Who we serve

Bulk APIs for 503A compounding pharmacies and 503B outsourcing facilities

One source for your ingredients, and the production behind them. FDA-registered, cGMP manufacturers. Every lot tested and documented.

Reviewed by US Wholesale Peptides Quality TeamLast reviewed

  • FDA-registered, cGMP manufacturers
  • Every lot tested and documented
  • Cold chain shipping for ingredients that need it
  • Domestic and international stock
  • Supplier questionnaire completed for you

Short answer

We supply bulk active ingredients to 503A compounding pharmacies, 503B outsourcing facilities and product development groups. Every manufacturer is FDA-registered and cGMP, every lot is tested and documented, and ingredients that need it ship cold chain. Send your list and license details. We verify your license and reply with pricing.

Want the full list? See the ingredients we supply.

What slows down sourcing bulk ingredients?

Five suppliers, five sets of paperwork. An ingredient that is never in stock. Documents that arrive after the order, when your quality team needed them before.

Your ingredients have to stand up to an inspection. Your supplier should make that easy.

How do we make it easier?

  • Registered, cGMP manufacturers. Every manufacturer we source from is registered with FDA and operates under current good manufacturing practice.
  • Every lot tested. Each lot is tested before it ships, and its certificate of analysis travels with it.
  • Full documentation. Manufacturer details, lot records and the supporting documents your supplier file needs, from licensed entities at every step.
  • Your supplier questionnaire, completed. Tell us what your qualification process needs. We provide our licensing and complete your questionnaire.
  • Green list sourcing for GLP-1 ingredients. Our GLP-1 ingredients come from manufacturers on FDA's green list, the agency's import list for GLP-1 active ingredients.
  • Cold chain shipping for ingredients that need it. Every shipment is traceable to its lot.

What comes with each lot?

A certificate of analysis for that lot, manufacturer and registration details, and the supporting records your supplier file needs. It comes with every order. Tell us if your quality team needs anything more.

Can you source what is not listed, or make the finished product?

Usually, yes. We built a network of manufacturers in the United States and abroad, which keeps the ingredients you reorder in stock and lets us source specialty ingredients on request. Orders run from a small restock to a large custom production run.

Need more than the ingredient? We develop and produce finished product through our network of 503A pharmacies, 503B facilities and manufacturing partners, from formulation to finished product, including capsules and tablets and large batch runs.

How does a quote work?

  1. Tell us what you need. The ingredients, your license, and anything your quality team requires.
  2. We verify your license. Ingredients go to licensed pharmacies, registered facilities and qualified development groups.
  3. You receive pricing for what you asked for.
  4. Order and reorder through one contact. The same person, the same paperwork, every time.

Who is this for?

  • 503A compounding pharmacies. Ingredients and documentation for patient-specific compounding.
  • 503B outsourcing facilities. Supply and paperwork at production scale.
  • Product development groups. Ingredients, formulation and production runs for a new product.

Common questions

Are your API manufacturers FDA-registered and cGMP?

Yes. Every manufacturer we source from is registered with FDA and operates under current good manufacturing practice. Manufacturer details are part of the documentation that comes with each lot.

What documentation comes with each lot?

A certificate of analysis for that lot, manufacturer and registration details, and the supporting records your supplier file needs. It comes with every order.

Can you source an ingredient that is not listed?

Usually, yes. We source specialty ingredients through our manufacturer network in the United States and abroad. Name it in your quote request.

Do you ship cold chain?

Yes, for ingredients that need it.

How do I qualify you as a supplier?

Request a quote and tell us what your qualification process needs. We provide our licensing and the manufacturer documentation with every order, and complete your supplier questionnaire.

Ingredients go to licensed pharmacies, registered facilities and qualified development groups. US Wholesale is not a pharmacy and does not compound or dispense medication.