Hoggar Night (Doxylamine Hydrogen Succinate)

Hoggar Night is indicated for short‑term management of two common conditions that affect sleep and nasal comfort.

• Short‑term relief of occasional insomnia when a non‑prescription sleep aid is desired.
• Temporary alleviation of allergic rhinitis symptoms such as sneezing, nasal congestion, and watery eyes.
• Management of hay‑fever related nasal irritation during peak pollen seasons.
• Reduction of mild itching or skin irritation caused by seasonal allergies.
• Support for occasional nighttime awakening caused by allergy‑related congestion.
• Option for patients who prefer a sedating antihistamine over non‑sedating alternatives.

• Doxylamine hydrogen succinate exerts its pharmacologic effect by competitively antagonizing peripheral H1 histamine receptors. By blocking the action of endogenous histamine at these sites, it reduces the central nervous system stimulation that normally promotes wakefulness, leading to sedation. The drug also possesses mild anticholinergic activity, which contributes to its drowsing properties. The antagonism is reversible and does not affect histamine synthesis. The sedative effect typically peaks within one to two hours after oral administration.

Like other first‑generation antihistamines, doxylamine may cause a range of adverse reactions, most of which are mild and transient.

Common

• Drowsiness or a feeling of sleepiness that may affect daytime alertness.
• Dry mouth, throat or nasal passages.
• Dizziness or light‑headedness, especially when standing quickly.
• Headache of mild to moderate intensity.
• Nausea or mild stomach discomfort.
• Blurred vision or difficulty focusing.

Serious

• Severe allergic reaction such as rash, itching, swelling of the face or throat, or difficulty breathing (anaphylaxis).
• Rapid, irregular, or pounding heartbeat (arrhythmia).
• Hallucinations, confusion, or marked agitation.
• Persistent vomiting or inability to keep fluids down.
• Seizures or convulsions.
• Excessive sedation leading to impaired coordination or accidents.

When considering Hoggar Night, several precautionary measures should be reviewed to ensure safe use.

• Avoid use in children under 12 years of age unless directed by a healthcare professional.
• Do not combine with alcohol, sedatives, or other central nervous system depressants.
• Use cautiously in patients with asthma, chronic obstructive pulmonary disease, or other respiratory conditions.
• Consider potential worsening of glaucoma or urinary retention in individuals with prostate enlargement.
• Pregnant or breastfeeding women should consult a physician before taking the product.
• Individuals with liver disease should discuss dosage and suitability with a healthcare provider.

Doxylamine can interact with other substances, potentially altering its sedative effect or increasing the risk of adverse reactions.

Avoid

• Alcohol and other CNS depressants (e.g., benzodiazepines, opioids, muscle relaxants).
• Other antihistamines, especially first‑generation agents, due to additive sedation.
• Monoamine oxidase inhibitors (MAOIs) and certain antidepressants that may enhance anticholinergic effects.
• CYP2D6 inhibitors (e.g., fluoxetine, paroxetine) as they may increase plasma concentrations of doxylamine.

Use with caution

• Anticholinergic drugs such as diphenhydramine, atropine, or tricyclic antidepressants.
• Medications that prolong the QT interval (e.g., certain antiarrhythmics, macrolide antibiotics).
• Herbal supplements with sedative properties, such as valerian or kava.
• CNS stimulants (e.g., caffeine, pseudoephedrine) may counteract the sedative effect.