Lais Ragweed M (Ambrosia Artemisiifolia (302))

Lais Ragweed M is an allergen extract used in allergy immunotherapy for ragweed‑related conditions.

• Allergic rhinitis: reduces nasal congestion, sneezing and itching caused by ragweed exposure.
• Seasonal allergic rhinitis: improves tolerance to ragweed pollen during peak seasons.
• Ragweed‑induced allergic rhinoconjunctivitis: alleviates both nasal and ocular symptoms associated with ragweed allergy.

• Ambrosia artemisiifolia extract works by gradually exposing the immune system to controlled amounts of ragweed allergen via the oromucosal route, promoting the development of allergen‑specific regulatory T cells and shifting the immune response from a Th2‑dominant, IgE‑mediated pattern toward a more tolerant, IgG‑dominant profile, thereby reducing hypersensitivity reactions.

Lais Ragweed M may cause local and systemic reactions, most of which are mild and transient.

Common Side Effects

• Oral itching or tingling: mild irritation in the mouth.
• Throat irritation: sensation of soreness or scratchiness.
• Local swelling: mild edema of the lips or tongue.
• Nausea: occasional upset stomach.
• Headache: mild to moderate intensity.
• Mild cough: brief irritation of the airway.

Serious or Rare Side Effects

• Anaphylaxis: severe, potentially life‑threatening allergic reaction.
• Severe swelling of the throat or tongue: may compromise breathing.
• Respiratory distress: difficulty breathing or wheezing.
• Systemic allergic reaction: widespread hives or rash.
• Angioedema: rapid swelling of face, lips, or eyes.
• Cardiovascular collapse: rare drop in blood pressure.

Before initiating therapy with Lais Ragweed M, consider the following precautions.

• Medical evaluation: confirm ragweed allergy through appropriate testing.
• Existing severe asthma: assess risk as immunotherapy may exacerbate symptoms.
• Recent anaphylaxis: avoid use until fully recovered and cleared by a physician.
• Concomitant beta‑blocker therapy: monitor closely due to potential interference with emergency treatment of reactions.
• Pregnancy and breastfeeding: use only if clearly needed and prescribed by a healthcare professional.
• Store at ambient temperature: keep in the original packaging, protect from moisture and direct light.

Lais Ragweed M may interact with other medications or therapies.

Major Interactions (Avoid)

• Concurrent allergen immunotherapy products: may increase risk of systemic reactions.
• Beta‑blockers: can mask symptoms of anaphylaxis and interfere with emergency treatment.

Moderate Interactions (Monitor Closely)

• ACE inhibitors: may enhance risk of angioedema.
• NSAIDs: can potentiate allergic responses in sensitive individuals.
• Immunosuppressants: may reduce efficacy of immunotherapy.
• Antihistamines: may blunt clinical assessment of reactions.
• Live vaccines: schedule administration apart from immunotherapy sessions.