Supplement stacks / Caffeine + Tadalafil

Can You Take Caffeine with Tadalafil?

Caffeine and Tadalafil: one interaction flagged, scored 6/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.

Safety at a glance

Medium risk
Safety score6/10

This score comes from an AI-written analysis of the pair. Our interaction rules check it and can only make it stricter, never milder. Informational only: it can't account for your medications, conditions, or genetics.

What the AI-written analysis says

Caffeine and Tadalafil can be taken together, but caution is advised due to potential cardiovascular effects and individual health conditions. Monitoring is recommended.

Tadalafil is a prescription medication. This page describes publicly documented interactions — it can't see your dose, your other prescriptions, or your labs. Discuss any supplement with the prescriber or pharmacist who manages this medication before combining.

Known interactions

Caffeine × Tadalafilmedium risk

Caffeine may increase heart rate and blood pressure, which can counteract the vasodilatory effects of Tadalafil; monitor cardiovascular response.

Caffeine

From the AI-written analysis.

Generally safe in moderate amounts, but can exacerbate anxiety and heart conditions.

Typical dosage: 50-200 mg daily

Common side effects:
  • Insomnia
  • Nervousness
  • Increased heart rate
Warnings:
  • Avoid excessive intake if you have heart conditions
  • May worsen anxiety disorders

Tadalafil

From the AI-written analysis.

Generally well-tolerated, but contraindicated in certain cardiovascular conditions.

Typical dosage: As prescribed or as directed on the label

Common side effects:
  • Headache
  • Dyspepsia
  • Back pain
Warnings:
  • Consult healthcare provider if you have heart conditions
  • Avoid combining with nitrates

Timing

No timing arrangement makes this combination safe — see the warnings above.

Frequently asked questions

Can you take Caffeine and Tadalafil together?

Caffeine and Tadalafil: one interaction flagged, scored 6/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.

What score does the Caffeine and Tadalafil combination get?

The Caffeine and Tadalafil combination is scored 6/10 (medium risk). The score comes from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice. Always confirm with a healthcare professional.

When should you take Caffeine and Tadalafil?

No timing arrangement makes this combination safe — see the warnings above.

Check your full list

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What your DNA adds

Some genes in a raw 23andMe or AncestryDNA file are linked to how the body handles nutrients. The DNA report says what yours are linked to and, where there is one, which blood test would tell you more.

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Related combinations

Not medical advice

This analysis is based on general supplement information. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult qualified healthcare providers before starting any supplement regimen.

AI-written analysis generated September 2, 2026, checked by our interaction rules · How our analysis works