Grade: C

MEDIUM RISK

Custom Probiotics

Item: Custom Probiotics
Rating: 50
Author: SupplementChecker

Custom Probiotics has a SupplementChecker.co trust score of 50/100, which is a Grade C and indicates MEDIUM risk. Custom Probiotics does not appear to have any third-party testing certifications. This, combined with a lack of published lab results and ingredient sourcing information, impacts the overall assessment of whether Custom Probiotics is a good brand.

Custom Probiotics Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 0

Custom Probiotics has a trust score of 50/100 (Fair). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and no adverse event reports.

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Red Flags

⚠No third-party testing certifications found
⚠No GMP certification visible

Verified Strengths

✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

No certifications on record. This brand has not demonstrated GMP compliance or third-party testing verification.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Clean record — no FDA warnings, recalls, or significant adverse events.

Is Custom Probiotics Third-Party Tested?

No — Custom Probiotics is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No GMP certification was found on record either. We recommend looking for brands with verified third-party testing for the highest confidence in product quality. See our guide to third-party tested supplements.

Is Custom Probiotics a Good Brand?

Custom Probiotics scores 50/100 (C) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. Custom Probiotics has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About Custom Probiotics

Custom Probiotics is an independent supplement brand operating in the US. The founding date is unknown. They are known for offering specialized probiotic formulations.

Product Specialization

Custom Probiotics specializes in specialty probiotics. Their product line focuses on targeted probiotic solutions.

Testing & Certifications Explained

Custom Probiotics does not appear to have any third-party testing certifications. This means that independent organizations are not verifying the quality, purity, or potency of their products. Consumers should be aware that the absence of these certifications makes it more difficult to assess whether Custom Probiotics is safe and whether the product contains what is claimed on the label.

How Custom Probiotics Compares

Compared to competitors like Klaire Labs (trust score 75/100) and Thorne Research (trust score 82/100), Custom Probiotics lags in trust and transparency. Both Klaire Labs and Thorne Research have more visible third-party testing and certifications. Another competitor, NOW Foods (trust score 68/100), also demonstrates more transparency than Custom Probiotics.

Buying Guidance

Given the Custom Probiotics trust score and lack of third-party testing, consumers should exercise caution. Purchase directly from the manufacturer or authorized retailers to minimize the risk of counterfeit products. Check Custom Probiotics reviews from multiple sources before buying.

Frequently Asked Questions

Has Custom Probiotics had any recalls?

No — as of 2026, Custom Probiotics has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Custom Probiotics received a trust score of 50/100 from SupplementChecker.

Are Custom Probiotics supplements third-party tested?

No — Custom Probiotics supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No independent testing or GMP certification was found on record.

Is Custom Probiotics safe?

Custom Probiotics received a trust score of 50/100 (grade: C, risk level: MEDIUM). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Is Custom Probiotics a good brand?

Custom Probiotics scores 50/100 (grade: C) — this is below average. We recommend looking for brands with third-party certifications like NSF or USP. They do not currently hold third-party testing certifications like NSF, USP, or Informed Sport. No FDA warnings or recalls found.

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How We Calculated This Score

Every brand starts with a baseline score of 70/100.

Points added for: Third-party certifications (NSF +15, USP +15, Informed Sport +10), publishing lab results (+10), clean regulatory record (+10), 10+ years in business (+10), organic certification (+5).

Points deducted for: FDA warning letters (-25), product recalls (-20), high adverse events (-15), no third-party testing (-15), proprietary blends (-10), no GMP (-10).

Score is capped at 0-100. Grade and risk level are derived from the final score.

All data sourced from FDA.gov, Health Canada (LNHPD / recalls-rappels), NSF.org, USP.org, and publicly available brand information. Last updated: 4/9/2026.

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