Having trouble finding Hydroxocobalamin in 2026? Learn why this essential B12 injection is in short supply and what you can do to get your prescription filled.
If you've been searching pharmacy after pharmacy for Hydroxocobalamin — the injectable form of vitamin B12 — and coming up empty, you're not imagining things. Across the United States, patients who depend on this medication for conditions like pernicious anemia and B12 deficiency are facing real difficulty getting their prescriptions filled in 2026.
Whether your doctor prescribed Hydroxocobalamin for chronic B12 deficiency, nerve damage, or another condition, running into supply problems can feel stressful and confusing. In this post, we'll explain exactly what's going on, why Hydroxocobalamin is so hard to find right now, and what steps you can take to get the treatment you need.
Hydroxocobalamin is a form of vitamin B12 that's given as an injection, usually into the muscle (intramuscular). It's one of the most effective ways to treat vitamin B12 deficiency, especially in patients who can't absorb B12 through their digestive system — a condition known as pernicious anemia.
Unlike oral B12 supplements, Hydroxocobalamin injections bypass the gut entirely, delivering the vitamin directly into your bloodstream. This makes it the go-to treatment for people with absorption problems caused by gastric surgery, celiac disease, Crohn's disease, or other GI conditions.
Hydroxocobalamin is also the active ingredient in Cyanokit, an IV formulation used in emergency rooms to treat cyanide poisoning. While cyanide poisoning is less common, the emergency use of this drug adds to overall demand.
To learn more about how Hydroxocobalamin works in your body, check out our detailed guide.
There isn't one single reason Hydroxocobalamin is difficult to find. Several factors are working together to create the current shortage.
In December 2025, the primary U.S. manufacturer of generic Hydroxocobalamin injection — Actavis Pharma (distributed by Hikma Farmaceutica) — announced that their 1000 mcg/mL injectable solution would be temporarily unavailable until at least June 2026. The reason? A shortage of the active ingredient needed to manufacture the drug.
When the raw material isn't available, production stops — and it takes months for supply to catch up even after the ingredient becomes available again.
The Cyanokit IV formulation (made by Serb Pharmaceuticals) has also faced problems. Serb placed batches on hold while investigating a quality issue at their contract manufacturer related to sterility assurance. Although the FDA allowed certain batches to be released after they met testing requirements, the disruption slowed supply and created uncertainty in hospitals and pharmacies.
Unlike many common medications, Hydroxocobalamin injection doesn't have dozens of manufacturers competing to produce it. With only a handful of suppliers in the U.S. market, the loss of even one creates a ripple effect across the entire supply chain. When Actavis/Hikma paused production, there simply wasn't enough alternative supply to meet demand.
At the same time, demand for injectable B12 has been growing. More providers are prescribing Hydroxocobalamin for conditions ranging from chronic fatigue to neurological symptoms. Wellness clinics and compounding pharmacies have also driven increased use. When demand rises and supply falls at the same time, shortages become severe.
Being unable to fill your prescription is frustrating, but you have options. Here are practical steps you can take right now:
Medfinder helps you search for pharmacies near you that currently have Hydroxocobalamin in stock. Instead of calling pharmacy after pharmacy, you can check availability online and save time. Visit our guide on finding Hydroxocobalamin in stock for a step-by-step walkthrough.
Chain pharmacies often sell out quickly during shortages. Independent pharmacies and compounding pharmacies sometimes have access to different supply channels. Compounding pharmacies, in particular, can prepare Hydroxocobalamin injections in custom concentrations (such as 10 mg/mL or 20 mg/mL), which may be available even when the standard generic is not.
If Hydroxocobalamin is completely unavailable, your doctor may be able to switch you to another form of B12, such as Cyanocobalamin injections or high-dose oral B12 supplements. These aren't identical, but for many patients they can effectively manage B12 deficiency. Read our full comparison in Alternatives to Hydroxocobalamin.
If you're on a maintenance schedule for pernicious anemia, skipping injections can lead to worsening symptoms including fatigue, numbness, tingling, memory problems, and even irreversible nerve damage. Talk to your doctor right away if you can't get your medication — they can help you find a workaround.
Based on the most recent information, the generic Hydroxocobalamin IM injection from Actavis/Hikma is estimated to return to the market by June 2026. However, drug shortage timelines are often delayed, so it's wise to plan for the possibility of continued supply issues.
The FDA continues to monitor the situation, and compounding pharmacies are helping fill the gap in the meantime. You can check for the latest shortage updates in our 2026 shortage update post.
Hydroxocobalamin is a critical medication for hundreds of thousands of patients who rely on it to manage B12 deficiency and related conditions. The current shortage — driven by active ingredient supply problems, manufacturing issues, and limited producers — is making life harder for patients across the country.
But you don't have to navigate this alone. Use tools like Medfinder to check pharmacy availability, ask your provider about alternatives, and explore compounding pharmacies as a backup option. With the right approach, you can find a way to keep your treatment on track — even during a shortage.
If you're looking for ways to reduce the cost of your Hydroxocobalamin prescription, check out our guide on how to save money on Hydroxocobalamin.
You focus on staying healthy. We'll handle the rest.
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