Supplements and herpes
Do Supplements Help Herpes? Lysine, Zinc and Vitamin C Studied
Do supplements help herpes? No cited study shows it. A Cochrane review found no evidence that lysine prevents cold sores, and the one zinc trial in herpes tested a cream in 46 people, not a capsule. Prescription antivirals are the proven care. Reviralis lists no lysine and has no herpes study.
Written by the Reviralis label deskUpdated
The short version01
Do supplements help herpes?
No cited research shows that a dietary supplement treats or prevents herpes. The small studies that exist are mixed, old or about a cream instead of a capsule.
This matters because of how the law works. FDA says a supplement presented for the treatment, prevention or cure of a disease is a drug (FDA, Questions and Answers on Dietary Supplements). The FTC adds that a disease claim can be implied without naming the disease (FTC, Health Products Compliance Guidance). Regulators have also warned about products sold online for sexually transmitted infections (HIV.gov, FDA and FTC Act on Fraudulent HIV and STD Products).
The table below puts the four most common supplements side by side.
| Supplement | What was studied | Result | On the Reviralis label? |
|---|---|---|---|
| Lysine | Cochrane review; dose review | No evidence it prevents cold sores | No |
| Zinc | Cream, 46 people | 5.0 vs 6.5 days to heal | Yes, 10 mg |
| Vitamin C | Colds, general population | No significant cut in colds | Yes, 125 mg |
| Echinacea | Colds | May slightly lower cold risk | No |
Lysine02
Does lysine work for cold sores?
Not on the evidence we found. A Cochrane review concluded there was no evidence of efficacy for lysine in preventing cold sores (Chi 2015, Cochrane: Preventing Cold Sores).
A separate review looked at dose. It reported that doses under 1 gram a day were ineffective, and that above 3 grams a day lysine only improved the subjective experience of an outbreak (Mailoo and Rampes 2017, Lysine Review (Integr Med)). In plain words, the benefit is unproven and the doses that were tried were large.
Reviralis lists no lysine. We mention it only because it is the supplement people ask about most, and because lysine posts often turn up beside ads for products like this one.
Zinc03
Does zinc help cold sores?
A zinc cream shortened healing in one small trial. A zinc capsule has no herpes trial that we found.
The trial enrolled 46 people and compared a zinc cream with a placebo. Sores healed in 5.0 days with zinc and 6.5 days without (Godfrey 2001, Topical Zinc Oxide/Glycine for Cold Sores (Altern Ther Health Med)). That is a cream applied to the sore, so it says little about swallowing zinc.
The NIH Office of Dietary Supplements does not link oral zinc to herpes. It says zinc taken by mouth for colds may shorten symptoms by about two days (NIH ODS, Zinc). Reviralis supplies 10 mg of zinc per two capsules, which is 91% of the Daily Value. The adult upper limit is 40 mg a day (NIH ODS, Zinc), so the label amount is about a quarter of it.
Vitamin C and echinacea04
Do vitamin C or echinacea help herpes?
No herpes evidence exists for either in the sources we cite. Both were studied for colds.
The NIH says regular vitamin C intake did not significantly cut colds in the general population (NIH ODS, Vitamin C). NCCIH says echinacea may slightly lower the risk of catching a cold, and it is not a herpes source (NCCIH, Echinacea). Echinacea is not on the Reviralis label.
A cold and a herpes outbreak are different infections. Evidence for one does not carry over to the other.
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See packsReviralis05
Does Reviralis help herpes outbreaks?
No source shows it does. Reviralis Complete is a supplement of 22 vitamin and mineral lines and a 661 mg blend of 18 names, and no study has tested it.
The sales page says users "report a reduction in the frequency and severity of flare-ups". We cannot verify that line, and the FTC notes that a testimonial does not make a claim true (FTC, Health Products Compliance Guidance). Since repeat outbreaks often become milder and less frequent by themselves (CDC, About Genital Herpes), a report of improvement is not proof of a cause.
- “Precision Support For The Life You Want Back”No evidenceA slogan, not a finding. The label states no purpose, and no cited source tested this product. (FDA, Questions and Answers on Dietary Supplements) (FTC, Health Products Compliance Guidance)
- “Addresses the internal signal before it becomes visible”No evidenceNo source we found describes an internal signal that a supplement can address, and no source shows that a supplement prevents outbreaks. Prescription antivirals are the care the CDC describes. (CDC, About Genital Herpes) (CDC, STI Treatment Guidelines: Herpes)
- “quiet the internal signal your body sends before an outbreak”No evidenceAntivirals taken by a clinician's plan are what the CDC describes for outbreaks. No cited trial tested a capsule for this. (CDC, About Genital Herpes) (CDC, STI Treatment Guidelines: Herpes) (Chi 2015, Cochrane: Preventing Cold Sores)
- “Supports a calm stress response”Weak linkStress and recurrence are linked only weakly across 11 studies. No trial of a stress-reducing supplement is cited. Bacopa's ceiling on this label is 132.2 mg against 300 mg in a trial that measured attention. (Chida and Mao 2009, Stress and HSV Recurrence (Brain Behav Immun)) (Calabrese 2008, Bacopa in Older Adults (J Altern Complement Med))
- “Reinforces your body's natural defenses”No evidenceThe label lists vitamin C, zinc and selenium as nutrients with label percentages. Vitamin C did not significantly cut colds in the general population. (NIH ODS, Zinc) (NIH ODS, Vitamin C)
- “Most users report a reduction in the frequency and severity of flare-ups within the first month”Not verifiedNo trial or review is cited behind this line, and we found no verified reviews. Repeat outbreaks often become less frequent over time by themselves. (CDC, About Genital Herpes) (FTC, Final Rule Banning Fake Reviews (Aug 2024))
- “41-in-1 formula”Does not matchThe label prints 22 vitamin and mineral lines plus 18 blend names, which is 40. The sales page's own list has 36. (21 CFR 101.36, Supplement Facts Panel)
- “Trusted by thousands of outbreak-conscious customers”Not verifiedWe cannot verify any customer count, and we do not publish sample reviews or numbers. (FTC, Endorsement Guides: What People Are Asking) (FTC, Final Rule Banning Fake Reviews (Aug 2024))
- “Non-GMO, stimulant-free, and 100% natural”Partly checkableThe label does not print these words. Green tea extract contains caffeine, and the capsule shell is cellulose; "natural" is not a defined safety term. (NCCIH, Green Tea) (FDA, Questions and Answers on Dietary Supplements)
Claims as printed on the sales page (Reviralis sales page); the label makes none of them. Health claims need competent and reliable scientific evidence, generally randomized human trials (FTC, Health Products Compliance Guidance).
Lab findings06
What about lab studies that show an ingredient fights a virus?
Lab results are a first step, not a finding about people. This site does not cite any, and we make no antiviral claim for any label name.
A compound can act on cells in a dish and do nothing useful in the body. Olive leaf is an example: its infection effects are laboratory-only, according to the sources we read (MSK About Herbs, Olive Leaf). Grapefruit seed extract has a history of product mix-ups, with some liquids found to contain synthetic preservatives (Avula 2007, Synthetic Disinfectants in Grapefruit Seed Extract (Pharmazie)).
When a page leans on test-tube results to suggest an effect in people, treat it with caution.
What to do07
What should you do instead?
See a clinician about outbreaks, and keep any prescribed antiviral. A supplement is an optional extra at most.
Ask about antivirals
Acyclovir, valacyclovir and famciclovir are the proven care (CDC, STI Treatment Guidelines: Herpes). See antivirals and clinician care.
Tell them your supplements
List every product you take so interactions are caught. See supplements and medicines.
Know the red flags
Eye pain, fever with a stiff neck, or sores in pregnancy need prompt care.
- Painful sores near the eyesHerpes in or near the eye can harm sight. Get care the same day.
- A first outbreak, or sores you are unsure aboutA clinician can confirm what it is and talk about antivirals and partner safety.
- Sores that do not heal in 2 to 3 weeksOr frequent outbreaks. Ask about daily suppression.
- A weakened immune systemOutbreaks can be longer or more severe. Tell your clinician about any outbreak.
- Fever, stiff neck, severe headache or confusionCall 911 or go to an emergency room.
- Pregnant, or a new baby with sores or feverCall a clinician or emergency care right away.
From the CDC and Mayo Clinic (CDC, About Genital Herpes) (CDC, STI Treatment Guidelines: Herpes) (Mayo Clinic, Cold Sore Symptoms and Causes). This list is not complete, and a supplement is never a reason to wait.
FAQ08
Supplements and herpes: common questions
Is there any supplement that gets rid of herpes?
No. Herpes has no cure, and no cited study shows that any supplement removes the virus or ends outbreaks. Prescription antivirals are the proven care. Be wary of any product that promises a cure.
Is lysine good for cold sores?
The evidence is poor. A Cochrane review found no evidence that lysine prevents cold sores. A dose review found amounts under 1 gram a day ineffective and amounts above 3 grams only improved how the outbreak felt.
Does zinc shorten a herpes outbreak?
A zinc cream did in one small trial of 46 people, with healing in 5.0 days against 6.5. That trial used a cream, not a capsule, and the NIH does not link oral zinc to herpes.
Is the zinc in Reviralis enough to matter for herpes?
No study can say. Reviralis gives 10 mg of zinc per two capsules, 91% of the Daily Value. No herpes trial tested zinc capsules, so the label amount cannot be judged against any herpes result.
Should I take a supplement along with my antiviral?
Ask your clinician or pharmacist first. Do not replace or reduce a prescription for any supplement. Interactions are possible with some ingredients, which is why the label tells medicine users to consult a provider.
Why do some ads say a supplement works if studies do not?
Ads can rely on testimonials, lab results or implied claims. The FTC says a testimonial does not make a claim true, and FDA treats a supplement sold for a disease as a drug. Check the study itself.
Who wrote this09
Written and reviewed by
Pages built from the label, the order page and linked NIH, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a USA Authorized Reviralis Retailer. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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