Orthomolecular D-Hist Natural D‑Hist®

Orthomolecular’s Natural D-Hist offers non-drowsy allergy support using a blend of quercetin, stinging nettle, vitamin C, and bromelain. This targeted formula helps regulate histamine response, support respiratory health, and promote clear sinuses—ideal for seasonal relief without traditional side effects.

DESCRIPTION

Natural D‑Hist® takes a multi‑targeted, botanical approach to allergy support, going beyond traditional antihistamines. It stabilizes mast cells, supports mucus balance, and promotes sinus clarity—without causing drowsiness.

Key Ingredients & Actions

Vitamin C (300 mg per 2‑capsule dose): Supports immune health and helps deactivate excess histamine
Quercetin (400 mg): Flavonoid antioxidant that stabilizes mast cells to regulate histamine release
Stinging Nettle Leaf (400 mg): Traditionally used for sinus and nasal relief by balancing inflammatory responses
Bromelain (100 mg, 2,400 GDU/g): Enzyme from pineapple that supports mucosal health and boosts quercetin absorption
N‑Acetyl Cysteine (50 mg): Aids in thinning mucus and clearing airways; precursor to glutathione

Benefits & Effects

Supports sinus & respiratory health
Promotes clear nasal passages and normal mucus viscosity
Balances histamine response without drowsiness Offers antioxidant and anti-inflammatory support during seasonal shifts

Dosing Instructions

Loading dose: 2 capsules, 3× per day with meals for 7–10 days
Maintenance: 2 capsules daily, or as recommended

Quality & Formulation

Made from vegetable capsules, free from gluten, yeast, artificial colors/flavors
Produced in cGMP-compliant facilities and meets professional-grade standards