Complete Afterbiotics offers multi-strain probiotics for gut health, by combining six strains to support the intestinal barrier and balance. Key ingredients include Lactobacillus rhamnosus GG and Saccharomyces boulardii, two well-studied strains that boost resilience against gut disturbances, support immune function, and help keep digestion calm and comfy. Dr Mercola's focus on quality, safety testing, and clean sourcing supports every capsule.

Available Sizes & Variants:

30 capsules - One month supply.

Benefits & Features:

• Gently supports everyday digestion.
• Multi-strain synergy helps maintain gut balance and supports the intestinal barrier, a practical win for gut health.
• The blend includes Lactobacillus rhamnosus GG and Saccharomyces boulardii, two well-studied strains that bolster resilience against gut disturbances, support immune function, and help keep digestion calm and comfortable.
• Prebiotic citrus bioflavonoid complex supports antioxidant activity in the colon.
• Supports antibiotic use by providing a probiotic yeast that resists antibiotics and helps maintain gut function throughout treatment.

Dr Szajewska of University of Warsaw notes that Lactobacillus rhamnosus GG, one of the star strains in Complete Afterbiotics, has been linked to shorter antibiotic associated diarrhoea. The formula also brings a citrus bioflavonoid prebiotic from sweet orange and grapefruit, aligning with Dr Mercola’s long standing commitment to quality and clean sourcing.

Afterbiotics Probiotic and SBO Blend;
Saccharomyces boulardii, Pediococcus acidilactici, Lactobacillus rhamnosus GG, Bacillus subtilis HU58, Bacillus coagulans SC208, Clostridium butyricum.
Prebiotic Citrus Bioflavonoid Complex;
[from Sweet Orange (Citrus sinensis) Whole Fruit Extract and Grapefruit (Citrus paradisi) Whole Fruit Extract]
Other: Organic brown rice syrup, capsule (hydroxypropyl methylcellulose).

• GTIN: 810487033596
• Manufacturer: Dr Mercola
• Categories: Dr MercolaNew ArrivalsProbiotic Tablets, Capsules & Liquids
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Adults should take one capsule daily as a dietary supplement on an empty stomach, ideally 30 minutes before a meal. CATS & DOGS: Add 1 capsule to your pet’s food once daily\, regardless of weight. Capsule can be opened and sprinkled onto food or consumed whole.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Lactobacillus rhamnosus GG

Lactobacillus rhamnosus GG is a probiotic microbe that helps balance the gut microbiota. This well researched strain is commonly used to support intestinal balance in formulated products. This formula also includes additional probiotic strains to enhance the overall probiotic effect.

This form is provided as a probiotic culture intended for gut health support and is paired with other probiotic ingredients in this product to support a broad spectrum of intestinal function.

What Does Lactobacillus rhamnosus GG Do?

Lactobacillus rhamnosus GG participates in supporting immune function and helps maintain normal gut microbial balance, in keeping with EFSA guidance. Studies show this strain can promote secretory IgA production, contributing to mucosal immune defence.

Dr. Szajewska from Warsaw University found evidence on LGG and immune outcomes in clinical research, supporting its role in probiotic formulations for gut health enhancement.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Dr Mercola is Welzo Selected for this probiotic partner because the brand demonstrates a clear commitment to manufacturing standards and a structured approach to probiotic science. This is evidenced by the brand’s focus on a multi-strain formulation that combines soil-based organisms, traditional probiotics, and probiotic yeast in a single blend, designed to support gut balance and barrier integrity as outlined in the product formulation.

Our vetting criteria centre on brand credibility, product integrity, and manufacturing rigour. The team at Welzo reviews brands for consistent quality practices and formulation transparency, and we emphasise a rigorous review of testing and certifications as part of the standards we enforce. In evaluating Dr Mercola, the emphasis on a well‑characterised, six‑strain probiotic profile aligns with our commitment to evidence‑driven selection, as discussed with our expert team of doctors, nurses, and nutritionists.

Choosing Dr Mercola for Complete Afterbiotics reflects our partnership rationale: their focus on diverse, synergistic probiotic elements matches the needs of this supplement, where product specificity and high‑quality formulation are key to trusted consumer support.