Buy Tivicay
Tivicay

3.22
A potent antiviral medication used in combination with other medicines to treat HIV infection in adults and children.


Ingredient
Availability
In Stock
Delivery
Airmail (14-21 days) | EMS trackable (5-9 days)
Product is shipped in a fully discreet envelope with no content disclosure, including all required documentation inside

Product Sheet

Alternative/Local Brand
Tivicay
Active Ingredient(s)
Dolutegravir
Primary Category
HIV Treatment
Therapeutic Class
Antivirals for systemic use, Integrase inhibitors
Pharmacological Class
HIV integrase strand transfer inhibitor
Indications
HIV-1 infection
Contraindications
Concomitant use with dofetilide, Hypersensitivity to dolutegravir
Minor Side Effects
Trouble sleeping, Headache, Tiredness
Moderate Side Effects
Nausea, Diarrhoea, Dizziness, Strange dreams
Serious Side Effects
Liver problems, Severe skin rash, Hypersensitivity reactions, Immune reconstitution inflammatory syndrome
Dosage Forms
Tablet, Dispersible tablet
Administration Route
Oral
Mechanism of Action
It works by blocking integrase, an HIV enzyme that the virus needs to insert its DNA into the DNA of the host's immune cells. By preventing this integration, the drug stops the virus from replicating and reduces the amount of HIV in the blood.
Prescription Status
Rx
Manufacturer
ViiV Healthcare
Patient Summary
A potent antiviral medication used in combination with other medicines to treat HIV infection in adults and children.
Onset Time
Rapid reduction in viral load within weeks
Duration
24 hours
Storage Instructions
Store in the original container to protect from moisture.
Drug Interactions
Antacids, Metformin, Rifampicin, St. John's Wort, Calcium/Iron supplements
Age Restrictions
Effective in adults and children weighing at least 3kg
Pregnancy Use
Specialist consultation required; generally safe but requires monitoring.
Alternative Drugs
Isentress, Biktarvy

What is Tivicay?

Tivicay is a brand-name medication that contains dolutegravir as its active ingredient. It belongs to the therapeutic class of HIV management drugs and is available in a 50 mg tablet form. In Hong Kong, Tivicay is a prescription-only product approved for the treatment of HIV-1 infection. The medication is manufactured by ViiV Healthcare and marketed under the Tivicay name worldwide.

How Tivicay Works in the Body

Dolutegravir is an integrase strand transfer inhibitor (INSTI). It blocks the HIV-1 integrase enzyme, which is required for the virus to insert its genetic material into the host cell’s DNA. By preventing this step, dolutegravir stops the replication cycle of HIV, leading to reduced viral load and preservation of the immune system.

Key pharmacologic points:

  • Target: HIV-1 integrase enzyme.
  • Onset: Antiviral activity begins within hours of the first dose.
  • Peak plasma concentration: Reached approximately 2-3 hours after oral administration.
  • Half-life: About 14 hours, supporting once-daily dosing.
  • Metabolism: Primarily via UGT1A1 glucuronidation; minimal CYP3A4 involvement, which reduces many drug-interaction risks.

Conditions Treated with Tivicay

Tivicay is approved in Hong Kong (and internationally) for the following indications:

  • Treatment-naïve adults living with HIV-1 infection, in combination with two nucleoside reverse transcriptase inhibitors (NRTIs).
  • Treatment-experienced adults who have not previously received an integrase inhibitor, together with an optimized background regimen.

The medication may be used as part of a single-tablet regimen (e.g., with abacavir/lamivudine) or as a separate component of a combination therapy, depending on the prescriber’s plan.

Off-Label and Investigational Applications

  • HIV post-exposure prophylaxis (PEP): Some clinical guidelines discuss dolutegravir as a component of PEF (post-exposure) regimens, but it is not formally approved for this use in Hong Kong.
  • Pre-exposure prophylaxis (PrEP): Research is ongoing; dolutegravir is not approved for PrEP.

Disclaimer: Off-label use requires medical supervision, thorough risk assessment, and adherence to local clinical guidelines.

Who Should (Not) Use Tivicay?

Ideal Candidates

  • Adults (≥ 18 years) with confirmed HIV-1 infection.
  • Individuals whose viral load is detectable and who require a potent, once-daily regimen.

Absolute Contraindications

  • Known hypersensitivity to dolutegravir or any tablet excipient.
  • Concurrent use of drugs that strongly induce UGT1A1 (e.g., rifampicin) without appropriate dose adjustment.

Relative Contraindications & Precautions

  • Pregnancy: Dolutegravir is generally considered safe, but current guidance recommends a twice-daily 50 mg dose when combined with certain other agents (e.g., efavirenz).
  • Renal impairment: No dosage change is needed for mild-to-moderate impairment, but severe renal dysfunction warrants clinical judgment.
  • Hepatic impairment: Use with caution in patients with severe liver disease; monitor liver function.

Special Populations

  • Breastfeeding: Dolutegravir is excreted in breast milk; benefits and risks should be evaluated by the healthcare provider.
  • Elderly: No specific dose change, but comorbidities and polypharmacy increase interaction risk.

Safety Profile: Side Effects and Interactions

Common Side Effects

  • Insomnia - reported frequently; may improve with dose timing adjustment.
  • Headache - usually mild and transient.
  • Nausea - often resolves after the first few days of therapy.
  • Fatigue - reported by some patients during the initial treatment period.

Serious Adverse Events

  • Severe allergic reactions (e.g., rash, angioedema) - require immediate medical attention.
  • Hepatotoxicity - rare, but liver enzyme monitoring is advised in patients with pre-existing liver disease.
  • Neuropsychiatric effects - rare cases of depression or mood changes have been noted; patients should report new symptoms promptly.

Drug Interactions

  • Major interactions:
  • Rifampicin - induces UGT1A1, reducing dolutegravir levels; dosage increase to 50 mg twice daily is recommended if co-administered.
  • Moderate interactions:
  • Metformin - dolutegravir may increase metformin plasma concentrations; monitor for lactic acidosis signs.
  • Antacids containing polyvalent cations (e.g., aluminum, magnesium) - may reduce dolutegravir absorption; separate administration by at least 2 hours.

Food and Lifestyle Interactions

  • Tivicay can be taken with or without food.
  • No specific alcohol restriction, but excessive alcohol may impair immune function.
  • No driving restrictions are listed, but patients experiencing dizziness should exercise caution.

How to Take Tivicay

  • Standard dosing: One 50 mg tablet taken once daily, at the same time each day.
  • Administration: Swallow the tablet whole with water; it may be taken with or without food.
  • Missed dose: Take the missed dose as soon as remembered on the same day; do not double the next dose.
  • Dose adjustments:
  • When co-administered with strong UGT1A1 inducers (e.g., rifampicin), the dose may be increased to 50 mg twice daily under medical supervision.
  • During pregnancy, some guidelines recommend a twice-daily regimen; follow the prescriber’s recommendation.

Overdose

  • Symptoms may include nausea, vomiting, and dizziness.
  • Seek emergency medical care; supportive measures are the mainstay of treatment.

Discontinuation

  • Abrupt cessation can lead to viral rebound and resistance.
  • If therapy must be stopped, a gradual transition to an alternative antiretroviral regimen is advised by a clinician.

Monitoring and Follow-Up

  • Baseline labs: HIV viral load, CD4 count, liver function tests, renal function, and pregnancy testing (if applicable).
  • Follow-up: Viral load typically assessed at 4-8 weeks after initiation, then every 3-6 months.
  • Adverse-event monitoring: Periodic evaluation for neuropsychiatric symptoms, liver enzymes, and renal function in at-risk patients.

Storage and Handling

  • Store tablets at room temperature (15-30 °C), protected from moisture and direct sunlight.
  • Keep the container tightly closed and out of reach of children.
  • Do not use the medication after the expiration date indicated on the packaging.

Medication-Specific Glossary

Integrase Inhibitor
A class of antiretroviral drugs that block the HIV integrase enzyme, preventing viral DNA integration into host cells.
Viral Load
The quantity of HIV RNA copies per milliliter of blood; a key marker of treatment effectiveness.
Therapeutic Window
The plasma concentration range in which dolutegravir is both effective against HIV and unlikely to cause toxicity.
Steady-State Concentration
The consistent level of drug in the bloodstream achieved after repeated dosing, typically reached after ~5 half-lives.

Medical Disclaimer

This article provides educational information about Tivicay and is not a substitute for professional medical advice. Treatment decisions, including use for unapproved indications, must be made under the guidance of a qualified healthcare provider. The content is intended for informational purposes and does not constitute medical recommendations. Always consult a physician before starting, stopping, or changing any medication regimen.

Tivicay FAQ

Can Tivicay be taken with other antiretroviral drugs?

Yes. Tivicay is commonly combined with two nucleoside reverse transcriptase inhibitors (NRTIs) as part of a recommended triple-therapy regimen. Compatibility depends on the specific NRTIs and any co-existing medications; the prescribing clinician will select a suitable combination.

What should I do if I experience insomnia after starting Tivicay?

Insomnia is a reported side effect that often improves with time. Patients can try taking the tablet earlier in the day or discuss sleep-aid options with their healthcare provider if the problem persists.

Is a dose adjustment needed for patients with severe kidney disease?

Dolutegravir does not require dose modification for mild-to-moderate renal impairment. In severe renal dysfunction, clinical judgment is required, and the prescriber may monitor drug levels or consider alternative regimens.

Can I store Tivicay in a bathroom cabinet?

While a bathroom cabinet is convenient, it may experience higher humidity. It is best to keep the tablets in a cool, dry place at room temperature, such as a drawer or pantry, away from moisture.

How does Tivicay compare to other integrase inhibitors like elvitegravir?

Both are potent integrase inhibitors, but dolutegravir has a longer half-life, allowing once-daily dosing without a boosting agent. Elvitegravir often requires co-administration with a pharmacokinetic booster (cobicistat).

Are there any special considerations for traveling with Tivicay?

Carry the medication in its original packaging with a copy of the prescription. Keep it in hand luggage to avoid temperature extremes and ensure you have enough tablets for the entire trip plus a few extra days.

What is the impact of antacids on Tivicay absorption?

Antacids containing aluminum, magnesium, or calcium can lower dolutegravir absorption. To minimize this effect, take Tivicay at least 2 hours before or after the antacid.

Does Tivicay affect birth control effectiveness?

Dolutegravir does not diminish the efficacy of hormonal contraceptives. However, patients should discuss all contraceptive options with their provider, especially when other interacting drugs are present.

Can I switch from another INSTI to Tivicay without a washout period?

Transitioning between integrase inhibitors generally does not require a washout period, but the switch should be overseen by a clinician to ensure continuous viral suppression.

Is dolutegravir detected in standard drug-testing panels for athletes?

Dolutegravir is not a prohibited substance in most athletic doping programs and is not typically screened for in routine drug tests. Athletes should still disclose all medications to anti-doping authorities.

Categories