Community Standards Reference
A frum reader's guide to the hechsherim you'll see on supplement labels.
Different communities rely on different agencies. The chart below covers the certifications you'll most commonly encounter on longevity supplements, with each agency's own jurisdiction and scope linked to its primary source. For your specific community standard, always ask your rav. This is a reference, not a psak.
Show full hechsher reference table
| Agency / Mark | Region | Scope & Reputation (per the agency's own materials) | Common Use in Supplements |
|---|---|---|---|
| OU Orthodox Union Union of Orthodox Jewish Congregations |
United States (global) | The largest kosher agency in the world; supervises 1.4M+ products in 100+ countries. Widely accepted across Modern Orthodox, Yeshivish, and most Chabad households. oukosher.org | Most common mark on US supplements — Thorne, Pure Encapsulations, Solgar (selected SKUs), Nordic Naturals, Designs for Health. |
| Star-K Star-K Kosher Certification (Baltimore) |
United States (global) | Highly respected; maintains active medication and over-the-counter (OTC) lists. Broadly accepted across Yeshivish, Modern Orthodox, and most Chassidish communities. star-k.org | Frequent on supplement and medication ingredients; their OTC list is widely used as a halachic reference. |
| OK OK Kosher Certification (Brooklyn) |
United States (global) | Chabad-affiliated; certifies 1M+ products. Broadly accepted across Chabad, Yeshivish, and Modern Orthodox. ok.org | Common on raw-material ingredients; appears on Bluebonnet, NOW Foods (selected SKUs). |
| KOF-K KOF-K Kosher Supervision (Teaneck) |
United States (global) | Widely accepted in Modern Orthodox and Yeshivish communities; large industrial ingredient certifier. kof-k.org | Frequent on Solgar, Bluebonnet, Thorne (some SKUs), pharmaceutical raw materials. |
| cRc Chicago Rabbinical Council |
United States (global) | Respected agency; maintains a leading public medication and OTC reference list. Broadly accepted across the Modern Orthodox and Yeshivish world. crcweb.org · OTC list | Reference standard for OTC medication kashrut; their list is one of the most-cited halachic medication references. |
| CRC Chicago vs. cRc Note: same agency — both abbreviations refer to the Chicago Rabbinical Council. |
United States | "cRc" and "CRC Chicago" are interchangeable. The agency uses the lowercase-c "cRc" mark on certified products. | — |
| Badatz Eda Chareidis Badatz Eida HaChareidis (Jerusalem) |
Israel (global reach) | Per Wikipedia: considered the most stringent and prominent hechsher in Israel. Generally preferred by Chassidish, Yeshivish (Israeli-style), and many Sephardic households who follow stricter standards. | Tier preferred for Pesach and for households maintaining the highest standard of mehadrin certification. |
| Badatz Beit Yosef Beit Yosef hechsher (Sephardic standard) |
Israel | Follows the rulings of the Beit Yosef (Rabbi Yosef Karo); widely used by Sephardic households, particularly for chalav Yisrael / glatt standards. | Less common on US-sold supplements; relevant for Israeli imports. |
| Rabbanut Israeli Chief Rabbinate |
Israel | The state kashrut authority of Israel. Considered a baseline standard; many observant Israeli households additionally rely on a Badatz mehadrin certification. gov.il chief rabbinate | Standard on Israeli-manufactured products. |
| KLBD Kosher London Beth Din |
United Kingdom (global) | The largest UK kashrut authority. Accepted across UK Modern Orthodox and most Yeshivish households. kosher.org.uk | Common on UK and European supplement brands. |
| Kedassia Union of Orthodox Hebrew Congregations (London) |
United Kingdom | Stricter UK Chassidish / Charedi standard. Preferred by Stamford Hill and observant Charedi households in the UK. | Relevant for UK-imported supplements; less common in US supply chain. |
| COR Kashruth Council of Canada |
Canada (global) | Largest Canadian kashrut agency; broadly accepted across Modern Orthodox, Yeshivish, and Chabad communities in North America. cor.ca | Common on Canadian-manufactured supplements and pharmaceuticals. |
A note on community acceptance
Every household has the right to follow its own rav, minhag, and posek. The "acceptance" notes in this table describe broadly observed patterns, not universal rulings. A Chassidish reader may decline a hechsher that a Modern Orthodox reader accepts; both are valid. The information here is summarized from each agency's own public materials and is intended as a starting reference — not a substitute for asking your own rav.