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Castor Oil 1 mg/mL Liquid, 118 mL — NDC 55910-0979-26 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

Castor Oil 1 mg/mL Liquid, 118 mL — NDC 55910-979-26 (Billing 55910-0979-26)

by Old East Main Co. · 118 mL in 1 BOTTLE, PLASTIC

This is a package of 118 mL of Castor Oil 1 mg/mL Liquid from Old East Main Co., marketed since Oct 2017 and currently FDA-listed.

NDC 55910-0979-26
🏷️ FDA NDC (as labeled) 55910-979-26 billing pads the product segment with a zero
This package
Contains118 mL Pack sizes2 compare ↓
Product page 55910-0979-16 Also comes in: 59 ml 55910-979-16
OTC On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 8, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

NDC database record

One package, one record: these facts belong to NDC 55910-979-26 alone.

Record
FDA NDC Directory package listing · Human OTC drug
Code segments
55910 labeler · 979 product · 26 package
Package marketed since
Oct 23, 2017
Sample package
No — commercial package
Listing certified through
Dec 31, 2027
Barcode (UPC-A, from the NDC)
3 5591097926 8
FDA record last changed
Jul 24, 2026

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 55910-979-26
Product NDC 55910-979
11-digit billing NDC 55910097926
UNII D5340Y2I9G
Application # M007
SPL Set ID a1ca668a-3bf9-46a9-8a4f-5cb61547bb81
DEA schedule Non-controlled
Marketing category OTC MONOGRAPH DRUG
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2017-10-23
Route ORAL
Dosage form LIQUID
Substance CASTOR OIL
Why two NDCs? The FDA registers this code as 55910-979-26 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 55910-0979-26. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

Clinical

📗 Our plain-language guide HelloPharmacist
  • Most people can expect a bowel movement within 6 to 12 hours of taking a dose. So if you take it in the morning, you'll likely see results before the end of the day. Because it wor...
  • How quickly will castor oil work for constipation?
  • The labels for most oral castor oil products recommend taking it on an empty stomach for best results. If the taste is a problem — and it can be — try mixing it with juice. That's...
  • Should I take it with food or on an empty stomach?
📖 Read our full Castor Oil guide →
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer mLPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly No Part D plan price is available for this NDC in our data.
ℹ️
No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.
Try another pack size: 59 ml
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
55910-0979-26 You're viewing this 118 mL in 1 BOTTLE, PLASTIC 2017-10-23 — Active
55910-0979-16 55910-979-16 Main listing 59 mL in 1 BOTTLE, PLASTIC 2017-10-23 — Discontinued by firm

You're viewing the largest of 2 pack sizes for this product.

Pack size FAQ

What quantity is in this package?
This package contains 118 mL — 118 ml in 1 bottle, plastic.
How does this package differ from NDC 55910-0979-16?
Both are Castor Oil 1 mg/mL Liquid — the drug itself is identical. This page's package is the 118 mL one, while NDC 55910-0979-16 is the 59 ml package.
What NDC number is used to bill for this package of Castor Oil 1 mg/mL Liquid?
Use the 11-digit billing form listed in the identifiers section of this page. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
GNP Castor Oil 1 mg/mL 24385-0515-30 Amerisource 177 ml $0.020 — Availability likely —
Castor Oil 1 mg/mL 70677-1317-01 STRATEGIC 177 ml $0.020 — Availability likely —
Foster and Thrive Castor Oil 1 mg/mL 70677-1085-01 Strategic 177 ml $0.020 — Availability likely —
Quality Choice Castor Oil 1 mg/mL 63868-0322-06 Chain 177 ml $0.021 — FDA listed —
Rite Aid Castor Oil 1 mg/mL 11822-0645-01 Rite 177 ml — — FDA listed —
Premiere Value Castor Oil 1 mg/mL 68016-0515-96 Chain 177 ml — — FDA listed —
Harris Teeter Castor Oil 1 mg/mL 69256-0515-96 Harris 177 ml — — FDA listed —
Freskaro Castor Oil 1 mg/mL 82645-0515-96 Pharma 177 ml — — FDA listed —
Humco Castor Oil 1 mg/mL 82645-0919-16 Pharma 473 ml — — FDA listed —
Humco Castor Oil (Regular) 1 mg/mL 00395-0513-94 Humco 118 ml — — FDA listed —
Castor Oil 1 mg/mL 69842-0978-26 CVS 118 ml — — FDA listed —
Castor Oil 1 mg/mLthis 55910-0979-26 Old 118 ml — — FDA listed —
DDM Castor Oil 1 mg/mL 53943-0515-96 Discount 178 ml — — FDA listed —
Castor Oil 1 mg/mL 11344-0870-26 Nice-Pak 118 ml — — FDA listed —
Humco Castor Oil 1 mg/mL 00395-0515-16 Humco 473 ml — — FDA listed —
Castor Oil 1 mg/mL 69452-0487-97 BIONPHARMA 177 ml — — FDA listed —
Castor Oil 1 mg/mL 41163-0078-26 United 118 ml — — FDA listed —
About this product: other versions of the same ingredient, strength and form are listed above, least expensive first, with FDA equivalence ratings where available.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2017
On the market since
Oct 2017
📍
2026
Currently FDA-listed
9 years listed
🔒
·
No generic listed yet
brand only
ℹ️No FDA-approved generic found

We did not find an FDA-approved generic match for this exact strength, form and route.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

🧪 Avoiding an ingredient? See Castor Oil inactive ingredients by manufacturer: every current product's list side by side, so you can ask your pharmacy for the version that does not list it.

From the label’s inactive-ingredient sectionnone

This is label-wide narrative text, not a normalized exact-product ingredient list. A label can cover multiple strengths or packages.

Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerOld East Main Co.
FDA applicationM007 (OTC MONOGRAPH DRUG)
Labeler code55910
First marketedOct 2017
Product typeHuman Otc Drug
Portfolio77 products on file

More NDCs from Old East Main Co. labeler code 55910

The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

FDA label — Drug Facts FDA SPL

The complete FDA label for this product — the official Drug Facts labeling, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⚠️ Warnings 🤒 Adverse Reactions 📦 Storage and Handling 🧪 Active Ingredient 🧪 Inactive Ingredients 🎯 Purpose 📄 Do Not Use 📄 Ask a Doctor Before Use If 📄 Ask a Doctor or Pharmacist Before Use If 📄 Stop Use and Ask a Doctor If 🤰 If Pregnant or Breast-Feeding 📄 Keep Out of Reach of Children 📄 Package Label / Principal Display Panel
🎯 Indications and Usage 16 words ▾

Use For relief of occasional constipation (irregularity). Generally produces bowel movement in 6 to 12 hours.

⏱️ Dosage and Administration 61 words ▾

Directions Adults and children over 12 years of age: 1 to a maximum of 4 Tablespoons (15 to 60 mL) in a single daily dose children 2 to under 12 years of age: 1 to a maximum of 3 teaspoons (5 to 15 mL) in a single daily dose children under 2 years of age: do not use, consult a doctor

⚠️ Warnings 4 words ▾

Warnings for this product

🤒 Adverse Reactions 14 words ▾

ADVERSE REACTION Distributed By Old East Main Co. 100 Mission Ridge, Goodlettsville, TN 37072

📦 Storage and Handling 9 words ▾

Other Information keep tightly closed, away from excessive heat.

🧪 Active Ingredient 6 words ▾

Active ingredient Castor oil USP 100%

🧪 Inactive Ingredients 3 words ▾

Inactive Ingredients none

🎯 Purpose 3 words ▾

Purpose Stimulant laxative

📄 Do Not Use 10 words ▾

Do not use for a period longer than 1 week

📄 Ask a Doctor Before Use If 28 words ▾

Ask a doctor before use if you have abdominal pain, nausea, or vomiting noticed a sudden change in bowel habits that persists over a period of 2 weeks

📄 Ask a Doctor or Pharmacist Before Use If 33 words ▾

Ask a doctor or pharmacist before use if you are taking any other drug. Take this product 2 or more hours before or after other drugs. Laxatives may affect how other drugs work.

📄 Stop Use and Ask a Doctor If 28 words ▾

Stop use and ask a doctor If you have rectal bleeding or failure to have a bowel movement after use. These could be signs of a serious condition.

🤰 If Pregnant or Breast-Feeding 10 words ▾

If pregnant or breast-feeding, ask a health professional before use.

📄 Keep Out of Reach of Children 21 words ▾

Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.

📄 Package Label / Principal Display Panel 32 words ▾

Princiapl panel display Since 1903 Rexall™ Castor Oil U.S.P. Stimulant laxative For relief of occasional constipation SEALED WITH PRINTED NECKBAND FOR YOUR PROTECTION 4 FL OZ (118 mL) image description image description

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

About this NDC listing & data coverage

Over-the-counter (OTC) product
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos ✓ Available
Inactive ingredients (structured) ✓ Available
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope.
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Is this NDC FDA-approved?
An NDC listing does not by itself establish FDA approval — the NDC Directory records that a product is listed with FDA, not that it was reviewed and approved. This listing's marketing category is "Otc Monograph Drug". Products approved under an application carry an NDA, ANDA, or BLA number.
Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Old East Main Co.. Listing status can change — the directory data on this page refreshes weekly.
Does this product come in other package sizes?
Yes — the FDA directory lists 1 other package presentation of this same product, including 59 ml (55910-0979-16). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Old East Main Co. is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as an over-the-counter product, so it does not require a prescription. Follow the package directions, and ask your pharmacist if you are unsure whether it is right for you.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
← 55910-0978-10 · Dolgencorp, 55910-0981-02 · Dolgencorp, →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.