Viagra (sildenafil) is a prescription drug that’s employed to deal with erectile dysfunction (ED) in adults. Like other medicine, Viagra may perhaps have interactions.

Some interactions arise mainly because just one substance causes yet another compound to have a unique effect than expected. For example, at times alcohol, one more drug, or a health supplement can affect how a drug functions in your entire body. Interactions can also arise if you have specific health and fitness disorders.

Preserve examining to discover about Viagra’s possible interactions. And for extra information about Viagra, together with particulars about its makes use of, see this posting.

Using sure drugs or other things could raise your chance of harm if you take Viagra. In that circumstance, your physician could not prescribe Viagra for you. This is regarded as a contraindication. The record below contains contraindications of Viagra.

If you just take a nitrate drug. Making use of Viagra jointly with a nitrate can induce your blood stress to drop to dangerously very low amounts. Due to this risk, health professionals will not prescribe nitrate medications and Viagra jointly. Examples of nitrates include nitroglycerin (Nitrostat, NitroMist) and isosorbide dinitrate (Isordil).

If you consider a guanylate cyclase (GC) stimulator drug. Making use of Viagra collectively with a GC stimulator can consequence in your blood pressure dropping to dangerously low amounts. Because of to this risk, health professionals won’t prescribe GC stimulators, these kinds of as riociguat (Adempas), and Viagra together.

If you’ve had an allergic reaction. If you have had an allergic response to Viagra or any of its elements, your physician probable will not prescribe Viagra. You can talk to them about other remedies that might be improved options for you.

Just before you start off using Viagra, communicate with your doctor if any of the components earlier mentioned utilize to you. Your health care provider can determine irrespective of whether Viagra is harmless for you to choose.

It’s attainable for liquor to interact with Viagra. But it could depend on how a lot alcoholic beverages you consume.

Both equally Viagra and alcohol can decreased your blood tension. So it’s considered that having the two alongside one another could induce blood tension to fall to extremely lower concentrations.

If you consume alcohol, explain to your health care provider right before you start off using Viagra. They can explore with you how substantially alcohol, if any, is risk-free to drink while you are taking the drug.

Right before you start taking Viagra, notify your health care provider and pharmacist about any prescription, over-the-counter, or other medications you just take. Sharing this data with them may perhaps assistance avoid feasible treatment interactions.

If you have concerns about drug interactions that could have an impact on you, communicate with your physician or pharmacist.

The chart beneath lists medicine that might interact with Viagra. Continue to keep in thoughts that this chart does not contain all medicine that might interact with Viagra. For more information about some of these interactions, see the “Drug interactions explained” segment beneath.

* For more information about this conversation, see the “When to stay clear of Viagra” area above.

Study far more about specified drug interactions that can manifest with Viagra.

Interaction with alpha-blockers

Viagra may perhaps interact with alpha-blockers, as explained below. Alpha-blockers are utilized to treat superior blood stress, benign prostatic hyperplasia (enlarged prostate), and specific other situations.

Conversation with blood force medication

Viagra may perhaps interact with blood force medicines other than alpha-blockers (talked over just previously mentioned). These are explained below.

Conversation with other drugs for erectile dysfunction

Viagra can interact with other prescription drugs for erectile dysfunction (ED), as described under.

Viagra may perhaps have other interactions. They could come about with dietary supplements, food items, vaccines, or even lab tests. See below for information.

Does Viagra interact with dietary supplements?

Prior to you get started having Viagra, converse with your medical professional and pharmacist about any dietary supplements, herbs, and nutritional vitamins you acquire. Sharing this details with them may possibly aid you keep away from attainable interactions.

If you have concerns about interactions that may well influence you, communicate with your medical doctor or pharmacist.

Viagra interactions with herbs

The organic health supplement St. John’s wort can interact with Viagra. Getting St. John’s wort may perhaps make Viagra significantly less productive than common.

Because of to this chance, your doctor could regulate your Viagra dosage if you take this natural nutritional supplement. They may well also advise that you cease making use of St. John’s wort.

Viagra with nutritional vitamins

There are at present no reviews of Viagra interacting with vitamins. But this does not indicate that vitamin interactions will not be recognized in the long run.

For this cause, it is still crucial to check with your medical professional or pharmacist right before you begin having a vitamin through Viagra procedure. They can permit you know whether or not taking the vitamin with Viagra is secure.

Does Viagra interact with foods?

Viagra may perhaps interact with grapefruit, together with grapefruit juice. Grapefruit can increase stages of Viagra in your human body, which may improve your threat of aspect results.

It’s suggested that you keep away from consuming grapefruit and any grapefruit goods even though getting Viagra. But if you take in grapefruit consistently and want to continue on performing so, your doctor may perhaps lessen your dosage of Viagra.

Does Viagra interact with vaccines?

There aren’t recognized interactions among Viagra and vaccines.

Does Viagra interact with lab checks?

Viagra is not acknowledged to interact with any lab checks.

Does Viagra interact with cannabis or CBD?

Cannabis (cannabis) and cannabis products, these kinds of as cannabidiol (CBD), have been precisely documented to interact with Viagra. Tetrahydrocannabinol (THC), a part of hashish, may possibly raise Viagra ranges in your entire body. This could increase your chance of aspect consequences, this kind of as low blood tension.

In advance of you start cure with Viagra, convey to your medical professional and pharmacist if you acquire hashish. By sharing this facts with them, you may possibly enable avoid probable interactions.

Note: Cannabis is unlawful at a federal amount but is authorized in numerous states to various degrees.

Does Viagra interact with cannabis or CBD?

Cannabis (marijuana) and hashish items, such as cannabidiol (CBD), have been specially reported to interact with Viagra. Tetrahydrocannabinol (THC), a component of hashish, could improve Viagra ranges in your system. This could improve your danger of facet effects, such as lower blood strain.

Ahead of you get started procedure with Viagra, notify your physician and pharmacist if you consider hashish. By sharing this information with them, you may well assist prevent achievable interactions.

Be aware: Hashish is unlawful at a federal amount but is legal in several states to various levels.

Particular healthcare disorders or other overall health things may well enhance the threat of interactions with Viagra. Before getting Viagra, talk with your health care provider about your wellbeing history. They’ll figure out whether Viagra is suitable for you.

Well being situations or other factors that may interact with Viagra contain:

  • Coronary heart difficulties or heart surgical treatment in the previous 6 months. Ahead of taking Viagra, chat with your physician if you have coronary heart issues. This involves possessing high blood tension or getting had a heart attack. Also enable them know if you have had heart surgery in the past 6 months. Your health care provider can decide no matter if your coronary heart is nutritious enough for intercourse as well as using Viagra. They may well prescribe a reduce Viagra dose. If the risks of using the drug outweigh the positive aspects, they may not prescribe the drug to you.
  • Stroke. It may not be protected to use Viagra if you have experienced a stroke. Speak with your medical professional about irrespective of whether Viagra is risk-free for you to choose.
  • Blood cell troubles. Obtaining blood mobile problems, these kinds of as sickle cell anemia or leukemia, may enhance your risk of priapism. This is a exceptional but severe facet influence of Viagra. If you have blood cell difficulties, check with your doctor whether or not Viagra is safe for you to use.
  • Retinitis pigmentosa. In scarce circumstances, Viagra can bring about eye-associated aspect results. It is not recognized whether persons with retinitis pigmentosa are at increased chance of these facet outcomes. If you have this eye problem, convey to your medical professional. They can examine the rewards and threats of applying Viagra with you.
  • Bleeding problems. Owning bleeding challenges, this sort of as hemophilia, may enhance your danger of bleeding as a facet result of Viagra. If you have bleeding complications, request your physician whether or not Viagra is risk-free for you to use.
  • Peptic ulcer. Having a peptic ulcer may perhaps enhance your risk of bleeding as a side effect of Viagra. If you have this condition, inquire your medical doctor irrespective of whether Viagra is a secure therapy selection for you.
  • Liver problems. Viagra amounts can establish up in the physique of men and women with liver complications, escalating the threat of facet consequences. In advance of you get Viagra, notify your physician if you have a liver difficulty, these types of as alcohol-related liver condition. Your health care provider will possible prescribe a lower Viagra dose for you.
  • Severe kidney issues. Viagra concentrations can develop up in the physique of a person with a significant kidney problem, these kinds of as intense long-term kidney ailment. This can boost the threat of aspect consequences from the drug. If you have a critical kidney problem, your medical professional will most likely prescribe a reduced Viagra dose for you.
  • Irregular penis condition. Getting a condition that has an effect on the condition of your penis may well increase your possibility of priapism as a side result of Viagra. An case in point is Peyronie’s condition. Talk to your physician irrespective of whether Viagra is secure for you to acquire.
  • Pregnancy. Viagra is not intended for use in women.* It is unidentified regardless of whether Viagra is safe and sound to choose during being pregnant.
  • Breastfeeding. Viagra is not intended for use in girls. It is unfamiliar no matter whether Viagra is safe to take all through breastfeeding.
  • Allergic reaction. If you’ve experienced an allergic reaction to Viagra or any of its components, your medical professional will probable not prescribe Viagra. You can check with them about other remedies that may well be improved options for you.

* In this posting, we use the phrase “female” to refer to someone’s sex assigned at beginning. For data about the change concerning sexual intercourse and gender, see this short article.

Find answers to some regularly requested questions about Viagra and attainable interactions.

Does Viagra interact with statins, these kinds of as Lipitor?

No, Viagra is not acknowledged to interact with statins, which include atorvastatin (Lipitor).

Statin drugs these as Lipitor are usually approved to folks with coronary heart problems. Obtaining coronary heart problems at times can make it unsafe to just take Viagra. But Lipitor itself isn’t identified to interact with Viagra.

If you have heart complications, talk with your medical professional or pharmacist about no matter whether it is protected for you to acquire Viagra.

Is it harmless to just take Viagra and doxycycline collectively?

Sure, Viagra and doxycycline (Acticlate, Doryx) are imagined to be risk-free to just take together. There have been no stories of an conversation concerning these prescription drugs.

Doxycycline is a kind of antibiotic treatment. Viagra can interact with erythromycin (Ery-Tab), which is a further antibiotic. Viagra can also interact with specified antifungal medications, including ketoconazole and itraconazole (Sporanox, Tolsura). But doxycycline is not acknowledged to interact with Viagra.

Will modafinil interact with Viagra if I get them together?

No, modafinil (Provigil) really should not interact with Viagra if these remedies are taken together.

Modafinil is approved to deal with narcolepsy, rest apnea, and change get the job done snooze dysfunction. There have been no stories of an conversation in between Viagra and modafinil. If you have issues about Viagra, modafinil, and interactions, chat with your pharmacist or health care provider.

Getting specified measures can support you prevent interactions with Viagra. Ahead of commencing procedure, communicate with your physician and pharmacist. Matters to talk about with them incorporate:

  • No matter whether you drink liquor or use cannabis.
  • Other remedies you choose, as effectively as any vitamins, dietary supplements, and herbs. Your health care provider or pharmacist can assist you fill out a treatment record.
  • What to do if you start using a new drug for the duration of Viagra treatment.

It’s also vital to go through Viagra’s label and other paperwork that arrives with the drug. You might see coloured stickers on the label that describe interactions. And the paperwork (sometimes identified as the prescribing info) may well have other details about interactions. If you will need assist understanding this information and facts, talk with your physician or pharmacist.

Having Viagra particularly as approved can also support stop interactions.

If you nonetheless have inquiries about Viagra and its achievable interactions, discuss with your health practitioner.

Inquiries you may perhaps want to question your health practitioner include things like:

  • Will my Viagra dosage affect my danger of interactions?
  • Should really I stay clear of having Viagra at the very same time as my other remedies?
  • Do other medication that could deal with my issue have identical interactions as Viagra?

While using Viagra, do not begin using new prescription drugs or health supplements without first chatting with your health care provider or pharmacist. Some interactions with Viagra can be hazardous or even lifestyle threatening. Your pharmacist or doctor can check any new medications or supplements for interactions with Viagra.

Disclaimer: Healthline has made each exertion to make specified that all info is factually appropriate, detailed, and up to date. However, this post need to not be utilized as a substitute for the awareness and skills of a licensed health care qualified. You need to normally seek advice from your medical doctor or a different health care skilled in advance of using any medicine. The drug info contained herein is subject matter to modify and is not supposed to protect all possible works by using, directions, safety measures, warnings, drug interactions, allergic reactions, or adverse consequences. The absence of warnings or other data for a offered drug does not reveal that the drug or drug mix is safe, efficient, or acceptable for all patients or all distinct uses.