Here is a list of some herbs you can try for tea preparation, along with a brief indication of their use.
TEA HERB INDICATION FOR USE
Lemon balm leaves — Headache, herpes, insomnia
Basil leaves — Soothing and cleansing, intestinal parasites, acne, immune stimulant
Angelica root — Flatulence, respiratory ailments, arthritis
Birch leaves — Bladder tonic
Calendula flower — Indigestion, skin troubles
Catnip leaves — Headaches, restlessness, digestive aid, infection prevention
Chamomile flowers — Headaches, nervousness, indigestion, ulcers, arthritis, and infection prevention
Chickweed — Coughs, colds
Dandelion leaves and root (simmered) — Liver and kidney trouble, PMS, weight loss, hypertension, yeast infections
Elderflower — Chills and fever
Fenugreek seeds — Cleansing and soothing, cholesterol control, arthritis
Hyssop — Nervousness, fever, herpes, and coughs
Lavender flowers — Headache, nervousness, sleep
Lemongrass — Very refreshing, uplifting
Mullein flowers — Coughs, inflammation, hemorrhoids and diarrhea
Nettle leaves — Kidney troubles, hypertension, gout, hay fever, PMS, and scurvy
Oatstraw (simmer) — Dry, brittle hair and nails
Oregano – Colds, fever
Passionflower – Sleep, tranquility
Peppermint — Flatulence, nausea
Plantain — Colds
Red clover flowers (simmer) — Colds, skin problems, blood cleanser
Red raspberry — Profuse menstruation, preparation for birth
Rosemary – Alopecia, circulation, nervousness, and depression, food poisoning preventive, decongestant
Rosehips (careful not to boil) — Colds and coughs, flu
Sage — Fevers, tonic, wounds, digestive aid, blood sugar regulation, sore throat
Thyme — Colds, indigestion, cough remedy
Valerian — Tension, headaches, sleep
Yarrow — Colds, indigestion, cough remedy