Please note: a valid prescription is required for all prescription medication.
Buy Humulin R Vial online with a valid prescription, and compare current listed pricing, the U-100 vial presentation, and key safety basics before checkout. This listing lets you match the selected insulin regular human vial to your prescribed product, review practical access factors, and check handling needs for US delivery from Canada. Humulin R is a regular human insulin injection, so vial units, storage, and blood sugar safety details matter when ordering.
Before adding it to checkout, compare the product name, concentration, vial size, and quantity shown on the page. If your prescription names regular insulin U-100, confirm it does not call for a pen, cartridge, premixed insulin, NPH insulin, rapid-acting analog, or concentrated U-500 insulin.
Humulin R Vial Price and Available Options
The Humulin R vial price shown on this page should be read together with the selected presentation. This product is commonly listed as a Humulin R 100 units/mL 10 mL vial, also described as a Humulin R U-100 vial. U-100 means the insulin contains 100 units in each mL.
A 10 mL U-100 vial contains 1,000 units total. That total is not a single dose, and it should not be used to estimate how much insulin you need. It helps you compare vial contents, quantity, and current listed price without confusing total units with your prescribed directions.
Customers comparing Humulin R cost without insurance should look at the selected vial count and any cash-pay or coverage path shown at checkout. Different insulin types, devices, and pack sizes may appear as separate listings. The Insulin collection can help you compare product categories without treating them as interchangeable.
| What to check | Why it matters |
|---|---|
| Product name | Confirms the selected item is regular human insulin. |
| Strength | U-100 means 100 units/mL. |
| Vial size | 10 mL equals 1,000 total units. |
| Quantity | More vials change total contents and checkout amount. |
| Presentation | A vial requires compatible U-100 syringes. |
| Rx details | The product should match the prescribed insulin and concentration. |
Quick tip: Compare the current listed amount only after selecting the exact vial presentation and quantity.
How to Order This Vial Online
To buy Humulin R vial online, start by matching the listing to the name and strength on your prescription. Check that the selected item says U-100 and that the vial format is correct. Then enter the order details requested at checkout and keep prescriber contact information available.
Because this is prescription insulin, the checkout process may confirm details with your prescriber when needed. Supporting documents may also be requested for some orders. These steps help keep the selected product aligned with the prescribed insulin, concentration, and presentation.
For US shipping from Canada, confirm that the shipping address, patient information, and product quantity are consistent before submitting the order. Do not substitute another insulin because it looks similar or appears in the same category. Insulin products can differ in onset, peak, duration, concentration, and device requirements.
If you are unsure whether your prescription is written for a vial, cartridge, or pen, pause before checkout and ask the prescriber or clinic to clarify. This is especially important when the written directions use brand names, abbreviations, or concentration shorthand.
Product Details That Affect Ordering
Humulin R regular insulin is a short-acting insulin made to match human insulin. It is used by injection and is usually part of a broader diabetes plan that may include meals, glucose monitoring, activity planning, and other medicines. Your clinician determines whether it fits your treatment plan.
The Humulin R insulin vial on this page is not the same as Humulin R U-500. U-500 is a concentrated insulin product with a different strength and higher dosing-risk if confused with U-100. If your prescription mentions U-500, this U-100 vial is not the correct match.
- Concentration: U-100 means 100 units/mL.
- Total contents: 10 mL provides 1,000 units per vial.
- Appearance: Regular insulin should be clear and colorless.
- Device needs: Vials are drawn with compatible syringes.
- Product class: Regular insulin differs from NPH, premixed, basal, and rapid-acting products.
Regular insulin is often prescribed around meals, but timing is individualized. Do not change injection timing, route, or amount based on product page information. The Types Insulin Onset Peak Time Duration resource can help you understand product-class differences while your prescription remains the source for personal directions.
What Regular Human Insulin Is Used For
Humulin R human insulin injection is used to help control high blood glucose in people with diabetes when prescribed. It replaces or supplements insulin activity so glucose can move from the bloodstream into body tissues. It may be used in type 1 diabetes or type 2 diabetes, depending on the treatment plan.
This medicine is a regular insulin, sometimes called short-acting insulin. It is not a rapid-acting analog, long-acting basal insulin, NPH insulin, or premixed insulin. Those differences matter when comparing listings because action time and role in a regimen are not the same.
The phrase regular insulin vial refers to the formulation and container, not a universal dosing schedule. Your order should reflect the exact prescribed product. If the prescription includes another insulin for basal coverage or mealtime use, confirm each item separately instead of combining assumptions across products.
Storage, Handling, and Vial Supplies
Insulin is temperature-sensitive. Unopened vials are typically stored in a refrigerator and protected from freezing, heat, and direct light. If insulin has been frozen, overheated, left in direct sunlight, or looks cloudy when it should be clear, do not use it until a pharmacist or clinician has advised you.
Opened vial instructions depend on the product label. U.S. labeling for Humulin R U-100 states that in-use vials must be discarded after 31 days, even if insulin remains. Always follow the package insert supplied with your vial and any pharmacy label instructions.
Temperature-sensitive insulin may be prepared with cold-chain handling when shipped. When the package arrives, inspect the vial before storing it. The solution should be clear and colorless, and the container should not be cracked, leaking, or missing its protective closure.
- Before use: Check the label and concentration.
- Supplies: Use only syringes meant for U-100 insulin.
- Sharps safety: Dispose of needles in an approved container.
- Travel: Keep insulin protected from extremes.
- Vial care: Avoid shaking or contaminating the stopper.
Vial orders also require the right injection supplies. If you are comparing vials with pens, the Insulin Pen Vs Syringe comparison can help you understand device differences before matching your order to the prescription.
Safety Checks Before Checkout
Do not use Humulin R during an episode of hypoglycemia, which means low blood sugar. It is also contraindicated in people with hypersensitivity to regular human insulin or any listed ingredient. Check the ingredient information if you have had allergic reactions to insulin products before.
Low blood sugar is the most common and potentially serious insulin-related risk. Symptoms may include sweating, shaking, hunger, dizziness, confusion, fast heartbeat, headache, weakness, or irritability. Severe hypoglycemia can cause seizures, loss of consciousness, or death if not treated promptly.
Other possible effects include injection-site reactions, itching, rash, swelling, weight gain, and fluid retention. Serious allergic reactions can include widespread rash, wheezing, trouble breathing, fast pulse, or swelling of the face, tongue, or throat. Seek urgent medical help for severe symptoms.
Why it matters: A U-100 syringe must match U-100 insulin to reduce dosing errors.
| Safety point | Ordering relevance |
|---|---|
| Low blood sugar plan | Know how your clinician wants lows treated. |
| Correct syringe | Use U-100 supplies with U-100 insulin. |
| Clear solution | Do not use if cloudy, thickened, or discolored. |
| Allergy history | Review prior insulin reactions before ordering. |
| Label match | Avoid confusing U-100 with U-500. |
Keep glucose monitoring supplies available as directed by your care team. If your blood sugar readings are unexpectedly high or low, contact a healthcare professional rather than changing doses on your own.
Interactions and Monitoring Points
Many medicines can change insulin needs or affect blood glucose patterns. Examples include other diabetes medicines, corticosteroids, certain diuretics, beta-blockers, some antidepressants, and medicines that affect potassium. Alcohol, changes in meals, illness, exercise, and stress can also alter glucose response.
Beta-blockers may make some low blood sugar warning signs harder to notice. Thiazolidinediones, a class of diabetes medicines, may increase fluid retention and heart failure risk when used with insulin. Tell your prescriber about heart failure, kidney problems, liver problems, pregnancy, breastfeeding, or major changes in diet or activity.
Some people ask about the 3-hour rule in diabetes. That phrase is commonly used as a practical reminder to avoid stacking short-acting or rapid-acting insulin too close together, but it is not a Humulin R dosing instruction. Ask your clinician how long to wait between correction doses, meals, and activity changes.
Compare Regular, NPH, and Rapid Insulin Options
Humulin R U-100 insulin is a regular human insulin. If your prescriber has named a different product, compare the full product name, concentration, and presentation before selecting anything else. Similar packaging or the same brand family does not mean the medicines can be substituted.
For another regular insulin vial listing, compare Novolin GE Toronto Vial with your prescription. For an intermediate-acting NPH option, compare Humulin N Vials. These are different insulin types, so selection should follow the prescribed product, not convenience alone.
If your clinician discusses human regular insulin alternatives, the Novolin R Vs Humulin R resource may help you frame product-class questions. Keep the final selection tied to the exact name, strength, and format written for you.
Authoritative Sources
Official prescribing information supports safety, storage, contraindication, and product-strength details for this listing.
- FDA prescribing information: Humulin R U-100 label.
- Drug listing and label summary: DailyMed Humulin R monograph.
This content is for informational purposes only and is not a substitute for professional medical advice.
Express Shipping - from $25.00
Shipping with this method takes 3-5 days
Prices:
- Dry-Packed Products $25.00
- Cold-Packed Products $35.00
Standard Shipping - $15.00
Shipping with this method takes 5-10 days
Prices:
- Dry-Packed Products $15.00
- Not available for Cold-Packed products
How many units are in a Humulin R vial?
A Humulin R U-100 10 mL vial contains 100 units per mL, for 1,000 total units in the vial. Total units describe how much insulin is in the container, not how much a person should inject. Your prescribed dose, timing, and frequency must come from your clinician and the pharmacy label. Always use U-100 insulin syringes with U-100 insulin to reduce dosing errors.
What kind of insulin is Humulin R?
Humulin R is regular human insulin. It is considered a short-acting insulin, not a rapid-acting analog, NPH insulin, long-acting basal insulin, or premixed insulin. It helps lower blood glucose when used as prescribed as part of a diabetes treatment plan. Product class matters because different insulin types have different onset, peak, and duration profiles, so they should not be substituted without clinician direction.
How should a Humulin R vial be stored?
Unopened insulin vials are generally stored in the refrigerator and protected from freezing, heat, and direct light. Once opened, follow the package insert and pharmacy label. U.S. labeling for Humulin R U-100 says in-use vials should be discarded after 31 days, even if insulin remains. Do not use insulin that has been frozen, overheated, discolored, cloudy, or contains particles when it should be clear.
What side effects should be monitored with regular insulin?
Low blood sugar is the key safety concern with insulin. Warning signs may include sweating, shaking, hunger, dizziness, headache, confusion, fast heartbeat, weakness, or irritability. Severe hypoglycemia can cause seizures or loss of consciousness. Injection-site reactions, rash, itching, swelling, weight gain, and fluid retention can also occur. Seek urgent medical help for severe allergic symptoms such as trouble breathing, facial swelling, or widespread rash.
What should I ask my clinician before using Humulin R?
Ask your clinician to confirm the insulin name, U-100 concentration, vial format, injection timing, glucose monitoring plan, and what to do for low or high readings. Also review other medicines, alcohol use, meal changes, exercise changes, kidney or liver problems, pregnancy, breastfeeding, and any prior insulin allergy. If your prescription mentions U-500, pen devices, cartridges, NPH, or premixed insulin, clarify before using a U-100 vial.
What is the 3-hour rule in diabetes?
The 3-hour rule is a common phrase some people use when discussing insulin stacking, which means taking additional short-acting or rapid-acting insulin before a previous dose has finished working. It is not a universal Humulin R instruction. The safe interval between doses depends on the insulin type, meal plan, correction plan, glucose readings, and individual health factors. Ask your diabetes care team for instructions specific to your regimen.
Rewards Program
Earn points on birthdays, product orders, reviews, friend referrals, and more! Enjoy your medication at unparalleled discounts while reaping rewards for every step you take with us.
You can read more about rewards here.
POINT VALUE
How to earn points
- 1Create an account and start earning.
- 2Earn points every time you shop or perform certain actions.
- 3Redeem points for exclusive discounts.
You Might Also Like
Related Articles
What Fruits Are Good for Diabetics? How to Choose Wisely
Most people with diabetes can eat fruit. The best choices are whole fruits with fiber, such as berries, apples, pears, citrus, cherries, and kiwi. When people ask what fruits are…
Blood Sugar Normal Range Chart: How to Read Key Numbers
A blood sugar normal range chart gives you a quick way to compare fasting, before-meal, after-meal, and A1C numbers with common clinical cutoffs. It matters because the same glucose value…
Clots and Period: When Menstrual Blood Clots Need Attention
The phrase clots and period usually refers to blood clots that pass during menstruation. In many cases, small clots on the heaviest days are a normal result of brisk bleeding.…
Type 1 Versus Type 2 Diabetes: Symptoms, Causes, and Care
type 1 versus type 2 diabetes comes down to why blood sugar rises. In type 1, the immune system destroys insulin-making cells in the pancreas, so the body makes little…






