Earth Made Nutritions sells USP and EP monograph-compliant N-Acetyl-L-Cysteine powder. We have manufactured raw materials for dietary supplement and pharmaceutical businesses in California since 2018.
Overview of Product:

Acylated L-cysteine, N-Acetyl-L-Cysteine powder, is more stable.
Typical traits:
Stable
For processing and storage, the acetyl group prevents thiol (-SH) oxidation. NAC is stable in pH 2-3 solutions but degrades over pH 7.
Solubility
At 200 mg/mL, water-soluble. Antioxidation needs pH regulation, however the powder dissolves easily in water.
See and smell
Due to the thiol group, it smells sulphurous. Odour intensification may suggest oxidation—contact us.
Visible Light
Rotation identifies the physiologically active L-isomer.
| Parameter | Specification |
|---|---|
| Appearance | White crystalline powder |
| Molecular Weight | 163.2 g/mol |
| Melting Point | 109°C to 111°C |
| Water Solubility | ~200 mg/mL at 20°C |
| Purity | ≥98.5% |
| pH Range | 2.0-2.8 (1% solution) |
| Optical Rotation | +21.0° to +27.0° |
Production Facility
Our 15,000 sq ft California facility operates under NSF GMP certification. We use synthetic production methods with fermentation-derived starting materials.
Quality Testing
Each batch undergoes:
· HPLC purity analysis
· Heavy metals testing (ICP-MS)
· Microbial contamination screening
· Optical rotation verification
· Residual solvent analysis
Every shipment includes a Certificate of Analysis with complete test results.
Certifications:
· NSF GMP Certified
· ISO 9001:2015
· FSSC 22000
· Kosher (OK Kosher)
· Halal (IFANCA)

NAC powder works across multiple dosage forms:
Capsules & Tablets
Standard 40-80 mesh flows through encapsulation equipment. Use magnesium stearate (0.5-1%) as a lubricant for direct compression.
Powdered Blends
Mix with antioxidants (vitamin C, selenium) for synergistic formulations. Common serving sizes range from 200-600mg.
Liquid Formulations
Requires stabilization in aqueous solutions:
· Maintain pH 2.5-3.5 with citric acid
· Add chelating agents (EDTA 0.01-0.05%)
· Consider nitrogen purging to exclude oxygen
· Use within 90 days after preparation
Effervescent Tablets
NAC reacts with carbonates to produce CO₂. Use enteric coating or separate compartments in dual-chamber designs.
Storage of Finished Products
Light-resistant packaging is essential. Blister packs perform better than bulk bottles for moisture-sensitive formulations.

U.S. Warehouse Network
We maintain inventory at four distribution centers:
· West Coast (California)
· Southwest (Texas)
· Midwest (Illinois)
· East Coast (New Jersey)
Order Fulfillment
· Minimum order quantity: 25kg
· Standard lead time: 2 business days for pickup
· Bulk orders (>500kg): Contact for scheduling
· International shipping: Available with extended lead times
Packaging Options
· Standard: 25kg fiber drums with double polyethylene liner
· Custom: Available upon request for large orders
Our NAC powder meets requirements for:
United States
· FDA GRAS status for dietary supplements
· USP monograph specifications
· FCC Food Chemicals Codex
European Union
· European Pharmacopoeia (EP) standards
· Novel Food Regulation compliance (varies by member state)
Other Markets
· Japanese Pharmacopoeia (JP)
· Health Canada Natural Health Products Regulations
We provide regulatory support documentation including:
· Master File references
· Country-specific compliance letters
· Allergen statements
· BSE/TSE certificates
· Non-GMO declarations


Q; What creates sulphur smell?
A: Thiol (-SH) smells distinctively. This is typical, real NAC. Proper packing reduces odours.
Q: Can I obtain less than 25kg?
A: Our minimum order is 25kg. Our product development samples are free up to 100g.
Q: What distinguishes USP and EP grades?
A: Each is highly pure. USP is for North America, EP for Europe. Both standards are met by our product.
Q: How to avoid manufacturing oxidation?
A: Air and moisture exposure should be limited. Work in low-humidity (<50% RH) settings with nitrogen blanketing for bulk processing.
Q: Are custom particle sizes available?
A: Yes, liquid suspensions have 80-120 mesh micronised versions. Custom milling takes 3-4 weeks.
Q: What documentation comes with each order?
A: · Certificate of Analysis
· Safety Data Sheet (SDS)
· Kosher/Halal certificates
· Non-GMO declaration
· Allergen statement
Earth Made Nutritions Inc. has supplied raw materials to dietary supplement manufacturers since 2018. Our team includes food scientists and quality assurance specialists with backgrounds in pharmaceutical production.
We focus on amino acid derivatives, antioxidants, and specialty nutrients for the health products industry.
Our Approach:
· Direct manufacturer relationships
· Batch-to-batch consistency testing
· Technical formulation support
· Transparent documentation
Do you have more questions about N-Acetyl-L-Cysteine powder?
Email: info@em-herb.com