Trimix vs. Bimix vs. Quadmix: Which Injectable ED Treatment Is Right for You? (And What Each One Costs)

Start with a private consultation. Complete your information, connect with a licensed U.S. physician, and get clear guidance on the injectable ED treatment that fits your needs.

Trimix, Bimix, and Quadmix are prescription injectable treatments for erectile dysfunction. They work directly on the erectile tissue to increase blood flow and produce an erection.

But they are not identical.

They use different combinations of medications. They come in different strengths. They may be priced differently. And the right choice depends on your medical history, previous treatment results, side effects, and treatment goals.

Here’s the simple breakdown.

What is Trimix?

Trimix is a compounded injectable ED medication made with three ingredients:

• Papaverine

• Phentolamine

• Alprostadil

These medications relax smooth muscle and widen blood vessels in the penis. The result is increased blood flow and an erection.

Unlike oral ED medications, Trimix does not depend on sexual stimulation or nerve signals in the same way. That is why it may be considered when medications such as Viagra or Cialis have not provided a satisfactory result.

Trimix is available in multiple concentrations. A stronger formula is not automatically better. Your physician selects the formulation and starting dose based on your health history and response.

Learn more in our Trimix FAQs.

Trimix vs. Bimix vs. Quadmix: quick comparison

Treatment	Main ingredients	Common reason it may be considered	Key point
Bimix	Papaverine + phentolamine	Men who may not tolerate alprostadil	Does not contain alprostadil
Trimix	Papaverine + phentolamine + alprostadil	A common injectable option for men who need more response than oral medication provides	Three-drug combination with flexible strengths
Quadmix	Papaverine + phentolamine + alprostadil + atropine	Men who need a different or stronger compounded formulation	Four-drug combination; physician-directed use is important

These medications are compounded prescriptions. The exact concentration, volume, and price may vary by pharmacy and prescription.

Do not compare formulas by name alone. A “strong” Bimix, Trimix, or Quadmix may be different from another pharmacy’s formula.

Bimix: an option without alprostadil

Bimix usually contains:

• Papaverine

• Phentolamine

It does not contain alprostadil, also called prostaglandin E1 or PGE1.

That matters because alprostadil is the ingredient most often associated with aching or penile discomfort in injectable ED treatment. Some men who experience pain with alprostadil may discuss Bimix with their physician.

Bimix may be considered when:

• You have discomfort with alprostadil

• You need an alternative to a prostaglandin-containing formula

• Your physician believes a two-drug combination is appropriate

• You have not responded well to another formulation

Bimix is not automatically “weaker” in every real-world situation. The strength depends on the prescribed concentration and dose.

Your physician still needs to determine the right formulation. Never switch from Trimix to Bimix on your own.

Trimix: the familiar three-drug option

Trimix combines three medications that work together:

• Papaverine

• Phentolamine

• Alprostadil

This combination is widely used in injectable ED treatment. It may be considered for men who do not get a reliable response from oral medications or who need a treatment that works more directly.

Trimix may offer:

• Fast onset

• Precise dose control

• A range of available strengths

• A treatment plan based on your response

• Use at home after proper medical instruction

Trimix requires careful handling and physician-guided dosing. The medication is commonly refrigerated because alprostadil can lose potency over time.

The goal is not the strongest possible erection. The goal is a reliable erection that lasts long enough for sex without lasting too long.

Quadmix: a four-drug formulation

Quadmix generally combines the three ingredients in Trimix with atropine:

• Papaverine

• Phentolamine

• Alprostadil

• Atropine

It may be discussed when a patient needs a different formulation or has not achieved an adequate response with another injectable option.

Quadmix is not a routine upgrade that everyone needs. More medication does not automatically mean a better result. It may also change the side-effect profile and requires careful prescribing.

Your physician may consider Quadmix based on:

• Your response to Trimix or Bimix

• The strength you have already tried

• Your medical history

• Your tolerance of alprostadil

• Your desired treatment response

• Your risk of prolonged erection or other complications

What does Trimix cost?

Trimix pricing depends on more than the medication name.

Rx Buyers Club USA currently lists several Trimix formulas. Posted prices include:

• 5 mL Trimix vials: approximately $151 to $152

• 10 mL Trimix vials: approximately $246.50 to $256.50

• Higher-strength Tri-Max formulas: approximately $183.50 for 5 mL and $304.50 for 10 mL

• Bimix: a listed 10 mL formula at approximately $295

• Quadmix: approximately $189.50 to $217.50 for 5 mL and $313 to $429 for 10 mL

These are listed medication prices, not a guaranteed quote. Prices can change based on the formula, concentration, vial size, pharmacy, shipping, and prescription requirements.

See the current Trimix formulas and pricing before ordering.

What drives the price?

Trimix pricing, Bimix pricing, and Quadmix pricing may change based on:

• Medication concentration

• Number of ingredients

• Vial size

• Compounding pharmacy

• Shipping method

• Supplies included

• Prescription and consultation fees

• Refill or limited-refill terms

A larger vial may cost more upfront but provide a lower cost per use. Your actual cost per injection depends on your prescribed dose and how often you use the medication.

Ask for the full cost, not only the price of the vial.

What is the telemedicine consultation fee?

Rx Buyers Club USA currently lists a $155 total service fee, which includes:

• $59 membership fee

• $96 telemedicine physician prescription fee

• Limited refills, listed as three total fills

Medication cost is additional.

The service does not operate as a monthly subscription. You are not signing up for an automatic monthly medication charge simply to keep access open. Medication is ordered and fulfilled according to your prescription and treatment needs.

Always confirm current checkout terms before submitting payment.

Why there is no monthly subscription

ED treatment should not force you into a recurring membership you do not need.

A no-monthly-subscription model keeps the process straightforward:

• Pay for the consultation and service provided

• Receive a prescription if medically appropriate

• Order medication when you need it

• Refill according to your prescription

• Contact support when you have questions

Simple. Private. No unnecessary recurring charge.

How a physician decides which formula fits

Your physician may review:

• Your current and past ED treatments

• Whether Viagra, Cialis, or another oral medication worked

• Your cardiovascular and general health

• Diabetes, high blood pressure, or prostate surgery history

• Current prescriptions and supplements

• Any history of penile pain or curvature

• Your response to previous injections

• Your risk of priapism

• Your comfort with self-injection

• Your treatment goals

The physician may recommend Bimix if alprostadil-related discomfort is a concern. Trimix may be considered when a three-drug combination is appropriate. Quadmix may be considered when a different or stronger formulation is medically necessary.

The decision is personal. Your formula is not interchangeable with another patient’s formula.

Important safety points

Injectable ED treatment requires medical guidance.

• Use only the prescribed formulation and dose.

• Do not copy another person’s dose.

• Do not switch between Bimix, Trimix, and Quadmix without medical approval.

• Do not inject again because the first dose seems slow.

• Do not combine injectable treatment with oral ED medication unless your physician approves it.

• Follow your pharmacy’s storage instructions.

• Use proper injection training and sterile supplies.

A rigid erection that approaches or reaches four hours is a medical emergency. Seek immediate emergency care. Prolonged erections can cause permanent damage.

For injection technique and safety information, review our Trimix injection best practices and step-by-step Trimix injection guide. You can also review patient education from UCSF Health and Memorial Sloan Kettering Cancer Center.

Get help choosing the right option

You do not need to figure out the difference between Bimix, Trimix, and Quadmix by yourself.

Complete your medical information.

Connect with a licensed U.S. physician.

Get a prescription if approved.

Have it filled through a U.S. pharmacy.

Receive discreet delivery at home.

Rx Buyers Club USA provides private telemedicine consultations, U.S. pharmacy fulfillment, discreet shipping, and real people available by phone, no automated menus, no AI, no runaround.

Start your private consultation or call 972-737-8227 with questions about online Trimix prescriptions, Bimix, Quadmix, pricing, or the ordering process.

Private care. Clear answers. Real support, from consultation through delivery.