nirmatrelvir/ritonavir vs suvorexant
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Side-by-side comparison of nirmatrelvir/ritonavir and suvorexant. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
moderate Known Drug Interaction
Neuropsychiatric agents suvorexant ↑ suvorexant Avoid concomitant use of suvorexant with PAXLOVID.
Paxlovid
Belsomra
Paxlovid is a medicine used to treat mild to moderate COVID-19 in adults. It helps prevent severe illness, hospitalization, or death in people at high risk.
Belsomra is a prescription medicine used to treat insomnia. It helps you fall asleep and stay asleep.
Paxlovid treats mild to moderate COVID-19 in adults. You must be at high risk of your illness becoming severe. This includes needing to go to the hospital or possibly dying from COVID-19. Paxlovid is not for preventing COVID-19 before or after exposure.
Belsomra is used to treat insomnia in adults. Insomnia means you have trouble falling asleep, staying asleep, or both. This medicine can help you sleep better.
Paxlovid contains two medicines, nirmatrelvir and ritonavir. Nirmatrelvir stops the virus from multiplying in your body. Ritonavir helps nirmatrelvir stay in your body longer so it can work better.
Belsomra works by blocking orexin, a chemical in your brain that keeps you awake. By blocking orexin, Belsomra helps to reduce wakefulness and allows you to fall asleep.
- • Change in taste
- • Diarrhea
- • Sleepiness
- COVID-19 22,774
- COVID-19 coming back 20,089
- Change in taste 7,316
- Diarrhea 4,003
- Feeling sick to your stomach 2,620
- Nightmare 736
- Somnolence 726
- Insomnia 674
- Abnormal Dreams 599
- Headache 535
Paxlovid can interact with many other medicines, causing serious or life-threatening problems. Before taking Paxlovid, tell your doctor about all the medicines you take. Your doctor may need to adjust the dose of your other medicines or monitor you more closely.
Belsomra can cause you to feel sleepy during the day and can impair your ability to drive. Do not drive or do other activities that require you to be fully alert, especially if you take the 20 mg dose. Belsomra may also worsen depression or cause suicidal thoughts. Tell your doctor right away if you have any new or worsening mood changes. Complex sleep behaviors like sleepwalking have also been reported. Stop taking Belsomra and tell your doctor if this happens.
There is not enough information about nirmatrelvir's safety during pregnancy. Studies on ritonavir in pregnant women have not shown an increased risk of birth defects. Talk to your doctor about the risks and benefits of taking Paxlovid if you are pregnant or breastfeeding.
It is not known if Belsomra can harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if Belsomra passes into breast milk. Talk to your doctor about the best way to feed your baby if you take Belsomra.
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How to Read This nirmatrelvir/ritonavir vs suvorexant Comparison
nirmatrelvir/ritonavir is classified in the Antiviral (Protease Inhibitor Combination) drug class, while suvorexant sits within the Orexin Receptor Antagonist class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, nirmatrelvir/ritonavir has 56,802 submissions while suvorexant has 3,270. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known moderate interaction flagged in FDA labeling, attributed to ritonavir slows down how quickly your body clears suvorexant, which can make the effects of the sleep medicine much stronger.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for nirmatrelvir/ritonavir or suvorexant.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.