The "tl;dr" (too long, didn't read) scoop on Johnson & Johnson's (NYSE: JNJ) third-quarter results is that they were good overall. The company reported revenue increased 10.7% year over year to $23.3 billion. Adjusted earnings per share jumped 18.2% to $2.60, well above the consensus estimate of $2.35. With a big earnings beat, you'd probably think that the healthcare stock would have risen on Tuesday after its quarterly update. And you'd be right. J&J's shares opened around 1% higher and picked up more momentum later in the day. The gain would have probably been greater except the company's Q3 revenue came in below the average analysts' estimate of $23.7 billion. But there was more to the story for the healthcare giant than just the topline numbers. Here are three things you might have missed in Johnson & Johnson's Q3 results. Image source: Getty Images. 1. 63% of growth driven by 3 products Many investors like Johnson & Johnson in large part because of its diversification. The company has three multibillion-dollar business segments targeting different areas of healthcare. These segments market hundreds of products. In 2020, J&J claimed 28 products or platforms that generated annual sales of more than $1 billion. While Johnson & Johnson's business is highly diversified, its growth drivers in the third quarter weren't. Roughly 63% of the company's overall revenue growth came from only three products. These products generated nearly 90% of J&J's pharmaceutical sales growth. Unsurprisingly, the first product on the list is the company's COVID-19 vaccine. It raked in $502 million in the third quarter compared to no revenue in the prior-year period. Multiple myeloma drug Darzalex came in a close second. Sales for the drug in Q3 totaled $1.58 billion, up 43.7% from nearly $1.1 billion in the same quarter of 2020. J&J's third-biggest growth driver in Q3 was Stelara. The plaque psoriasis and psoriatic arthritis drug brought in $2.38 billion in sales in the quarter. This total reflected a 22.2% year-over-year increase from sales of $1.95 billion in the year-ago period. 2. COVID-19's continued big impact beyond the vaccine Johnson & Johnson's COVID-19 vaccine obviously contributed significantly to the solid Q3 results. And it could make an even bigger splash going forward. J&J is likely to benefit quite a bit from booster sales (assuming it wins authorization for boosters, as expected). However, COVID-19 also continued to impact J&J's fortunes in a major way beyond the vaccine. For example, Johnson & Johnson's consumer health business was helped by increased sales of Tylenol. The company noted that some of the sales growth for the over-the-counter medication was due to use in relieving symptoms caused by vaccinations. J&J also said that its ORSL HCP electrolyte drinks experienced sales growth in relieving symptoms of COVID-19. It wasn't all good news, though. Lockdowns in parts of the Asia-Pacific region hurt sales of K&J's baby care products. The company said that sales growth for cancer drug Imbruvica was held back in part due to COVID-19-related dynamics. In addition, J&J's orthopedic medical devices in its "spine, sports & other" category fell primarily due to the market impact of COVID-19. 3. Near an international tipping point Although Johnson & Johnson is a U.S.-based company, it has also been a major competitor in global markets for much of its history. And now, the healthcare giant is near an international tipping point. In the third quarter, J&J's U.S. sales rose 7.9% year over year to just under $12 billion. Its international sales jumped 13.8% to $11.4 billion. International markets now generate 48.7% of total revenue. At the current growth rates, more than half of Johnson & Johnson's revenue will come from outside the U.S. by this time next year. Investors should view this as a net positive. Increased geographical diversification of revenue could make Johnson & Johnson even more stable than it already is. 10 stocks we like better than Johnson & JohnsonWhen our award-winning analyst team has a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* They just revealed what they believe are the ten best stocks for investors to buy right now... and Johnson & Johnson wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of September 17, 2021 Keith Speights has no position in any of the stocks mentioned. The Motley Fool recommends Johnson & Johnson. The Motley Fool has a disclosure policy.Source