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The over-the-counter supplements Dr Amir Khan says you should mention to your GP

Published June 2, 2026 · Updated June 2, 2026 · By Sandra Lopez

The Over-the-Counter Supplements Dr. Amir Khan Advises You Should Discuss with Your GP

The over the counter supplements Dr Amir - When it comes to health, many people turn to over-the-counter (OTC) supplements as a natural way to support their well-being. However, Dr. Amir Khan, a renowned GP and advocate for preventive healthcare, emphasizes that not all these products are created equal. In a recent video, he highlights the importance of consulting with a healthcare professional before incorporating any supplements into your routine. While these supplements can offer benefits, they also carry risks, especially when taken in combination with other medications.

Why GP Consultation Matters

Dr. Khan explains that even seemingly harmless supplements can interact with prescription drugs, leading to unintended side effects. "Many people don’t realize that what they take for a quick fix could disrupt their treatment plan," he states in the video. For example, certain OTC vitamins or minerals may interfere with blood thinners or diabetes medications. "A doctor can help identify potential conflicts and adjust dosages as needed," he adds.

"It’s easy to assume that supplements are safe because they’re available without a prescription, but that’s not always the case," Dr. Khan says.

Top Supplements to Mention to Your GP

Dr. Khan outlines several OTC supplements that are commonly used but should be discussed with a GP. First on his list is vitamin D, which is often taken to support bone health and immune function. While it’s widely available, he notes that excessive intake can lead to hypercalcemia, a condition where calcium levels in the blood become too high. "This is especially important for individuals with kidney disease or those on calcium-binding medications," he says.

Next, omega-3 fatty acids are frequently recommended for heart health and inflammation reduction. However, Dr. Khan warns that these supplements can lower blood pressure and interact with anticoagulants. "If you’re already on medication for hypertension or blood clotting, taking omega-3s without checking with your doctor could be risky," he cautions.

"Omega-3s are beneficial, but their impact on blood pressure and clotting can vary depending on your medical history," Dr. Khan clarifies.

Another supplement highlighted is magnesium, which is popular for muscle relaxation and stress relief. While generally safe, Dr. Khan mentions that high doses can cause digestive issues and may interact with antibiotics or diuretics. "People with gastrointestinal conditions or those taking certain medications should be careful with magnesium intake," he advises.

Dr. Khan also recommends probiotics for gut health, but he points out that their effectiveness depends on the specific strain and dosage. "Not all probiotics are the same—some are designed for short-term use, while others require long-term commitment," he explains. He suggests discussing the type and purpose of probiotics before starting a regimen.

Emerging Trends in Supplement Use

As interest in holistic health grows, more individuals are exploring supplements like collagen and curcumin for skin health and anti-inflammatory properties. Dr. Khan acknowledges these trends but stresses that their benefits aren’t universally applicable. "Collagen, for instance, is often marketed for joint health, but its effects can differ based on age and individual needs," he says.

He also mentions the popularity of vitamin C and zinc as immune boosters, particularly during cold and flu season. While these are safe for most people, Dr. Khan notes that overuse can lead to kidney stones or gastrointestinal discomfort. "Even natural products can have side effects if taken in excess," he warns.

Preventive Measures and Personalized Care

Dr. Khan encourages patients to view supplements as part of a broader strategy for health maintenance rather than a standalone solution. "They’re most effective when used alongside a balanced diet and lifestyle changes," he says. He also highlights the importance of tracking symptoms and monitoring for adverse reactions. "If you experience unusual fatigue, nausea, or changes in your menstrual cycle, it could be a sign of an interaction."

He recommends that patients ask their GP about the recommended dosage, potential interactions, and long-term effects** of any supplement. "Your doctor can also help you understand whether a supplement is necessary or if your body is already getting enough from food," he adds.

In addition to individual supplements, Dr. Khan discusses the role of multivitamins in overall health. He explains that while they can fill nutritional gaps, they might not be suitable for everyone. "For example, high-dose B vitamins can be problematic for people with epilepsy or those on certain medications," he says.

How to Approach Your Doctor

Dr. Khan suggests that patients bring a list of supplements they’re considering to their GP appointment. "This includes the brand, dosage, and reason for taking them," he advises. He also recommends discussing any existing conditions or medications to ensure safety. "Your GP can provide tailored recommendations and monitor your progress over time," he says.

He emphasizes that supplements shouldn’t replace prescribed treatments. "They’re meant to complement, not substitute, your healthcare plan," he clarifies. Dr. Khan also encourages patients to be honest about their supplement use, even if they think it’s minor. "What seems like a small addition could have a significant impact on your health," he points out.

Overall, Dr. Khan’s message is clear: supplements can be a valuable tool, but their use requires careful consideration. "By speaking with your GP, you can make informed decisions that align with your unique health needs," he concludes. His video has sparked conversations about the role of OTC supplements in modern healthcare, reminding people that even the most common products deserve attention.

As the article notes, the process of logging in might require refreshing the page or navigating to another section, ensuring that users can access the full content without interruptions. This underscores the importance of maintaining a seamless digital experience while promoting awareness about the potential benefits and risks of supplements. Whether you’re considering a new product or simply curious about your options, Dr. Khan’s guidance offers a practical framework for navigating the world of OTC supplements safely.

In summary, Dr. Khan’s advice underscores that supplements, while convenient, are not a one-size-fits-all solution. By discussing these products with a GP, individuals can ensure they’re making choices that support their health without compromising their treatment plan. This proactive approach not only enhances the effectiveness of supplements but also minimizes the risk of complications, fostering a more informed and healthier lifestyle.