Nucleoside antiviral prodrug
Valacyclovir for athletes: anti-doping and performance
Athletes in regulated competitive sport face an additional layer of medication review beyond clinical considerations: whether Valacyclovir (Valacyclovir) is permitted under anti-doping rules, requires a Therapeutic Use Exemption, or is on the prohibited list at 500mg, 1000mg. The active ingredient Valacyclovir determines the answer; brand or generic version is irrelevant to anti-doping classification.
Anti-doping status of Valacyclovir
The WADA Prohibited List and equivalent national lists are updated annually. Valacyclovir may be permitted at all times, prohibited in-competition only, prohibited at all times, or require a TUE depending on the agent and the sport. Some otherwise-routine medications are restricted at competition because of their pharmacological effects on cardiovascular, neuromuscular or hormonal systems. Valacyclovir is rapidly and almost completely converted to acyclovir during first-pass intestinal and hepatic metabolism by valacyclovir hydrolase.
TUE and practical guidance
According to anti-doping authorities, an athlete who needs a prohibited or restricted medication for a legitimate medical reason can apply for a Therapeutic Use Exemption before using it. The application requires medical documentation and may need to be approved before competition. Athletes should always check the most recent WADA list and their sport's federation rules before starting Valacyclovir at 500mg, 1000mg.
Frequently asked questions
Is Valacyclovir banned in sport? ▾
Whether Valacyclovir is banned depends on Valacyclovir and the most recent WADA Prohibited List. Some agents are permitted, some restricted in-competition, some prohibited at all times. Always check the current list and TUE requirements before competition.
Will Valacyclovir affect my performance? ▾
Performance effects depend on the medication and the sport. Some medications can mildly impair physical or cognitive performance through their side effects; others are essentially neutral at 500mg, 1000mg. Athletes should expect to experiment with timing relative to training in the first weeks.
Products containing Valacyclovir
More on Valacyclovir
- With alcoholValacyclovir and alcohol — is it safe to drink?
- With foodShould Valacyclovir be taken with food?
- Side effectsValacyclovir side effects: common, rare and warning signs
- Dosage guideValacyclovir dosage guide: how much to take and when
- OnsetHow fast does Valacyclovir start working?
- DurationHow long does Valacyclovir last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.