ViroGuard provides lysine which helps reduce the occurrence of facial cold sores. It also contains highly bioavailable zinc amino acid chelate to support wound healing and to maintain healthy immune system function, as well as helping to support immune system health.

• Lysine (as hydrochloride) 530.98 mg (equiv. to lysine 425 mg)
• Zinc (as zinc amino acid chelate) 2.5 mg
• Melissa officinalis (lemon balm) leaf dry 107.14 mg (equiv. to dry 750 mg equiv. to rosmarinic acid 5.36 mg)
• Echinacea purpurea (echinacea) herb fresh 9.44 mg (equiv. to fresh 425 mg)

Adults: Take 1 capsule three times a day, or as professionally prescribed.

If you are pregnant or breastfeeding, talk to your health professional before use.

Contains phenylalanine, sulfites and soya bean products.

Avoid combination -

Echinacea: Etoposide - Other antineoplastic agents

Probable etoposide interaction with Echinacea.

Zinc: Demeclocycline - Tetracyclines

Interactions with the absorption of tetracyclines.

Zinc: Minocycline - Tetracyclines

Interactions with the absorption of tetracyclines.

Zinc: Norfloxacin - Quinolones

Norfloxacin interaction with antacids and minerals.

Zinc: Tetracycline - Tetracyclines

Effect of zinc sulphate on the absorption of tetracycline and doxycycline in man.

Caution -

Echinacea: CYP3A4 substrates

Analysis of the Inhibitory Potential of Ginkgo biloba, Echinacea purpurea and Serenoa repens on the Metabolic Activity of Cytochrome P450 3A4, 2D6 and 2C9

In vivo assessment of botanical supplementation on human cytochrome P450 phenotypes: Citrus aurantium, Echinacea purpurea, milk thistle, and saw palmetto

Echinacea: Caffeine - CYP1A2 substrates

In vivo assessment of botanical supplementation on human cytochrome P450 phenotypes: Citrus aurantium, Echinacea purpurea, milk thistle, and saw palmetto

The effect of echinacea (Echinacea purpurea root) on cytochrome P450 activity in vivo

Echinacea: Midazolam - Sedatives, hypnotics

The effect of echinacea (Echinacea purpurea root) on cytochrome P450 activity in vivo.

In vivo assessment of botanical supplementation on human cytochrome P450 phenotypes: Citrus aurantium, Echinacea purpurea, milk thistle, and saw palmetto

Echinacea: Tolbutamide - Hypoglycaemic agents

The effect of echinacea (Echinacea purpurea root) on cytochrome P450 activity in vivo

Echinacea: Warfarin - Anticoagulants, antithrombotics

Pharmacokinetic and pharmacodynamic interactions of echinacea and policosanol with warfarin in healthy subjects.

Rosemary: Iron supplements - Multivitamins and minerals

Green tea or rosemary extract added to foods reduces nonheme-iron absorption.

Zinc: Cephalexin - Cephalosporins

The Effect of Staggered Administration of Zinc Sulfate on the Pharmacokinetics of Oral Cephalexin

Zinc: Penicillamine - Antirheumatoid agents

Treatment of Wilson's disease with zinc: XI. Interaction with other anticopper agents.

Controlled trial of D-penicillamine in rheumatoid arthritis. Dose effect and the role of zinc.

Inconclusive -

Lemon balm: Thyroid hormones and antithyroid agents

In vitro assay of thyroid disruptors affecting TSH-stimulated adenylate cyclase activity