KOLs vs DOLs: Which Pharma Influence Works in 2026?

For years, pharma influence was relatively easy to recognize. It lived in congress halls, advisory boards, journal publications, and the voices of respected clinical experts. If a physician, researcher, or professor shaped how others understood a therapy area, they were likely part of the KOL conversation.

That model still matters. But it no longer covers the full picture. Today, HCPs do not wait for a congress presentation or a journal issue to discover expert perspectives. They follow medical educators on LinkedIn. They attend webinars between patient consultations. They listen to podcasts, join online communities, and discuss new data in digital spaces long before a formal event takes place.

DOLs do not replace key opinion leaders, and they should not be treated as medical influencers with a larger audience. Their value lies in a different kind of influence: continuous, visible, measurable, and built through regular digital interaction.

Explanation of Key Opinion Leaders and Digital Opinion Leaders

While key opinion leaders have been around for quite some time, digital opinion leaders are much newer to the medical community, often raising questions about whether they are actually trustworthy or not. And even though the two types of leaders share a lot of similarities, there are some key differences in the definitions for both of them.

What are KOLs?

Key opinion leaders (KOLs) are experts within a specific industry or area they specialize in, trusted by others in that domain, whether it is other experts or businesses. Their opinion matters so much not just because KOLs are experts in something, but also because their source of influence often comes from their real-world knowledge and years of experience.

What are DOLs?

Digital opinion leaders (DOLs) are individuals, often medical professionals, but not exclusively, who have a strong social media presence and have influence on their community in the digital space and are trusted by their audience. However, DOLs are not to be mistaken for just social media influencers: just like KOLs, they must have clinical expertise and medical knowledge on the subject they talk about.

What Do DOLs Offer Pharma Over Traditional KOLs?

HCP demand for digital/omnichannel engagement exceeds what pharma provides. Moreover, satisfaction with digital engagement is still below 50% in major markets. One of the main reasons many pharma companies prefer to engage DOLs over KOLs is that digital opinion leaders are capable of “filling the gap” in the digital content space. Here is what DOLs can offer:

Wider and faster reach

Even though many key opinion leaders are present on digital platforms and might be active on social media, digital opinion leaders are always guaranteed to have a faster and more widespread dissemination. They can quickly raise awareness about any issues or important topics thanks to the audience they have built over the years. Most DOLs have access to global audiences and more frequent touchpoints with healthcare professionals.

Stronger engagement, and not just visibility

Digital opinion leaders often engage with their audience directly, whether it is through online sessions, comment sections, direct messages, or other methods. Thanks to an ability to immediately receive feedback from the HCPs, DOLs have a better understanding of the audience’s needs and have higher trust through ongoing dialogue, when key opinion leaders usually have a one-way communication with their target audience through lectures, publications, or presentations.

More agility and speed

DOLs can react to new data, congress updates, guideline changes, and market events much more quickly, as most of the time, all of these events are happening in the digital space, where they already work and spend most of the time. KOL activities usually require long planning cycles, formal agreements, and event scheduling, while DOLs, as digital natives, can react and share their opinions almost right away, while still having the same status and respect as KOLs.

Access to new audiences

DOLs tend to interact with a wider variety of audiences, thanks to which they can reach groups that pharma and healthcare often struggle to engage through traditional digital channels. For example, it is much easier for DOLs to interact with younger HCPs, digital-first physicians, nurses, and pharmacists, some patients, and community specialists. Traditional key opinion leaders mostly influence more senior specialists, medical congress attendees, and academic centers, and even though they definitely have a strong impact on others as well, it’s sometimes harder for them to expand their reach beyond top experts and companies.

More authentic, relatable communication

Even though DOLs are as reputable and trustworthy as KOLs, have obtained medical education, and hold the same level of credibility, DOL content often feels less formal and more practical. Their communication is easier to understand and relate to, while KOL communication may be more academic and formal.

Why Pharma Influence Models Are Being Re-Evaluated

Traditional KOL-based strategies were designed for a different kind of interaction. And while they are still efficient in some cases, a new, more modern approach is taking over. Here is why pharma influence models are being re-evaluated.

Shift to omnichannel

Pharma no longer focuses on communication through a few controlled channels. When it used to be just a couple of engagement strategies, now, it is a variety of digital platforms and methods of communication that are not limited to one place and a small audience. Today, communication happens across conferences, email, webinars, portals, rep visits, social platforms, and many other ways. Traditional KOL models were built for more event-driven communication and in-person engagements, but modern influence models now require continuous influence across different touchpoints.

HCP behavior and needs have changed

Traditional methods of sharing information are no longer as efficient as they were before. Now, HCPs consume information a bit differently, with the main life sciences trends being more focused on digital learning, less time for congresses, and a preference for short-form content. Many HCPs follow LinkedIn experts, webinar speakers, podcast hosts, and online educators, all of whom have built their digital platforms over the years, speaking on important topics and sharing medical insights. Influence is now built through ongoing digital presence, and not just traditional academic authority.

The rise of customer-centric and personalized engagement strategies

Pharma is rapidly moving toward segmentation and personalization. Most key opinion leaders don’t have enough time or resources to create tailored messages for different audiences, which is why pharma companies can’t always rely on them to influence as many people as they want to. Influence models are becoming more diverse and flexible, and digital opinion leaders are those whose voices are more likely to be heard by different audiences.

KOLs vs. DOLs: Key Differences That Matter

The main difference between KOLS and DOLs is their area of influence. KOL status is usually built through scientific authority. DOL influence is usually proven through digital network behavior. One person can be both, but the way their influence is identified, activated, and measured is different.

Here is a side-by-side comparison of key and digital opinion leaders.

	KOL	DOL
Core role	Provide scientific authority and credibility	Provide digital reach and continuous engagement
Main strengths	Authority, deep industry expertise	Visibility, accessibility, online influence
Typical background	Physicians, researchers, professors	HCPs, researchers, educators, digital-active experts, and previous KOLs
Primary channels	Congresses, publications, advisory boards, events	Social media, webinars, podcasts, online communities, digital platforms
Type of communication	Formal, evidence-based, event-driven	Evidence-based, ongoing, fast, conversational
Engagement frequency	Occasional, milestone-based	Continous
Reach	Limited	Broad and scalable
Measurability	Harder to measure influence directly	Digital metrics allow clear performance tracking
Strategic value	Strengthen brand reputation	Maintains brand presence and visibility
Risk if used alone	Limited reach, low engagement frequency	Lower perceived authority
Optimal approach	Part of the hybrid model	Part of the hybrid model

When to Choose KOLs and DOLs

Even though DOLs surpass KOLs when it comes to online engagement strategies and digital activities, there are still many situations where working with key opinion leaders may be the right decision for a company. Here is when to choose KOLs and when to choose DOLs.

Choose KOLs when scientific authority is a number one priority

KOLs’ credibility comes from their academic expertise. Although digital opinion leaders should not be considered “less qualified” experts, they may sometimes lack experience in scientific thought leadership in live and academic event settings, where KOLs are traditionally very active.

According to recent industry surveys, up to 80% of healthcare professionals report concerns about pharma’s digital content, with many mentioning selective data presentation as a key issue. In situations where credibility and scientific validation are critical, the involvement of recognized key opinion leaders can help strengthen confidence in the message and ensure that communication is perceived as reliable and unbiased.

Choose DOLs when you want to focus on reach and engagement

DOLs are more effective when the goal is to communicate frequently, widely, and across multiple channels. DOLs are not only experts who focus on digital activity, but also professionals who invest significant effort into building their own platforms and growing an active audience. This means they understand exactly who their readers or listeners are and how to engage with them effectively.

DOLs are best suited for scale, speed, and interaction, whether it’s supporting digital campaigns, participating in webinars, creating content, or leading awareness initiatives.

Choose KOLs for early-stage strategy

When you are just starting your journey and are not sure how much time you will be able to dedicate to marketing efforts and promotional materials, it is often best to rely on the support of a KOL. KOLs can be especially helpful for less frequent initiatives and situations where there is a need to shape the narrative, without necessarily increasing digital engagement or maintaining a strong presence on online platforms.

When the goal is to move slowly but steadily, KOLs can help establish authority, provide expert input, and build clinical credibility, without requiring long-term commitment or limiting your strategy to a single KOL-driven approach.

Choose DOLs for ongoing communication

If your strategy is defined and your primary goal is not only to ensure your brand is uniquely positioned but also to regularly communicate with its audience, DOLs are the right choice. Digital opinion leaders can support continuous education, campaign execution, digital discussions, and other online activities that help build a trusted dialogue with leads and customers. DOLs create content faster, are able to adapt to different formats, know how to work across channels, and engage with their audience regularly, which makes them a perfect fit for a communication strategy.

Hybrid Model: Combining KOLs and DOLs

There are many situations where choosing both KOLs and DOLs can bring its own benefits. As you can see for yourself, companies of all sizes are likely to encounter situations where they might need both. Which is why modern pharma strategies will achieve the best results when KOLs and DOLs are not treated as alternatives but as complementary roles within one communication ecosystem. This is how you can make it work.

Align engagement with the product lifecycle

Different stages of the brand journey require different types of influence. Think about how both key opinion leaders and digital opinion leaders can contribute to your brand’s authority and trustworthiness, and map out each stage of the journey with a detailed breakdown of how KOLs and DOLs can support your goals. For example, you can follow this scheme or create a similar one:

• Early development -> KOL-led communication
• Launch phase -> KOL and DOL collaboration and engagement
• Post-launch -> Stronger DOL involvement
• Mature brands -> Ongoing DOL engagement with KOL support

This scheme will not look the same for every brand. It all depends on the medical opinion leaders you work with. In some areas, DOLs may be more prevalent, while in others, you may find more KOLs to collaborate with.

Combine authority with reach

KOLs can help build trust, but their communication is often limited to certain events and formats. DOLs expand the reach of the message through digital channels, helping maintain visibility between major milestones, but they might not always be available for offline activities like conferences or congresses. While in some cases it might be useful to stick with just one influence format, especially if the company is in its early stages of marketing and development, most of the time, combining reputation-based KOLs and DOLs that are data-driven and focused on digital activities can create a balanced and effective network of experts.

Build an always-on communication strategy

Around 67% of healthcare professionals who report being satisfied with the quality of content are also highly satisfied with their overall experience, and are significantly less likely to feel overwhelmed by the frequency of communication. Communicating with your audience, especially through high-quality content, is one of the best ways to meet the demand and build a trusted relationship with potential customers.

Traditional key opinion leaders strategy often happens around congresses, publications, or launches. But with a hybrid model, brands can stay visible all year round. Use KOLs for key moments, like discussion of the latest research or presentation at an event, and DOLs for continuous education and brand awareness, including such activities as campaign support or online discussions. It is up to you to decide when and where to engage digital opinion leaders and key opinion leaders, but as a rule of thumb, you should plan the combination of both in advance.

Integrate KOLs and DOLs into the same content ecosystem

Don’t treat opinion leaders as separate channels. Instead, both should become a part of one coordinated communication plan that considers both online influence and real-life impact. Align both KOL and DOL activities so that all interactions support the same strategic message.

Podcasts, along with other approaches like online campaigns, webinars, and others, show how expert authority and digital communication can work together within one coordinated content strategy, where each format supports the same message and strengthens overall engagement.

Focus on long-term relationships, not only one-time collaboration

Truth be told, one-time collaborations are not always a bad thing, especially when they are tied to specific events or created as part of a series, such as podcasts. There is no need to build long-term relationships with every opinion leader you work with; however, it is important to develop ongoing partnerships with selected experts, ideally including both DOLs and KOLs. Their support can help businesses build trust with their audience and improve engagement, regardless of the niche or area of expertise. Having experts who understand your values and act as the voice of the brand makes it more likely that your message will be heard.

Explore creative formats

As obvious as it might sound, sometimes the best ideas are rarely explored due to the fear of failing. However, as the example of other companies has shown, a hybrid approach succeeds most of the time, often bringing unexpected results. Here are some examples:

• A good example of integrating KOLs and DOLs into one content ecosystem is the Pharma Talks podcast by Viseven. In this series, the host and CEO of Viseven, Nataliya Andreychuk, brings together industry experts, medical specialists, and digital leaders to discuss trends in pharma, digital transformation, and customer engagement. The podcast has already reached over 500,000 views, showing that the industry is ready for open and honest conversations about what works, what doesn’t, and how communication strategies are evolving.

• Another well-known example of hybrid influence is how Novartis has worked with medical experts, patient advocates, and digital speakers during global awareness initiatives such as World Sickle Cell Awareness Day. The company combined scientific input from specialists with digital storytelling, live online events, and social media discussions. During these campaigns, expert opinions, patient stories, and educational materials were shared across multiple digital platforms.

There are many ways to combine KOL and DOL strategies, and it is important to explore different approaches to find the one that best fits your business needs and communication goals.

Summing Up

Pharma is evolving from strictly event-based engagement strategies toward continuous, data-driven interactions. Unlike KOLs, digital opinion leaders are present on far more platforms and often offer more opportunities for collaboration. However, this does not mean that the age of KOLs is over. With rapid digital transformation, it has become essential to build a strong online presence and digitize marketing efforts, but that does not make key opinion leaders any less valuable. Striking the right balance between KOL and DOL strategies allows companies to expand their reach while continuing to support better patient outcomes.