost and Margin Discussion - Adjusted gross margin improved to 82.2%, up 130 basis points year-over-year, attributed to a favorable product mix [13] - Adjusted R&D spending rose 15% to $3.99 billion, influenced by the upfront payment to Hengrui Pharma and increased compensation costs [14] 2025 Guidance - Merck narrowed its 2025 revenue guidance to $64.3-$65.3 billion, reflecting a less negative currency impact [15] - Adjusted EPS guidance is now between $8.87 and $8.97, accounting for a revised negative impact from foreign exchange [16] Acquisition Plans - Merck announced plans to acquire Verona Pharma for approximately $10 billion, expected to close in Q4 2025, which will enhance its portfolio in chronic obstructive pulmonary disease [19]