Red Viagra (Sildenafil Citrate 150 mg) Tablets

Red Viagra is our catalog name for a 150 mg sildenafil oral tablet supplied as sildenafil citrate, a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction. We offer packages of 10, 20, 30, 60, 90, 120, and 180 pills. The sections below explain how sildenafil works, how the unusually high 150 mg strength relates to standard dosing, and what to watch for before, during, and after treatment.

Red Viagra (Sildenafil Citrate 150 mg): Medicine Overview

Composition and Active Ingredient

Each Red Viagra tablet we supply provides 150 mg of sildenafil as sildenafil citrate and is intended for oral administration. Sildenafil belongs to the PDE5 inhibitor drug class. During sexual stimulation, nitric oxide signaling increases levels of cyclic GMP in the corpus cavernosum. Sildenafil limits the breakdown of cyclic GMP by PDE5, helping smooth muscle relax and increasing blood flow into the penis to support an erection. It does not produce an erection without accompanying sexual stimulation.

Use Cases

Sildenafil is established for treating erectile dysfunction in adult men, and this is the recognized use for the Red Viagra tablet we carry. It does not treat premature ejaculation, increase sexual desire on its own, or provide contraception or protection against sexually transmitted infections. Sildenafil at other strengths and in products with different dosing instructions is also used medically for pulmonary arterial hypertension, but that is a distinct treatment context and is not the basis for using this 150 mg tablet.

Prescription Requirement

Sildenafil is authorized for human medicinal use in the United States, and oral sildenafil tablets are prescription medicines. The 150 mg strength exceeds the standard US-labeled maximum single dose of 100 mg for erectile dysfunction, so appropriate use depends on an individualized assessment rather than routine self-selection. Our ordering requirement is not stated here as a medical classification. Our pharmacist-supported team is available 24/7 by email, online chat, and phone to answer questions about our service, and customers should discuss their health history, current medicines, and an appropriate sildenafil dose with a prescriber before starting treatment.

General Dosing and Warnings for Red Viagra

How and When to Take Red Viagra

For erectile dysfunction, standard sildenafil labeling generally recommends a 50 mg starting dose taken as needed about one hour before sexual activity. Depending on effectiveness, tolerability, health conditions, and interacting medicines, a prescriber may adjust that dose within the usual 25-100 mg range, with no more than one dose in 24 hours. Sildenafil may begin working in about 30 to 60 minutes, and its effect can remain useful for up to approximately four hours, although timing varies by person.

Red Viagra can be swallowed with water and taken with or without food, but a large, high-fat meal can delay its onset. Because this product contains 150 mg in each tablet, it is above the labeled maximum single dose for erectile dysfunction and should not be taken unless a prescriber has specifically assessed that dose. Do not take a second tablet, combine it with another sildenafil product, or divide the tablet to create a lower dose unless the product information confirms that it can be split and a prescriber has provided clear instructions.

Missed Dose

Because sildenafil for erectile dysfunction is taken as needed rather than on a fixed daily schedule, a traditional missed dose usually does not apply. If a planned dose was not taken before an earlier occasion, do not take an extra tablet afterward. Take only the dose directed for the next occasion, allowing the prescribed interval to pass, and never double doses to make up for a tablet that was skipped.

Overdose

Taking more sildenafil than directed, particularly at this 150 mg strength, can increase the risk of severe headache, flushing, dizziness, low blood pressure, fainting, vision or hearing changes, and a prolonged, painful erection. A suspected overdose requires prompt advice from emergency services or a poison control center. An erection lasting more than four hours is a medical emergency because delayed treatment can cause permanent tissue damage.

Precautions Before Using Red Viagra

Allergy Warnings

Red Viagra should not be used by anyone with a known hypersensitivity to sildenafil or any inactive ingredient in the tablet. There is no established broad allergy cross-reactivity restriction beyond hypersensitivity to sildenafil or a product component. Anyone who develops swelling of the face, lips, tongue, or throat, difficulty breathing, or a widespread rash after a dose should seek urgent medical care.

Health Condition Warnings

Sildenafil must not be combined with organic nitrates or nitric oxide donors in any form, including nitroglycerin, isosorbide products, or recreational "poppers," because the combination can cause a dangerous fall in blood pressure. It must also not be used with guanylate cyclase stimulators such as riociguat. If chest pain occurs after sildenafil, seek urgent medical help, do not take a nitrate, and tell the treating professionals when sildenafil was taken.

Prior medical evaluation is important for men whose heart condition makes sexual activity inadvisable, as well as those with a recent heart attack or stroke, unstable angina, serious heart rhythm problems, uncontrolled high or low blood pressure, significant liver or kidney impairment, a bleeding disorder, active peptic ulcer disease, or an anatomical penile condition. Extra caution is also appropriate with retinitis pigmentosa, a history of sudden vision loss from non-arteritic anterior ischemic optic neuropathy, sudden hearing loss, or a predisposition to priapism, such as sickle cell disease, leukemia, or multiple myeloma.

Diabetes alone does not require a sildenafil-specific dose adjustment, although cardiovascular health and other medicines still need consideration. Red Viagra is intended for erectile dysfunction in adult men and is not intended for anyone under 18. Sildenafil may be used in other medical settings involving women, pregnancy, or breastfeeding, but only under condition-specific clinician guidance. Because it can cause dizziness, blurred vision, or changes in color vision, customers should learn how sildenafil affects them before driving or operating machinery.

Red Viagra Side Effects

The most commonly reported effects of sildenafil include headache, facial flushing, nasal congestion, indigestion, nausea, dizziness, back or muscle discomfort, and temporary visual effects such as blurred vision, light sensitivity, or a blue tinge to vision. These effects are often mild and improve as the medicine wears off, but adverse effects can become more likely or more pronounced at higher doses. The 150 mg strength should therefore not be treated as a routine way to improve results if a lower dose has not worked.

Stop taking sildenafil and obtain urgent medical care for chest pain, fainting, symptoms of a severe allergic reaction, a sudden decrease or loss of vision, a sudden decrease or loss of hearing, or an erection lasting longer than four hours. Ringing in the ears or dizziness can accompany sudden hearing changes. Persistent or troublesome nonurgent effects should be discussed with a prescriber, who can assess whether the dose, an interaction, or another condition is contributing.

Medicine Interactions With Red Viagra

Sildenafil's best-documented and most serious interaction is with nitrate medicines and nitric oxide donors, which must be avoided because of the risk of severe hypotension. Riociguat and other guanylate cyclase stimulators are also contraindicated. Alpha-blockers and other blood pressure medicines can further lower blood pressure when combined with sildenafil; a patient should be stable on that treatment, and dose selection and timing should be directed by a prescriber.

Red Viagra should not be combined with another PDE5 inhibitor, such as tadalafil, vardenafil, or avanafil, or with another sildenafil-containing medicine. Strong CYP3A4 inhibitors, including ketoconazole, itraconazole, clarithromycin, and ritonavir, can substantially increase sildenafil exposure and may require a much lower sildenafil dose or avoidance. Other medicines, including some HIV treatments, antifungals, antibiotics, and CYP3A4 inducers, can also alter sildenafil levels or effectiveness. Grapefruit products may affect sildenafil metabolism, while larger amounts of alcohol can add to dizziness, impaired judgment, and blood-pressure-lowering effects. Providing a prescriber or pharmacist with a complete list of prescription medicines, nonprescription products, supplements, and recreational substances helps identify relevant interactions before use.

After Using Red Viagra

Storage

Store Red Viagra tablets at room temperature between 68°F and 77°F, away from moisture, direct heat, and light. Keep the tablets in their original packaging until needed, and keep them out of reach of children and pets. Do not use tablets that are damaged, discolored, or past their expiration date.

Disposal

Unused or expired Red Viagra tablets should not be flushed down the toilet or poured down a drain. A community drug take-back program or a pharmacy that accepts unused medicines is the preferred option. If no take-back service is available, mix the tablets without crushing them with an unappealing substance such as used coffee grounds or cat litter, seal the mixture in a container or bag, and place it in household trash. Remove or obscure personal information on the original packaging before discarding it.

Red Viagra, Other Sildenafil Products, and Treatment Alternatives

Several products we carry contain the same active ingredient but may differ in strength, dosage form, inactive ingredients, or product instructions. Customers comparing sildenafil options can review Viagra, Viagra Soft, Viagra Professional, Viagra Super Active, and Kamagra. Our sildenafil page also provides a direct route to options organized around the active ingredient. Product names should not be used to assume that two tablets have the same strength or can be substituted dose for dose.

Other oral PDE5 inhibitors include tadalafil, vardenafil, and avanafil. Tadalafil generally has a longer potential duration of action than sildenafil, while onset, food effects, interactions, and available dosing schedules vary among the medicines. Non-tablet approaches include vacuum erection devices and clinician-prescribed treatments such as alprostadil. Counseling or treatment of an underlying cardiovascular, hormonal, neurologic, or medication-related cause may also be appropriate. A prescriber can help select an alternative based on desired timing, previous response, adverse effects, and cardiovascular safety. Customers comparing broader treatment options can also browse our Erectile Dysfunction category.