Question

What are some over-the-counter medications to treat anxiety?

Answer 1

First generation antihistamines in some cases can help. And a various assortments of natural supplements.

Explanation:

First Generation Anti-Histamines
Diphenhydramine
Doxylamine
Dimenhydrinate
Cyclizine
Promethazine (Dependent on the country, in the USA this is Rx only)
Hydroxyzine (See above)

Natural Supplements
Inositol
Lavender
Passionflower
L-Lysine
L-Arginine
Valerian
L-Theanine
Omega-3-Fatty Acids
GABA (Gamma-Aminobutyric Acid)
Ginkgo Biloba
Chamomile
Magnesium
Lemon Balm
Melatonin
Skullcap

(Note: This is not by all means an extensive list of all OTC medications/supplements)