The Maximus Blood Flow Protocol provides personalized prescription treatment using PDE-5 inhibitors to support healthy blood flow and erectile function. For prescription, refill, and shipping details, see Blood Flow Protocol: Prescriptions, Refills, and Shipping.
What the protocol is
Erections depend on healthy blood flow and proper signaling between the nervous, vascular, and hormonal systems. Many individuals experience changes in sexual performance due to factors like stress, circulation changes, lifestyle factors, or normal aging.
The Blood Flow Protocol uses PDE-5 inhibitors — medications that help relax blood vessels and improve circulation, making it easier to achieve or maintain an erection when sexually stimulated.
Medications used
Your clinician selects a medication based on your health profile and treatment goals:
Tadalafil — longer-acting; supports circulation over an extended period
Sildenafil — shorter-acting; works within a more time-limited window
Vardenafil — rapid-onset; may begin working more quickly for some individuals
Customized formulations, when clinically appropriate
How it works
PDE-5 inhibitors relax smooth muscle around blood vessels, improve circulation to the penis, and support natural erectile function — when paired with sexual stimulation.
Important: these medications do not cause erections automatically. Sexual stimulation is still required. The protocol focuses on consistent, predictable support rather than strictly on-demand use. Over time, some individuals report improved ease of arousal, better performance, and increased confidence.
Who the protocol may be for
You want support for erectile performance
You experience situational or repeated difficulty achieving or maintaining erections
You prefer a reliable and steady therapeutic effect
You want a medically supervised approach to treatment
Who it may not be for
Some individuals are not candidates for PDE-5 inhibitor treatment depending on:
Cardiovascular conditions
Blood pressure concerns
Use of certain medications — especially nitrates (this combination is dangerous and contraindicated)
Specific health risks identified during evaluation
Your clinician reviews your health history to determine whether this protocol is safe and appropriate for you.
What to expect
Experiences vary. Some individuals notice improvements quickly; others see more gradual changes. Your experience depends on overall health, circulation, stress levels, and consistency of treatment.
Early experiences — some individuals report improved erectile firmness, easier arousal when sexually stimulated, and more predictable erectile response. Not everyone notices changes immediately.
Ongoing use — with continued use, individuals may notice improved confidence, more consistent erections during stimulation, and greater reliability in intimate situations.
Lifestyle factors — erectile function is influenced by physical activity, sleep quality, nutrition, alcohol use, and stress levels. Addressing these factors can support treatment effectiveness.
Monitoring progress — your clinician may periodically check in to evaluate how the protocol is working. If changes are needed, your clinician can discuss adjustments.
Side effects
Medications in the Blood Flow Protocol are generally well tolerated when used as directed. However, side effects can occur.
Possible side effects (typically mild and may decrease as your body adjusts):
Headache
Facial flushing
Nasal congestion
Mild dizziness
Digestive discomfort
Medication interactions
Certain medications interact with PDE-5 inhibitors. Always tell your clinician about your prescription medications, over-the-counter medications, supplements, and recreational substances.
Most important interaction: nitrate medications. Nitrates (used for chest pain or some heart conditions) cannot be combined with PDE-5 inhibitors — the combination causes a dangerous drop in blood pressure.
Your clinician evaluates potential interactions before recommending treatment.
Cardiovascular considerations
Because these medications affect blood vessel function, individuals with certain cardiovascular conditions may require additional evaluation before treatment. Your clinician reviews your health history to determine whether the protocol is appropriate.
When to seek urgent care
Seek urgent or emergency care if you experience:
Chest pain or shortness of breath
Severe dizziness or fainting
Sudden changes in vision or hearing
An erection lasting more than 4 hours
Any severe or rapidly worsening symptom
For non-urgent concerns, message your clinician through your patient portal.
How safety is monitored
Your clinician monitors your treatment through symptom check-ins, medication reviews, and ongoing evaluation of safety and effectiveness. Adjustments are made when clinically appropriate.
FAQ
What medications are used? Tadalafil, sildenafil, vardenafil, or a customized formulation, depending on your health profile and treatment goals.
Do these medications cause erections automatically? No. PDE-5 inhibitors support blood flow, but sexual stimulation is still required for an erection to occur.
How quickly do they work? It depends on the medication and your individual response. Tadalafil is longer-acting; sildenafil is shorter-acting; vardenafil may begin working more quickly. Your clinician can explain what to expect for your specific prescription.
Can the Blood Flow Protocol be combined with other Maximus protocols? In many cases, yes. Maximus also offers combined plans — Enclomiphene + Tadalafil, or Enclomiphene + Tadalafil + Vardenafil — that simplify dosing into a single daily tablet. See Enclomiphene Combination Therapies for details. Your clinician evaluates compatibility based on your health profile.
What if I don't notice improvements? Responses vary. If you're unsure whether the protocol is working, message your clinician — they can review your experience and discuss adjustments.
What if I miss a dose? For daily-protocol prescriptions, missing a single dose is usually not a concern — do not double up. For as-needed prescriptions, simply take it before the next intended use. For specific questions, message your clinician.
Can I drink alcohol on Blood Flow medications? Alcohol can affect erectile function on its own and can amplify side effects like dizziness or low blood pressure. Moderation is generally advisable.
Still have questions? For symptoms, dosing, or progress, message your clinician through your Maximus portal. For prescription, refill, and shipping questions, see Blood Flow Protocol: Prescriptions, Refills, and Shipping.