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Doctor's Best: prices and comparison of its 8 products

The short answer. This site compares 8 Doctor's Best products across 4 categories, sold at Amazon. The highest scoring is Doctor's Best Vitamina C con Q-C | 1000mg - 120 cápsulas, with 50 out of 100 at €33.95 from Amazon. In glucosamine and chondroitin, the cheapest per capsule is Doctor's Best, Glucosamina-Condroitina MSM, con OptiMSM, 360 Cápsulas, Probado en Laboratorio, Sin Soja, Sin Gluten, No GMO, at €0.259/capsule. In l-carnitine, the cheapest per capsule is Doctor's Best L-Carnitina Fumarato con Biosint Carnitinas | 855mg - 60 cápsulas vegetales, at €0.549/capsule. In citrulline, the cheapest per kg is Doctor's Best, L-Citrulline (L-Citrulina), 200g Polvo Vegano, Aminoácido, Probado en Laboratorio, Sin Gluten, Sin Soja, Vegetariano, at €237.10/kg. Prices collected on October 15, 2026.

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Some store links are affiliate links: if you buy through them, this site may earn a commission at no extra cost to you. It changes nothing in the ranking: the score is computed beforehand and without reading those links, and products with no affiliate programme appear exactly the same. How it is calculated.

Doctor's Best glucosamine and chondroitin

5 products, from cheapest per capsule to dearest

Doctor's Best glucosamine and chondroitin by price per capsule
ProductPackPrice€/capsuleLevelScoreStore
Doctor's Best, Glucosamina-Condroitina MSM, con OptiMSM, 360 Cápsulas, Probado en Laboratorio, Sin Soja, Sin Gluten, No GMO360 capsules€93.10€0.259/capsule146Amazon
Doctor's Best, Glucosamina-Condroitina MSM, con OptiMSM, 240 Cápsulas, Probado en Laboratorio, Sin Soja, Sin Gluten, No GMO240 capsules€64.03€0.267/capsule145Amazon
Glucosamina, Condroitina y MSM con OptiMSM - 240 cápsulas240 capsules€69.99€0.292/capsule145Amazon
Glucosamina Condroitina Msm Con Optimsm, 120 Cápsulas120 capsules€39.99€0.333/capsule144Amazon
Doctor's Best, Glucosamina, Condroitina, MSM y Ácido Hialurónico, 150 Cápsulas, Probado en Laboratorio, Sin Gluten, Sin Soja150 capsules€60.21€0.401/capsule143Amazon

Compare with 101 glucosamine products from every brand →

Doctor's Best l-carnitine

1 product, from cheapest per capsule to dearest

Doctor's Best l-carnitine by price per capsule
ProductPackPrice€/capsuleLevelScoreStore
L-Carnitina Fumarato con Biosint Carnitinas | 855mg - 60 cápsulas vegetales60 capsules€32.95€0.549/capsule129Amazon

Compare with 93 carnitine products from every brand →

Doctor's Best citrulline

1 product, from cheapest per kg to dearest

Doctor's Best citrulline by price per kg
ProductPackPrice€/kgLevelScoreStore
Doctor's Best, L-Citrulline (L-Citrulina), 200g Polvo Vegano, Aminoácido, Probado en Laboratorio, Sin Gluten, Sin Soja, Vegetariano200 g€47.42€237.10/kg146Amazon

Compare with 42 citrulline products from every brand →

Doctor's Best vitamin c

1 product, from cheapest per capsule to dearest

Doctor's Best vitamin c by price per capsule
ProductPackPrice€/capsuleLevelScoreStore
Vitamina C con Q-C | 1000mg - 120 cápsulas120 capsules€33.95€0.283/capsule150Amazon

Compare with 127 vitamin C products from every brand →

Questions about Doctor's Best

Answered with the data on this page

Which is the cheapest Doctor's Best product?
In glucosamine and chondroitin, Doctor's Best, Glucosamina-Condroitina MSM, con OptiMSM, 360 Cápsulas, Probado en Laboratorio, Sin Soja, Sin Gluten, No GMO from Amazon: €93.10 for a 360 capsules pack, or €0.259/capsule. In l-carnitine, Doctor's Best L-Carnitina Fumarato con Biosint Carnitinas | 855mg - 60 cápsulas vegetales from Amazon: €32.95 for a 60 capsules pack, or €0.549/capsule. In citrulline, Doctor's Best, L-Citrulline (L-Citrulina), 200g Polvo Vegano, Aminoácido, Probado en Laboratorio, Sin Gluten, Sin Soja, Vegetariano from Amazon: €47.42 for a 200 g pack, or €237.10/kg. The comparison is by price per unit of sale, not per pack: a big tub can cost more and still work out cheaper.
What do we make of Doctor's Best?
There are no paid reviews and no stars: every product carries a score out of 100, 35 % price against the cheapest in its category and the rest verifiable quality, category requirements and store ratings. The best from Doctor's Best is Doctor's Best Vitamina C con Q-C | 1000mg - 120 cápsulas with 50 points, and each product page explains its score line by line.
Where to buy Doctor's Best cheapest?
Among the stores compared here, only Amazon sells Doctor's Best.

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