Doxylamine Succinate is indicated for the following conditions-

• Allergic rhinitis
• Hypersensitivity reactions
• Excessive tearing
• Sneezing

Allergic rhinitis

Hypersensitivity

Excessive Tearing

• Two tablets at bedtime are recommended as a starting dose (Day 1). The patient can take two tablets at bedtime if this dose properly manages symptoms the next day.
• If symptoms continue until the afternoon on Day 2, the patient should continue taking two pills at bedtime on Day 2 and three tablets on Day 3 (one tablet in the morning and two tablets at bedtime).
• If these three tablets do not provide significant symptom relief on Day 3, the patient can begin taking four tablets on Day 4. (one tablet in the morning, one tablet mid-afternoon and two tablets at bedtime).
• Four tablets are the maximum daily dose suggested (one in the morning, one in the mid-afternoon and two at bedtime).

Commonly associated side effects include-

• dizziness
• asthenia
• headache
• constipation
• diarrhea
• blurred vision
• decreased coordination
• dry mouth/nose/throat 

Dizziness

Asthenia

Headache

Diarrhea

Dry Mouth

Blurred vision

• Due to the anticholinergic characteristics of doxylamine succinate, an antihistamine, Doxylamine Succinate may cause somnolence.
• If a woman is using any central nervous system (CNS) depressants, such as alcohol, she should not take Doxylamine Succinate
• Asthma, elevated intraocular pressure, narrow angle glaucoma, stenosing peptic ulcer, pyloroduodenal obstruction, and bladder-neck obstruction are all conditions in which Doxylamine Succinate should be taken with caution.
• Because Doxylamine Succinate contains pyridoxine hydrochloride, a vitamin B6 analog, extra levels from diet and vitamin B6 supplements should be measured.
• The combination of doxylamine and pyridoxine has minimal evidence in cases of hyperemesis gravidarum. These people should be seen by a doctor who specializes in their condition.