I Took 200 mg of Viagra: How Much Is Too Much?

I took 200 mg of Viagra: what to do now

Do not take any more sildenafil today. The Viagra (sildenafil) label sets the maximum recommended dose at 100 mg and the maximum dosing frequency at once per day, so 200 mg is twice the labeled maximum. The patient information says: “If you accidentally take too much VIAGRA, call your doctor or go to the nearest hospital emergency room right away.”

Sources: DailyMed Viagra (sildenafil) label (revised 12/2017) and Poison Help, HRSA; accessed Oct 21, 2026.

Do not take a nitrate. The Viagra (sildenafil) label contraindicates sildenafil with organic nitrates or nitrites “in any form” because it “was shown to potentiate the hypotensive effect of nitrates.” If you need emergency heart care, tell the team when you took sildenafil; the label says that timing is important. Read more in ED medication and nitrates.

Have the medicine container ready, and tell Poison Help what you took, when you took it and your health conditions; its service is free and confidential, 24/7.

What the label says about 200 mg and higher doses

The Viagra (sildenafil) label, section 10 (Overdosage), states exactly:

“In studies with healthy volunteers of single doses up to 800 mg, adverse reactions were similar to those seen at lower doses but incidence rates and severities were increased.”

Section 5.6 of the Viagra (sildenafil) label reports decreased blood pressure, syncope (fainting) and prolonged erection in some healthy volunteers exposed to 200–800 mg; those observations do not establish a safe dose above the recommended maximum.

How much sildenafil is too much? Label dosing at a glance

Any dose above 100 mg, or more than one dose in a day, is above what the Viagra (sildenafil) label recommends. For some people the ceiling is lower; the label sets a 25 mg starting dose or cap for specific medicines and health conditions.

Source: DailyMed VIAGRA (sildenafil citrate) label, sections as listed; accessed Oct 21, 2026. Follow your own prescription; the maximum is not a target.

Do side effects rise with the dose?

Several do in the label’s fixed-dose trials. The Viagra (sildenafil) label also states: “At doses above the recommended dose range, adverse reactions were similar to those detailed in Table 1 below but generally were reported more frequently.”

Source: DailyMed VIAGRA (sildenafil citrate) label, section 6.1, Table 1; accessed Oct 21, 2026. Selected rows; percentages exactly as listed. This fixed-dose table has no 200 mg column; do not extrapolate its percentages to that dose.

The Viagra (sildenafil) label describes the abnormal vision in these trials as “mild to moderate in severity and transient, predominantly color tinge to vision, but also increased sensitivity to light, or blurred vision.” Sudden vision loss is different: stop and get care.

Can you take 2 Viagra tablets? Check the strength

Tablet count alone does not tell you the dose: two 50 mg tablets total 100 mg, while two 100 mg tablets total 200 mg, above the maximum in the Viagra (sildenafil) label; take only the dose your prescriber set.

A second dose later the same day exceeds the once-per-day limit in the Viagra (sildenafil) label, even if the first dose did not help.

Do not add another ED medicine yourself: the Viagra (sildenafil) label, section 5.7, says combinations with other PDE5 inhibitors or ED treatments have not been studied and are not recommended because they may further lower blood pressure.

If 100 mg isn’t working, talk to a provider instead of taking more

A higher dose is not the next step on your own. The Viagra (sildenafil) label sets 100 mg as the maximum recommended dose and notes that adverse reactions were generally reported more often above that range. A prescriber can review timing, food, your other medicines and your health, and discuss other options.

• Troubleshooting first: why ED pills may not work.
• A different molecule: sildenafil vs tadalafil.
• Questions for your visit: daily tadalafil.
• Timing questions: how long Viagra lasts.

For the linked comparison topics, see the Cialis (tadalafil) label.

What each path includes

If you have already taken too much

Use the urgent steps above and Poison Help for immediate guidance; the Viagra (sildenafil) label directs patients to call their doctor or go to the nearest emergency room right away after an accidental overdose.

If your current prescription is not helping

Bring your medicine list, prescribed dose, timing and results to your prescriber; follow the Viagra (sildenafil) label rather than increasing the dose yourself.

If you want to explore Mendoxa care

An online visit starts with your treatment history for independent provider review. Prescription required. Independent licensed providers decide whether treatment is appropriate; a prescription is not automatic.

Mendoxa offers a compounded rapid-dissolve tablet containing sildenafil, tadalafil and apomorphine; it is not FDA-approved. The ingredient labels—Viagra (sildenafil) label, Cialis (tadalafil) and APOKYN (apomorphine)—do not constitute approval of this combination.

Ask about suitability through Mendoxa ED care, learn about the combination ED tablet, or return to Mendoxa home.

Mendoxa ED plans and prices

The Mendoxa ED tablet is a compounded rapid-dissolve tablet with sildenafil (the active ingredient in Viagra), tadalafil (the active ingredient in Cialis) and apomorphine (APOKYN label). It dissolves under the tongue. A licensed clinician decides if it fits you and selects the strength. Compounded medicines are not FDA-approved.

The 3-month total covers three months at the monthly tablet quantity shown.

If prescribed · Cancel anytime · Available in 49 states (not California). Prices from the Mendoxa intake at try.mendoxa.co/f/ed on Oct 21, 2026. The intake always shows the current price.

FAQ

What happens if you take 200 mg of Viagra?

200 mg is twice the labeled maximum; the Viagra (sildenafil) label reports lower blood pressure, fainting and prolonged erection in some volunteers exposed to 200–800 mg. Call your doctor or Poison Help (1-800-222-1222) now, even if you feel well.

How often can you take Viagra?

Once per day at most. The Viagra (sildenafil) label lists a maximum recommended dosing frequency of once per day, and the patient information says: “Do not take VIAGRA more than 1 time a day.” With ritonavir, the label caps sildenafil at 25 mg within 48 hours.

Can I take two 50 mg Viagra tablets instead of one 100 mg?

Two 50 mg tablets total 100 mg, the maximum recommended dose in the Viagra (sildenafil) label; use that amount only if it is your prescribed dose. Two 100 mg tablets total 200 mg and exceed the label maximum.

What is the maximum dose of sildenafil for ED?

100 mg, no more than once per day. The Viagra (sildenafil) label gives a usual dose of 50 mg and a range of 25–100 mg; it suggests a 25 mg start with alpha-blockers, strong CYP3A4 inhibitors, age over 65, hepatic impairment or severe renal impairment.

When should I go to the ER after taking too much Viagra?

The Viagra (sildenafil) label says to call your doctor or go to the nearest emergency room right away after accidentally taking too much. Seek emergency care for chest pain, an erection lasting more than 4 hours, or sudden vision or hearing loss; Poison Help at 1-800-222-1222 also provides immediate guidance.

Does a higher dose of Viagra work better?

The Viagra (sildenafil) label does not recommend doses above 100 mg and reports more frequent adverse reactions above its recommended range. If your prescription is not helping, use your next visit to discuss ED pills not working instead of increasing it yourself.

References

1. DailyMed: VIAGRA (sildenafil citrate) tablet, film coated, label revised 12/2017. Accessed Oct 21, 2026.
2. DailyMed: CIALIS (tadalafil) tablet, film coated, label revised 3/2026. Accessed Oct 21, 2026.
3. DailyMed: APOKYN (apomorphine hydrochloride) injection, label revised 6/2022. Accessed Oct 21, 2026.
4. FDA (Drugs@FDA): VIAGRA (sildenafil) prescribing information, NDA 020895. Accessed Oct 21, 2026.
5. FDA (Drugs@FDA): CIALIS (tadalafil) prescribing information, NDA 021368. Accessed Oct 21, 2026.
6. FDA: Compounding and the FDA, questions and answers. Accessed Oct 21, 2026.
7. HRSA Poison Help: Calling Poison Help (1-800-222-1222). Accessed Oct 21, 2026.
8. HRSA Poison Help: First steps in a poisoning emergency. Accessed Oct 21, 2026.
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9. Mendoxa ED care (product, format, max 1 dose per 24 hours). Accessed Oct 21, 2026.
10. Mendoxa ED intake: plan prices (term_options). Accessed Oct 21, 2026.

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Explore Mendoxa ED care

Compounded medication prescribed only if a licensed U.S. clinician decides it is appropriate. Not FDA-approved as a finished product. Not available in California. This site is not for emergencies. Call 911 if you need urgent care.