Where Do Medications Come From?

A week has passed since your prescription was written, and nothing has changed.

No notification. No update. Just the assumption that something should be ready by now. When you finally check in, the answer is unexpected: this medication is on backorder.

Frustration is understandable at that moment. The prescription was sent. The need is real. And from the outside, it can feel like something simply stalled.

In reality, the delay often begins long before a pharmacy ever touches the prescription — in a supply chain that most patients never see. 

To understand why this happens, it helps to look upstream — at where medications come from and how they move before they ever reach a local pharmacy.

Medications Don’t Start at the Pharmacy 

When a prescription is written, it’s easy to picture the pharmacy as the starting point. Shelves, bottles, and labels make it feel like medications simply live there, waiting to be picked up.

In reality, pharmacies sit at the very end of a much longer journey. Medications are first manufactured, then distributed through regional wholesalers, before finally arriving at a local pharmacy. Each step happens outside the pharmacy’s direct control.

By the time a prescription reaches the counter, availability has already been shaped by manufacturing capacity, quality checks, shipping timelines, and allocation decisions made far upstream.

This is why a medication can be prescribed correctly, processed promptly, and still not be immediately available. The pharmacy isn’t the source — it’s the final stop.

Understanding that journey helps explain why shortages happen — and why they can be difficult to resolve quickly.

Manufacturers: One Drug, Few Factories 

Many people assume that if a medication exists, it’s being made in lots of places. In reality, that’s often not the case — especially for generic medications.

For many commonly used drugs, only a small number of manufacturers produce the active ingredient or the finished product. Sometimes it’s just one or two factories supplying the entire country.

When production is concentrated like this, even a minor disruption can have widespread effects. A quality issue, equipment failure, raw material delay, or regulatory hold at a single facility can ripple across the supply chain for months.

Because pharmacies don’t manufacture medications themselves, they feel those ripples downstream. A drug that was readily available one month can suddenly become scarce the next — not because demand changed, but because supply did.

Wholesalers: Allocation, Not Abundance 

Once medications are manufactured, they don’t ship directly to pharmacies. Instead, they move through regional wholesalers — the intermediaries responsible for distributing drugs to pharmacies across large geographic areas.

When supply is limited, wholesalers don’t operate on a first-come, first-served basis. Instead, they use allocation systems designed to spread available inventory across many pharmacies.

That means a pharmacy can place an order for a medication and still receive only a portion of what was requested — or none at all. The medication isn’t being withheld; there simply isn’t enough supply to meet demand everywhere at once.

From the pharmacy’s perspective, this can feel counterintuitive. An order is placed correctly and on time, yet the medication never arrives. From the patient’s perspective, it can feel like nothing happened. In reality, the limitation exists several steps upstream.

Allocation systems are meant to distribute scarcity, not create it.

Why Pharmacies Can’t Stock Everything

It’s easy to assume that pharmacies could avoid shortages by simply keeping more medication on hand. In reality, stocking decisions are more complex — and more constrained — than they appear.

There are thousands of prescription medications on the market, each with different strengths, dosage forms, storage requirements, and expiration dates. Many medications are used infrequently, but must still be stored, tracked, and discarded once they expire.

Pharmacies also purchase medications upfront. That means inventory ties up capital, and expired or unused medications can’t always be returned or repurposed. Stocking more of everything would increase waste without reliably improving availability.

Instead, pharmacies aim to keep commonly used medications readily available while ordering others as needed. When supply is stable, this works well. When supply is constrained upstream, even well-planned inventory can fall short. 

The goal isn’t to carry everything — it’s to make sure the right medications are available when they’re needed most.

What Happens When Something Isn’t Available 

When a particular medication isn’t immediately available, the work doesn’t stop — it shifts.

Pharmacists begin by confirming whether the issue is temporary or ongoing. They check alternate suppliers, review expected delivery timelines, and assess whether a different manufacturer or formulation may be appropriate.

In some cases, a safe substitute can be made without changing the intended therapy. In others, the pharmacist may contact the prescriber to discuss alternatives or timing, especially when a medication is critical or time-sensitive.

Much of this coordination happens before a patient is ever notified. By the time someone hears that a medication is on backorder, several steps have usually already taken place behind the scenes.

While shortages can’t always be solved quickly, the goal is to minimize disruption and make sure patients understand their options — not leave them guessing.

How these disruptions are handled can make a meaningful difference in patient care — especially for people managing chronic conditions.

Why This Matters 

When medications aren’t available as expected, the impact is felt most by patients — especially those managing chronic conditions or starting a new therapy. A delay can mean missed doses, prolonged symptoms, or uncertainty about what to do next.

Understanding where these delays begin helps put them in context. Shortages and backorders are rarely caused by inaction at the pharmacy. More often, they reflect limitations that originate far upstream, long before a prescription reaches the counter.

How these situations are handled matters just as much as why they happen. Clear communication, thoughtful alternatives, and realistic expectations can reduce frustration and help patients make informed decisions about their care.

When supply chains are fragile, the role of the pharmacy becomes less about simply dispensing and more about navigating complexity on behalf of the patient.

And supply is only one part of the story — coverage and cost add another layer of complexity that patients encounter every day.

What Can I Do?

Medication shortages can feel frustrating and out of your control - but there are a few practical steps that can help move things forward faster for you and your pharmacy team:

1) Identify What Kind of Medication It Is

Ask (or look up):

• Is this a brand-only drug?

• Is it a high-cost specialty medication?

• Is it a unique formulation (liquid, injection, extended-release, etc.)?

If the answer is yes, availability is often tied to limited manufacturing and allocation - meaning supply is tight everywhere.

What helps most here:

• If your insurance covers the medication, try calling a few nearby pharmacies.

• Different pharmacies use different wholesalers and suppliers - one store may still have access when another doesn’t.

2) If It’s a Lower-Cost / Common Medication

Examples might include many generics for blood pressure, cholesterol, antibiotics, etc.

In these cases, there are often therapeutic alternatives that work just as well.

A helpful next step:

• Send your prescriber a message through the patient portal.

• Ask if an alternative medication could be prescribed due to the backorder.

This can save significant time - especially if the pharmacy team is managing dozens of shortage issues at once. The pharmacy typically doesn't have "special acess" to talk to your doctor, and often has to leave a message to be returned the next day.

Patient messages to the provider via a patient portal, however, are often checked throughout the day as the prescriber uses their computer multiple times a day to chart interactions with patients.

3) Why This Matters

Pharmacies work hard to locate supply, call wholesalers, and check availability — but during widespread shortages, options can be limited.

When patients:

• Call other pharmacies for brand/specialty items

• Contact prescribers about alternatives for common meds

…it creates a team approach that helps everyone move faster — and gets you treated sooner.

Why We’re Sharing This 

We’re sharing this because medication availability is one of the most common sources of confusion and frustration for patients — and it’s often misunderstood.

Pharmacies are frequently seen as the starting point for prescriptions, when in reality they operate at the very end of a long and interconnected supply chain. Without that context, delays can feel personal or preventable when they aren’t.

By explaining how medications are made, distributed, and allocated, we hope to make these experiences easier to understand and less frustrating to navigate.

This series is designed to build that understanding step by step, so patients can better anticipate challenges, ask better questions, and feel more informed about their care.

Real World Example 

Imagine a patient who has been stable on the same insulin for years. Their prescription is written correctly, and it’s covered by their insurance with a predictable copay.

When the prescription reaches the pharmacy, though, that specific insulin is on national backorder. The pharmacy can’t obtain it from the wholesaler, even though the order is placed on time.

A biosimilar version of the insulin is available. Clinically, it’s an appropriate alternative. But there’s a catch: that version isn’t on the patient’s insurance formulary.

As a result, the covered option isn’t available, and the available option isn’t covered. If the patient chooses to pay out of pocket, the cost may be hundreds of dollars — far more than they’ve ever paid before.

In this situation, the delay and confusion aren’t caused by a mistake at the pharmacy. They’re the result of multiple systems intersecting at once: manufacturing shortages, distribution limits, and insurance coverage rules that don’t automatically adjust when supply changes.

For patients who can’t afford to pay out of pocket, the choice isn’t between two insulins — it’s often between delaying treatment or going without altogether. That can mean missed doses, unstable blood sugar, emergency visits, or long-term complications that carry far greater personal and financial costs than the medication itself.

In these moments, the issue isn’t whether a medication exists. It’s whether the systems designed to deliver it are flexible enough to meet a patient’s needs when circumstances change.

Has a medication delay ever put you in a difficult situation? Feel encouraged to let us know. We'd like hearing from our community about how we can best support you.

TL;DR

• Medication delays often begin upstream, not at the pharmacy.

• Shortages can limit access even when a prescription is written correctly.

• Coverage rules can turn availability into a cost problem for patients.

Help shape a better pharmacy in Spring Hill

We’re collecting our first 100 community responses to better understand what people want — and don’t want — from a local pharmacy.

Once we reach 100 responses, we’ll randomly draw one respondent to receive a $50 Visa gift card, and we’ll announce the winner in a future newsletter.

If you’ve already responded, thank you! If not, we’d really value your input — and feel free to share the survey with a neighbor or friend who lives nearby.

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