Does Metamucil (psyllium) contain red 40 or yellow 6?

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Last updated: June 14, 2025 • View editorial policy

From the Research

Metamucil products may contain artificial colors including Red 40 and Yellow 6, but this varies by product formulation, and it is recommended to choose the Metamucil Free & Clear version for those concerned about artificial food dyes. The original Metamucil powder contains artificial colors including Yellow 6, while some flavored versions may contain Red 40. However, Metamucil does offer dye-free options that contain no artificial colors, specifically their "Free & Clear" formulation. If you have concerns about artificial food dyes due to sensitivities or personal preference, you should choose the Metamucil Free & Clear version, which provides the same psyllium fiber benefits without any artificial colors. The active ingredient in all Metamucil products is psyllium husk, which works as a bulk-forming fiber supplement regardless of the presence of dyes. Always check the ingredient list on the specific Metamucil product you're considering, as formulations can change over time 1, 2, 3, 4, 5.

Some key points to consider:

  • Metamucil is a fiber supplementation formed by 100% natural psyllium 3
  • Psyllium is used as a dietary supplement and is supplied in the form of husk, granules, capsules, or powder 5
  • The quality of pharmacist's counseling is associated with consumers' adherence and satisfaction to Metamucil 3
  • Nonfermented gel-forming psyllium was 3.4 times more effective than insoluble wheat bran for increasing stool output in patients with chronic idiopathic constipation 4
  • It is essential to consider new or recently introduced materials as possible allergens if it is suspected that a baker has work-related respiratory or allergic symptoms 5

In terms of morbidity, mortality, and quality of life, it is crucial to prioritize the selection of a Metamucil product that meets individual needs and preferences, particularly for those with sensitivities or allergies to artificial food dyes. Choosing the Metamucil Free & Clear version can help minimize potential adverse effects and ensure optimal benefits from the psyllium fiber supplement.

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.