Key Medicines

Part of Pharmacy and Apothecary

The most important medicinal preparations a community apothecary should prioritize — the core formulary that addresses the highest-burden conditions.

Why This Matters

A community rebuilding pharmaceutical capability cannot manufacture everything at once. Resources are limited, plant material must be harvested and processed, and practitioner time is finite. Prioritization is therefore not merely practical — it is ethical. Time spent preparing a low-value cosmetic remedy is time not spent preparing a life-saving analgesic or antimicrobial.

The medicines listed here represent the core formulary — the minimum set that allows a community apothecary to address the highest-burden conditions: pain, infection, fever, diarrhea, respiratory illness, wound care, and parasites. These were the diseases that killed most people before modern medicine, and they will be the diseases that kill most people again if modern supply chains fail. A well-stocked apothecary with these preparations can prevent many of those deaths.

This is not an exhaustive formulary. It is the foundation from which you expand based on your local disease burden, available plants, and community needs.

Pain and Fever

Willow bark preparation (contains salicin, the precursor to aspirin):

• Source: bark of white willow or related species; dried and powdered
• Preparation: decoction — 15-20g bark per 500 mL water, simmer 20 minutes
• Dose: 100-150 mL every 4-6 hours for fever; 100 mL every 6 hours for pain
• Notes: Do not give to children under 12 (Reye’s syndrome risk similar to aspirin). Stomach irritation is common — take with food. Slower onset than aspirin (1-2 hours) but longer duration.
• Also effective: meadowsweet aerial parts (gentler, less stomach irritation)

Valerian root preparation (sedative and muscle relaxant):

• Source: dried valerian root; harvest in autumn from second-year plants
• Preparation: cold infusion (4 hours in room-temperature water) preserves valerenic acid better than heat; or tincture in 60% alcohol
• Dose: 2-3g dried root equivalent per dose; tincture 2-4 mL
• Onset: 30-60 minutes; best taken 30 minutes before sleep

Infection and Antimicrobials

Garlic preparation (broad-spectrum antimicrobial):

• Source: fresh garlic cloves; allicin forms only when cell walls are crushed, then degrades rapidly with heat
• Preparation: crush raw and consume immediately, or cold-infuse in oil (use within 24 hours — longer risks botulism), or mix with honey for palatability
• Internal dose: 2-4 cloves raw daily for systemic infection
• Topical: crushed garlic in oil applied to wound surfaces with clean cloth, 30-60 minutes, then remove (skin irritation if left longer)
• Notes: Heating destroys allicin. Raw garlic is the effective medicine; cooked garlic has less antimicrobial activity.

Thyme preparation (antibacterial, antifungal, expectorant):

• Source: fresh or dried thyme herb, especially flowering tops
• Preparation for internal use: strong infusion, 5g per 250 mL, steep covered 15 minutes
• Preparation for topical use: steam distilled essential oil (see Essential Oil Distillation), dilute 2-3 drops per teaspoon carrier oil
• Dose: 250 mL infusion three times daily for respiratory infections; topical essential oil to infected skin twice daily

Honey (wound antiseptic and cough preparation):

• Source: any raw, unprocessed honey
• Wound application: apply thick layer directly to wound surface; cover with clean cloth. Change daily. Medical-grade manuka honey is most studied, but all raw honey has antimicrobial properties from hydrogen peroxide production.
• Cough preparation: heat 250 mL water, dissolve 2-3 tablespoons honey, add lemon juice and ginger. Dose: 50-100 mL as needed for throat irritation and cough.
• Preservation: many medicines dissolved in honey are preserved for months.

Digestive Conditions

Charcoal preparation (diarrhea, poisoning):

• Source: activated charcoal (wood charcoal can substitute in emergencies)
• Preparation: mix powdered charcoal in water — 1-2 tablespoons per 250 mL water
• Dose for diarrhea: 1-2 tablespoons every 4-6 hours; for suspected poisoning: immediate large dose (3-4 tablespoons) then seek all possible care
• Notes: Charcoal adsorbs many toxins and some pathogens. It also adsorbs medicines, so do not give charcoal within 2 hours of giving other medicines.

Ginger preparation (nausea, vomiting, stomach cramping):

• Source: fresh or dried ginger rhizome
• Preparation: decoction — 5-10g dried ginger per 500 mL water, simmer 15 minutes; or fresh ginger slices steeped in hot water
• Dose: 100-150 mL every 4-6 hours; tincture 1-2 mL per dose

Plantain mucilage (diarrhea, gut inflammation):

• Source: psyllium seeds or plantain seeds (Plantago species)
• Preparation: cold infusion of seeds in water for 4 hours; the seeds release a thick mucilage
• Dose: 2-5g seeds (dry weight) in 250 mL water, taken 2-3 times daily. Patient must drink additional water throughout the day.

Wound Care

St. John’s Wort oil (nerve damage, deep wounds):

• Source: fresh flowers of Hypericum perforatum, the distinctive yellow-flowered weed; they should turn the oil blood red
• Preparation: oil maceration — fill a jar with fresh flowers, cover with olive oil, seal, leave in warm sunlight for 4-6 weeks. Oil turns deep red when ready.
• Application: apply directly to wounds involving nerve tissue; also useful for burns and bruises

Calendula preparation (wound healing, antimicrobial):

• Source: dried calendula (pot marigold) flowers
• Preparation: oil infusion or water infusion for wound washing
• Application: apply oil infusion as topical salve component; use water infusion as wound wash

Respiratory Conditions

Elderberry preparation (viral respiratory infections, immune support):

• Source: ripe elderberries (Sambucus nigra or similar); must be cooked — raw berries contain cyanogenic glycosides
• Preparation: simmer berries in water 45 minutes with a small amount of cloves and cinnamon; strain; add equal weight honey to make syrup
• Dose: 1 tablespoon (15 mL) syrup 3-4 times daily at onset of illness; 1 tablespoon daily for prevention

Thyme steam inhalation (bronchitis, sinusitis):

• Preparation: make a strong thyme infusion (10g per 500 mL boiling water)
• Application: patient places face over steaming bowl with cloth tent to concentrate steam; inhale for 5-10 minutes; repeat 3 times daily

Parasites

Wormwood preparation (intestinal parasites):

• Source: dried Artemisia absinthium (wormwood) or Artemisia annua (sweet Annie)
• Preparation: cold infusion (heat destroys active compounds); 2-3g per 250 mL water, cold steep 8 hours
• Dose: 50-75 mL three times daily for 7-10 days
• Caution: strong herb; do not exceed dose. Do not use in pregnancy.

Pumpkin seeds (tapeworm):

• Source: fresh pumpkin or squash seeds
• Preparation: grind 100-200g raw seeds to paste; eat on empty stomach
• Follow with castor oil or other laxative 2 hours later to expel killed parasites
• Relatively safe; the active compounds (cucurbitin) have low toxicity to humans

Formulary Maintenance

Review and update your core formulary annually. Ask which conditions caused the most deaths or suffering in the past year, and whether your preparations adequately addressed them. Over time, you will develop local knowledge about which plants are most reliable and most available in your specific environment — and this local knowledge should override generic formularies.