Dibenzyline (Phenoxybenzamine)

Do’s

Take Dibenzyline exactly as prescribed by your healthcare provider, usually 2-3 times a day.

Take it with or without food.

Take it consistently at the same time each day.

Continue taking it even if you feel well. High blood pressure often has no symptoms.

Tell your healthcare provider if your condition worsens or doesn't improve.

Don'ts

Don't stop taking Dibenzyline abruptly without talking to your healthcare provider.

Don't take more than the prescribed dose.

Common Side Effects:

Gastrointestinal irritation

Drowsiness

Fatigue

Postural hypotension

Tachycardia

Inhibition of ejaculation

Nasal congestion

Miosis

• Dizziness or lightheadedness, particularly in older adults
• Reduced tolerance to cold temperatures in older patients

Serious Side Effects:

Allergic reactions, although very rare, may include symptoms such as rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, and trouble breathing

Fast heartbeat

Fainting

Sexual problems in males, such as trouble ejaculating

Weakness

Painful or prolonged erection lasting 4 or more hours (in males), which requires immediate medical attention

Severe dizziness or feeling like one might pass out

This is not an exhaustive list, and other side effects may occur. If you experience any unusual or severe side effects while taking Dibenzyline,  contact your healthcare provider for medical advice.

Warnings

Inform your healthcare provider if you have allergies to danocrine, other alpha blockers, or any other medications.

Mention your medical history, especially regarding blood vessel diseases, heart problems, kidney issues, lung infections, or certain eye conditions (cataracts, glaucoma) before using danocrine.

Danocrine may cause dizziness or drowsiness. Avoid driving, operating machinery, or engaging in activities requiring alertness until you can perform them safely.

Limit alcohol consumption and discuss marijuana use with your healthcare provider, as they can worsen dizziness.

Inform your healthcare provider about danocrine use before any surgery, including eye surgeries for cataracts or glaucoma.

Older adults may experience increased dizziness with danocrine, raising the risk of falls.

Danocrine should only be used during pregnancy if absolutely necessary. Discuss risks and benefits with your healthcare provider.

It is unknown if danocrine passes into breast milk. Consult your healthcare provider before breastfeeding.

Danocrine can interact with other medications, affecting how they work or increasing side effects.

Provide your healthcare provider with a list of all medications (prescription, non-prescription, and herbal) you are taking to avoid potential interactions.

Never adjust the dosage of any medications without consulting your healthcare provider.

Where Can I Buy Phenoxybenzamine?

Phenoxybenzamine (the generic form of Dibenzyline) is available at most pharmacies with a valid prescription from your doctor. You can purchase it at local retail pharmacies or through online pharmacy services. If you're looking for a more affordable option, Canadian pharmacies offer competitive pricing on this medication. DoctorSolve is a certified online pharmacy intermediary that connects you with licensed Canadian pharmacies, providing access to safe and genuine Phenoxybenzamine at lower costs. Simply add the medication with your required dosage and pack size to your cart, submit your valid prescription, and your order will typically arrive within 2-1 weeks.

Can I buy Phenoxybenzamine over the counter? 

No, you cannot buy Phenoxybenzamine over the counter in the United States. Its active ingredient, phenoxybenzamine, is only available by prescription because it may cause dangerous low blood pressure and heart rhythm disturbances.