Ritonavir is a pill that fights HIV. It belongs to a class called protease inhibitors, which stop the virus from making new copies of itself. Most people don’t use it alone; doctors combine it with other HIV drugs to keep the virus under control.
Doctors like ritonavir because it boosts the effect of other HIV medicines. When taken together, it raises the level of the partner drug in your blood, so you need a lower dose and get better viral suppression. It also has a long track record, so doctors know how it behaves, what to expect, and how to manage it.
If you’re newly diagnosed, your clinician will likely put you on a regimen that includes ritonavir. If you’re already on treatment, a switch to a ritonavir‑boosted plan might happen if your virus becomes resistant to other drugs.
Take ritonavir exactly as your doctor tells you. Usually it’s a 100 mg tablet taken once or twice a day with food. Swallow the tablet whole; don’t crush or chew it because that can change how much of the drug gets absorbed.
Stay consistent with the timing. Missing a dose can let the virus bounce back, and extra doses won’t make it work faster. If you forget, take it as soon as you remember, unless it’s almost time for your next dose – then skip the missed one and continue as normal.
Ritonavir can upset your stomach. Taking it with a meal, a snack, or a glass of milk often eases nausea. If you get persistent diarrhea or vomiting, call your doctor – they may adjust the dose or add medicine to calm your gut.
Check for drug interactions. Ritonavir blocks an enzyme called CYP3A4, which processes many other meds. That means it can raise the level of some drugs (like certain cholesterol pills or anti‑seizure medicines) and lower others (like some steroids). Always show your pharmacist every medication you take, including over‑the‑counter products and herbal supplements.
Blood tests are part of routine monitoring. Your doctor will check liver enzymes, cholesterol, and viral load every few months. If the liver numbers climb too high, your clinician might pause ritonavir or switch you to a different booster.
Pregnancy and breastfeeding need special attention. Ritonavir crosses the placenta and appears in breast milk, but many women still stay on it because the benefits of controlling HIV outweigh the risks. Your doctor will discuss the safest plan for you and your baby.
When you travel, pack extra pills and keep them in their original containers. Some countries have strict rules about importing HIV medication, so check local regulations before you go.
Finally, never share your ritonavir tablets with anyone, even if they say they have the same condition. Dosage is personalized, and sharing can lead to resistance or harmful side effects.
Ritonavir is a powerful tool in the fight against HIV, but it works best when you follow the dosing schedule, watch for interactions, and keep up with regular check‑ups. Got questions? Ask your healthcare provider – they’re the best source for advice that fits your situation.
Discover how boosting protease inhibitors with ritonavir has transformed HIV treatment, making medicines work longer and better. Explore the science behind drug boosting, the impact on viral suppression, and practical tips for real-world use. Get the facts backed by research, stories from clinics, and clear breakdowns for anyone curious about this strategic HIV therapy approach.