wellrank.ai
Doctor's Best logo

Doctor's Best

doctorsbest.com

Science based value brand known for high absorption chelated magnesium.

Doctor's Best is losing the AEO war.

Not cited in a single tracked AI answer since Jun 11, 2026, down from a peak of 58% visibility in magnesium on Jun 11, 2026. This page and its history stay public, and recovery shows here the day it happens.

AI Visibility

Visibility trend

Magnesium, daily share of AI answers mentioning Doctor's Best, through Jun 13, 2026.

0.0%

Last cited Jun 11, 2026 · peak 58% on Jun 11

By engine

Where Doctor's Best is strong, and where it is invisible.

  • No engine data yet.

Mention sentiment

Tone of AI mentions across all tracked answers.

  • 8 positive mentions
  • 0 neutral
  • 0 mixed or cautious

Recent AI answers mentioning Doctor's Best

Google AIJun 11, 2026, 19:56 UTC
I cannot fall asleep at night. What supplements actually help?

It can be really frustrating when you're struggling to fall asleep. There are several supplements that have research supporting their effectiveness for sleep, but it's important to remember that what works for one person might not work for another, and it's always a good idea to chat with your doctor before starting any new supplement, especially if you have underlying health conditions or are taking other medications. Here are a few supplements that are commonly recommended and have some scientific backing: Melatonin: This is probably the most well-known sleep supplement. Melatonin is a hormone your body naturally produces that helps regulate your sleep-wake cycle. Supplementing with melatonin can be helpful for people with insomnia, jet lag, or shift work sleep disorder. Why it helps: It signals to your body that it's time to wind down and prepare for sleep. Brands to consider: Nature Made Melatonin: This is a widely available and reputable brand known for its quality control. They offer various dosages. NOW Foods Melatonin: NOW Foods is another trusted brand that offers a good value for melatonin supplements. Pura Vida Melatonin: If you prefer a more "natural" or clean label approach, Pura Vida often focuses on simple ingredients. Magnesium: Magnesium is a mineral involved in hundreds of bodily processes, including nerve function and muscle relaxation, both of which are crucial for sleep. Some research suggests that magnesium deficiency can be linked to sleep problems. Why it helps: It can help calm the nervous system and relax muscles, making it easier to fall asleep and stay asleep. Brands to consider: Magnesium Glycinate (like Thorne Research Magnesium Bisglycinate or Life Extension Magnesium Caps): Magnesium glycinate is often recommended for sleep because it's well-absorbed and less likely to cause digestive upset. Thorne and Life Extension are known for their high-quality, bioavailable forms of minerals. Pure Encapsulations Magnesium Glycinate: Another excellent choice for a high-quality, hypoallergenic magnesium supplement. L-Theanine: This is an amino acid found primarily in tea leaves. It's known for its calming effects without causing drowsiness. Why it helps: L-Theanine can promote relaxation by increasing alpha brain wave activity, which is associated with a state of wakeful relaxation, and by influencing neurotransmitters like GABA, dopamine, and serotonin, all of which play a role in mood and sleep. Brands to consider: NOW Foods L-Theanine: A reliable and affordable option. Source Naturals L-Theanine: Another reputable brand that offers good quality L-Theanine. Doctor's Best L-Theanine: Often praised for its purity and effectiveness. Valerian Root: This is an herb that has been used for centuries as a sleep aid. It's thought to work by increasing GABA levels in the brain, which has a calming effect. Why it helps: It can help reduce the time it takes to fall asleep and improve sleep quality for some people. Brands to consider: Nature's Way Valerian Root: A long-standing and trusted brand in the herbal supplement space. Gaia Herbs Valerian Root: Gaia Herbs is known for its focus on the quality and potency of their herbal extracts. NOW Foods Valerian Root: Offers a cost-effective option. Important Considerations Before You Buy: Dosage: Start with the lowest recommended dose for any supplement and see how you react. It's better to gradually increase if needed. Purity and Third-Party Testing: Look for brands that are transparent about their sourcing and manufacturing. Certifications from organizations like NSF International, USP, or ConsumerLab.com can indicate a product has been tested for purity and potency. Form: Supplements come in various forms (pills, capsules, liquids, powders). Choose what's easiest for you to take consistently. Interactions: As mentioned, talk to your doctor. Some supplements can interact with medications you might be taking for other conditions. Underlying Causes: While supplements can be helpful, they don't always address the root cause of insomnia. Factors like stress, diet, exercise, and sleep hygiene all play a significant role. Consider exploring these areas too! I hope this helps you find some relief and get a better night's sleep!

Mentioned in position 8 of 10

Read full answer with sources →
Google AIJun 11, 2026, 19:56 UTC
Is it safe to take magnesium every night?

Taking magnesium every night can be safe and even beneficial for many people, but it's always a good idea to consult with your doctor before starting any new supplement regimen, especially if you have any underlying health conditions or are taking other medications. Magnesium is an essential mineral that plays a crucial role in numerous bodily functions, including muscle and nerve function, blood sugar control, and blood pressure regulation. Many people don't get enough magnesium from their diet alone, and supplementation can help fill that gap. When considering magnesium supplements, here are a few brands that are generally well-regarded for their quality and variety of forms: NOW Foods: They offer a wide range of magnesium supplements, including magnesium glycinate, citrate, and oxide. NOW Foods is a reputable brand known for its good quality and affordability. Magnesium glycinate is often recommended for its gentle nature on the stomach and good absorption, making it a popular choice for evening use. Pure Encapsulations: This brand is known for its high-quality, hypoallergenic supplements. They offer various forms of magnesium, and their products are often recommended by healthcare professionals. Doctor's Best: Doctor's Best High Absorption Magnesium is a popular choice that uses a specific form of magnesium (magnesium glycinate) to enhance absorption and minimize digestive upset. Life Extension: They offer a "Magnesium Caps" product that combines different forms of magnesium for broad-spectrum benefits. Life Extension is a company focused on research and longevity. Why these brands? Reputation: They have established reputations for producing high-quality, consistent products. Variety of Forms: Different forms of magnesium have different absorption rates and can affect people differently. These brands offer choices like magnesium glycinate, citrate, malate, and oxide, allowing you to find one that suits you best. For evening use, magnesium glycinate is often preferred because it's less likely to cause diarrhea and is known for its calming properties. Third-Party Testing: Many reputable supplement brands engage in third-party testing to verify the purity and potency of their products, giving consumers more confidence in what they are taking. Important Considerations: Dosage: The recommended daily allowance for magnesium varies by age and sex. Do not exceed the recommended dosage on the product label or as advised by your doctor. Side Effects: While generally safe, too much magnesium can cause digestive issues like diarrhea, nausea, and abdominal cramping. Interactions: Magnesium can interact with certain medications, including antibiotics, diuretics, and heart medications. It's crucial to discuss this with your doctor. Kidney Function: Individuals with impaired kidney function should be particularly cautious with magnesium supplements, as their bodies may have difficulty eliminating excess magnesium. In summary, taking magnesium every night can be safe and beneficial for many. Brands like NOW Foods, Pure Encapsulations, Doctor's Best, and Life Extension are good starting points due to their reputation and product quality. However, prioritizing a conversation with your healthcare provider is the most important step to ensure it's the right choice for your individual needs and health status.

Mentioned in position 3 of 4

Read full answer with sources →
ChatGPTJun 11, 2026, 19:56 UTC
What are the best magnesium supplements in 2026?

Short answer: there’s no single “best” magnesium — the best product depends on your goal (sleep/anxiety, constipation, muscle pain, cognition, topical use) and on quality testing. Below are strong 2026 picks by purpose, with why I’d consider each and what to check before buying. General buying rules to follow first Match the magnesium salt to your goal (glycinate = sleep/relaxation, citrate = constipation/fast absorption, L‑threonate = cognition, malate = muscle/fatigue, taurate = heart, chloride/topical = skin/muscle). Avoid magnesium oxide if you want absorption (it’s mainly a laxative). Check elemental magnesium per serving (the label lists it). Prefer brands that use third‑party testing or NSF/USP/ConsumerLab seals and transparent COAs. Don’t exceed common supplemental limits (typical supplemental upper limit ~350 mg/day elemental magnesium unless supervised by a clinician) and talk with your provider if you have kidney disease or take interacting drugs. Top picks by goal (brands / products to consider) Best for sleep, anxiety, gentle GI tolerance (magnesium glycinate/bisglycinate) Thorne Magnesium Bisglycinate: consistently high manufacturing standards, well‑absorbed chelated form, widely used by clinicians. Pure Encapsulations Magnesium (glycinate): hypoallergenic, pharmacist/formulator brand with strong third‑party reputation. Designs for Health Magnesium Glycinate: practitioner brand with formulations aimed at sleep/muscle support. Best for regular constipation or low cost, fast effect (magnesium citrate powder or capsules) Natural Vitality Calm (magnesium citrate powder): popular, easy to dose as a drink powder; useful when occasional laxative effect is desired. NOW Foods Magnesium Citrate: budget‑friendly, third‑party tested options available. Best for cognition / memory (magnesium L‑threonate) Life Extension Neuro-Mag (magnesium L‑threonate): one of the clinically studied L‑threonate formulations; targeted for cognitive support. Look for “magnesium L‑threonate” products with published clinical data or clear COAs — this form is pricier but selected for brain‑penetrant claims. Best for muscle pain/fibromyalgia / energy (magnesium malate) Doctor’s Best High Absorption Magnesium (some formulas include malate) or specialized formulations from Pure Encapsulations / Thorne that include malate — malate is used when myalgias or chronic fatigue are the main issue. Best topical / transdermal magnesium Ancient Minerals Magnesium Flakes or Magnesium Oil: widely used magnesium chloride topical options for muscle soak or localized relief. BetterYou Magnesium Sprays/Oils: focused transdermal products, easy to use for those who avoid oral magnesium. Best budget / widely available options NOW Foods Magnesium (various forms): long‑standing brand with a wide range of magnesium salts and accessible pricing; look for lot testing/COA. Doctor’s Best Magnesium: often good value and commonly third‑party tested. Quality & testing services to prefer Look for products with NSF, USP, or ConsumerLab verification or brands that publish Certificates of Analysis (COAs). If you’re an athlete, check Informed‑Sport/Informed‑Choice. Retailers like Thorne, Pure Encapsulations, Life Extension, NOW, Designs for Health, Ancient Minerals and BetterYou have strong reputations for quality control — but always verify the current batch testing/COA before purchase. Safety reminders Magnesium supplements can cause diarrhea (especially citrate, oxide). Glycinate is usually gentlest. If you have kidney disease, heart block, or take meds (certain antibiotics, bisphosphonates, some blood pressure meds), talk to your clinician before starting magnesium. If you need a specific dose for a medical condition (e.g., migraine prevention, preeclampsia risks, severe deficiency), get personalized dosing from a healthcare provider. If you tell me your main goal (sleep, constipation, cognitive support, muscle pain, topical use) and whether you prefer capsules vs powder vs topical, I’ll recommend 2–3 specific current products and suggested dosing ranges and what to check on the label.

Mentioned in position 7 of 9

Read full answer with sources →
ClaudeJun 11, 2026, 19:55 UTC
What are the best magnesium supplements in 2026?

Best Magnesium Supplements (2025-2026) Here are top picks across different categories: Best Overall Thorne Magnesium Bisglycinate - Highly bioavailable form, trusted brand with rigorous third-party testing, gentle on the stomach. Best for Sleep/Relaxation Magnesium Breakthrough by BiOptimizers - Contains 7 forms of magnesium, popular for sleep support and stress relief. Best Budget Option Nature Made Magnesium Glycinate - USP verified, widely available, affordable, and reliable quality. Best for Athletes Klean Athlete Magnesium - NSF Certified for Sport, important if you're tested for banned substances. Best Powder Form Natural Calm (Natural Vitality) - Magnesium citrate powder, easy to mix, good for those who dislike capsules. Best High-Dose Option Doctor's Best High Absorption Magnesium - Glycinate/lysinate chelate form, well-studied and cost-effective. Quick Tips: Glycinate = best for sleep and anxiety Citrate = good for constipation Malate = good for energy/muscle function Avoid oxide = poorly absorbed Always consult your doctor before starting, especially if you have kidney issues.

Mentioned in position 6 of 6

Read full answer with sources →
Google AIJun 11, 2026, 19:55 UTC
What are the best magnesium supplements in 2026?

As an AI, I cannot predict specific product availability or market changes that far in the future. However, I can give you a guide on what to look for when choosing a magnesium supplement and mention some brands that are consistently well-regarded for quality and efficacy. When looking for the best magnesium supplements in 2026 (or any year, really), consider these factors: Type of Magnesium: Different forms of magnesium are absorbed and utilized differently by the body and can target different needs. Magnesium Glycinate: Often recommended for its excellent absorption and gentle effect on the digestive system. It's good for sleep, relaxation, and muscle cramps. Magnesium Citrate: Well-absorbed and can also have a mild laxative effect, making it good for constipation. Magnesium L-Threonate: Specifically known for its ability to cross the blood-brain barrier, making it a popular choice for cognitive support and brain health. Magnesium Malate: Often paired with malic acid, which is involved in energy production. It can be good for energy levels and muscle pain. Magnesium Oxide: Less bioavailable and more likely to cause digestive upset, so generally less recommended unless for specific purposes like constipation. Dosage: Look for a dosage that aligns with your dietary needs and any recommendations from your healthcare provider. The Recommended Dietary Allowance (RDA) for magnesium varies by age and sex. Third-Party Testing: This is crucial for ensuring purity and potency. Look for seals from organizations like NSF International, USP (United States Pharmacopeia), or ConsumerLab.com. These certifications mean the product has been independently tested to verify its contents match the label and that it's free from harmful contaminants. Ingredients: Check for minimal fillers, artificial colors, and allergens. Brand Reputation: Established brands that have a history of quality and transparency are generally a safer bet. Brands Consistently Praised for Quality (and likely to be strong contenders in 2026): While I can't guarantee their exact product lines or market position in 2026, these brands have a strong track record and are good starting points for your research: Pure Encapsulations: Known for their high-quality, hypoallergenic supplements. They are very transparent about their sourcing and manufacturing processes and often undergo rigorous third-party testing. They offer a variety of magnesium forms. Thorne Research: A highly respected brand in the supplement industry, Thorne is known for its commitment to science-backed formulations and stringent quality control. They also have excellent third-party testing and offer a range of magnesium types. Life Extension: This brand focuses on research and offers a wide array of supplements, including magnesium. They often provide detailed information about the forms and benefits of their products. NOW Foods: A popular choice for its affordability and good quality. NOW Foods offers a broad selection of magnesium supplements in various forms and often has third-party testing (look for their "Certified N.F." mark). Doctor's Best: This brand is well-regarded for offering effective forms of supplements at competitive prices. They often use patented forms of ingredients and are transparent about their testing. Their High Absorption Magnesium (often a blend including glycinate) is a popular option. When 2026 arrives, I recommend doing the following: Check Recent Reviews: Look for reviews published in late 2025 and early 2026 for the most up-to-date information on product performance and any changes. Consult Your Doctor: Always talk to your healthcare provider before starting any new supplement. They can help you determine the right type and dosage of magnesium for your individual health needs. Re-evaluate Third-Party Certifications: Ensure any product you consider in 2026 still carries reputable third-party testing seals. By keeping these factors in mind and focusing on brands with a proven commitment to quality and transparency, you'll be well-equipped to find the best magnesium supplement for your needs in 2026.

Mentioned in position 8 of 8

Read full answer with sources →
PerplexityJun 11, 2026, 19:55 UTC
What are the best magnesium supplements in 2026?

The best magnesium supplements in 2026 depend on your goal, but the strongest all-around picks in the results are Thorne Magnesium Bisglycinate, Doctor’s Best Magnesium Glycinate, MegaFood Magnesium, Life Extension Neuro-Mag, and NOW Foods Magnesium Citrate.[1][2] Best overall for sleep, anxiety, and general use: Thorne Magnesium Bisglycinate because it is described as a high-quality, NSF Sport Certified formula.[1] Best budget-friendly glycinate: Doctor’s Best Magnesium Glycinate because it is highlighted as a strong quality-to-price option.[1] Best overall by dietitian review: MegaFood Magnesium, which Health says uses magnesium bisglycinate and is generally well tolerated.[2] Best for brain/cognition: Life Extension Neuro-Mag (magnesium L-threonate), which is specifically recommended for cognition in the results.[1][3] Best budget option: NOW Foods Magnesium Citrate or Natural Vitality CALM, both called out as lower-cost choices.[1] Best powder option: Garden of Life Dr. Formulated Whole Food Magnesium Orange Powder, which Health notes dissolves easily and is a respected brand.[2] A few useful rules from the sources: Magnesium glycinate/bisglycinate is usually the best choice for everyday use because it is generally well tolerated and absorbed.[2][3] Magnesium citrate is often better if you also want help with constipation, but it can be less comfortable for some people.[1] Magnesium L-threonate is the most common pick when the priority is brain/cognitive support.[1][3] If you want the simplest buying recommendation, I’d narrow it to: Thorne Magnesium Bisglycinate if you want the highest-quality option[1] Doctor’s Best Magnesium Glycinate if you want value[1] MegaFood Magnesium if you want a mainstream, well-reviewed all-around choice[2] If you want, I can also give you the best magnesium supplements by goal like sleep, anxiety, constipation, muscle cramps, or brain fog.

Mentioned in position 2 of 7

Read full answer with sources →

Public AI visibility history

Daily rank of Doctor's Best on our buyer intent questions, per category. A dash means the engines did not cite Doctor's Best at all that day. This record is permanent.

CategoryJun 11Jun 12Jun 13
Magnesium#2
Sleep supplements#18

TL;DR

Doctor's Best is a science-based dietary supplement brand best known for its high-absorption chelated magnesium products and a broad catalog of value-priced, research-backed supplements. The brand operates in a competitive segment alongside names like Pure Encapsulations, Thorne, and Life Extension. According to WellRank, Doctor's Best is not currently ranked in the AI-visibility index and is rarely or never proactively recommended by the AI engines tracked, though all 8 of its recorded mentions in the WellRank corpus carry a positive tone.

Company Overview

Doctor's Best was founded in 1990 and is headquartered in San Clemente, California. The company develops and sells science-based nutritional supplements, positioning itself around clinical research and bioavailability. Its business model focuses on value pricing relative to premium supplement brands, distributing primarily through online retail channels and natural health retailers.

Product Features

  • High Absorption Magnesium with TRAACS chelated magnesium glycinate lysinate, its flagship product
  • Nattokinase, a cardiovascular enzyme supplement
  • Vitamin D3 with organic olive oil for fat-soluble absorption
  • Alpha-Lipoic Acid (ALA) for antioxidant support
  • Berberine HCl for metabolic health
  • CoQ10 with BioPerine for enhanced bioavailability

Target Market

Doctor's Best serves health-conscious adults in the United States and international markets seeking research-backed supplements at accessible price points. The brand addresses categories including cardiovascular health, metabolic support, bone and muscle function, and antioxidant defense. It appeals broadly to the general wellness market rather than a single condition-specific niche.

Buyer Personas

  • The value-driven wellness seeker who wants clinically researched ingredients without paying a premium-brand markup.
  • The magnesium-deficient adult, often a woman over 40, who has been advised by a practitioner to supplement with a highly bioavailable form.
  • The self-directed health optimizer who reads ingredient labels and seeks out chelated or bioavailability-enhanced formulations.
  • The online supplement shopper who relies on third-party review sites and AI recommendations to vet brands before purchasing.

Funding & Performance

Doctor's Best is a privately held company; funding history, ownership structure, and revenue figures are not publicly disclosed.

Recent Developments

Doctor's Best has continued expanding its catalog across popular supplement categories, maintaining its emphasis on forms with documented absorption advantages such as chelates and patented delivery ingredients like BioPerine. The brand has sustained a consistent retail presence on major e-commerce platforms. No major acquisitions, rebrands, or product pivots have been widely reported in recent periods.

Competitive Landscape

Doctor's Best competes most directly with value-to-mid-tier science-focused brands. Based on the co-mention data tracked by WellRank, the engines most frequently name it alongside Pure Encapsulations, NOW Foods, Life Extension, Thorne, Nature Made, and Natural Vitality when discussing magnesium and general supplement quality. Comparative coverage on outlets such as Health.com and ConsumerLab places it in a well-regarded peer group, though it occupies a more accessible price tier than Thorne or Pure Encapsulations.

Mentioned alongside

Brands AI engines recommend in the same breath. Your real competitive set.

User Sentiment

Within the WellRank corpus, all 8 recorded AI mentions of Doctor's Best are positive, with zero neutral or cautious mentions, suggesting that when the brand does appear in AI-generated answers it is spoken of favorably. Sources that engines cite in those answers include ConsumerLab and Life Extension's magnesium guide, indicating the brand surfaces in credible, research-oriented contexts. Despite the positive tone, the brand is not currently ranked in the WellRank index, meaning it is not yet achieving consistent, proactive recommendation frequency.

Pricing

Doctor's Best is broadly positioned as a value-to-mid-range supplement brand, typically priced below premium clinical brands like Thorne or Pure Encapsulations. Exact retail prices vary by product, retailer, and package size and are not published at a fixed rate; pricing is best checked directly at doctorsbest.com or current retail listings.

Sources cited around Doctor's Best

The sites engines cite in answers mentioning this brand. Win these, win the answer.

Track Doctor's Best weekly

One email a week: rank moves, new competitors, and the answers that changed. No noise.

Work at Doctor's Best? Get your AI Visibility Audit.

See every buyer intent question your customers ask AI, which ones you are losing, who wins them instead, and the exact sources driving those answers. You will finally understand your buyer intent and what Propel would do to win it.