Does FDA approve herbal supplements before they are sold?

Generally no. Dietary supplements are not approved by FDA as drugs for safety and effectiveness before marketing. Manufacturers are responsible for safety and labeling; FDA can act against unsafe or misbranded products after they reach the market. A store shelf placement next to an approved drug does not mean the herb was reviewed the same way.

Do third-party seals prove an herb will work?

No. Independent testing can increase confidence in identity, dose, and manufacturing quality. It does not prove a health claim or show that the product is indicated for your condition. NCCIH and NIH Office of Dietary Supplements materials treat quality marks as a quality step, not as evidence of clinical benefit.

Which herb–drug interactions matter most?

St. John’s wort can lower levels of many medicines through enzyme and transporter induction, including some transplant, HIV, and oral contraceptive drugs. Other botanicals can increase bleeding, sedation, blood pressure, or glucose change. Anticoagulants, chemotherapy, and upcoming surgery need a pharmacist or prescribing clinician to review every label before you start an herb.

Can I use an herb instead of a prescribed medicine?

Not as a substitute for indicated treatment. A few botanicals have modest evidence for narrow uses; many blends do not. Stopping a blood-pressure drug, anticoagulant, insulin, or cancer therapy to “go natural” is a medical decision that belongs with the prescriber. Delay of proven care is a documented harm of unsupervised herbal protocols.

Alternative Medicine

Herbal Medicine: Evidence, Interactions, and Product Quality

Overview

Herbal medicine means plant-derived products used for a health purpose: teas, tinctures, capsules, standardized extracts, and multi-ingredient formulas. A common name on a bottle does not specify species, plant part, extraction method, dose, or purity. Evidence for one preparation cannot be transferred to another. Natural does not mean safe or effective. In U.S. clinics this should be a product-specific review with a licensed clinician, not a protocol sold as a cure.

Some botanicals have useful data for narrow indications. Many popular “hormone balance,” “detox,” or “immune boost” blends do not. NCCIH’s herb summaries and the NIH Office of Dietary Supplements fact sheets are starting points for product-by-product evidence, not a license to stack powders. Benefit, when it exists, is usually modest. Dietary supplements are generally not FDA-approved as drugs before marketing. Labels can be incomplete, doses can vary, and some products—especially those sold for weight loss, sexual function, or athletic performance—have been contaminated or adulterated with undeclared drugs.

Interactions are part of the clinical question. St. John’s wort can reduce the effectiveness of many medicines. Other herbs can increase bleeding, sedation, liver injury, blood-pressure change, or perioperative risk. Pregnancy, breastfeeding, childhood, liver or kidney disease, cancer therapy, transplant medicines, anticoagulants, and planned surgery require specialist review before use. FDA consumer pages warn that mixing supplements with prescription drugs can endanger health even when each product looks “gentle” on its own.

This page is for people offered an herbal protocol at a longevity or integrative clinic. It does not rank brands and it does not promise disease reversal. Prefer a physician, nurse practitioner, physician assistant, pharmacist, or licensed naturopathic doctor who will reconcile medicines and say when evidence is weak. If symptoms suggest liver injury, bleeding, infection, or another urgent problem, seek standard medical care rather than another herb trial.

Identify the exact species, part, extract, and dose—not a marketing category.
Keep indicated medical treatment in place unless the prescriber changes it.

Benefits

Some specific, standardized botanicals have evidence for limited indications

A licensed review can identify interactions, duplicates, and unsafe doses

Product-quality discussion can reduce contamination and adulteration risk

Creates monitoring and stop rules if adverse effects appear

Keeps herbal use complementary rather than a substitute for indicated care

Preparation

Bring the bottle or a clear photo of each label and a complete medicine list. Note surgery dates, pregnancy or breastfeeding, allergies, and liver or kidney disease. Write the single symptom or goal you hope the herb will address. Do not stop a prescribed drug on your own before the visit. Seek urgent care first for jaundice, heavy bleeding, or severe allergic symptoms.

Recovery & Aftercare

There is no procedural downtime. If a product continues, watch for rash, unusual bleeding, jaundice, dark urine, palpitations, severe stomach pain, or unexpected sedation. Stop the product and seek care for those signs. Tell every clinician and pharmacist about herbs before procedures or new prescriptions. A “healing crisis” is not a reason to ignore liver or bleeding symptoms.

Risks & Considerations

Herbs can cause allergy, liver or kidney injury, bleeding, arrhythmia, sedation, and changes in blood pressure or glucose. Interactions with anticoagulants, chemotherapy, transplant drugs, HIV therapy, and antidepressants are documented. Contamination and undeclared pharmaceuticals occur, especially in weight-loss and sexual-enhancement products. Pregnancy and perioperative use add risk. Delay of proven care while an unsupervised protocol is tried first is another serious harm.

Herbal Medicine: Evidence, Interactions, and Product Quality

Overview

Benefits

The Procedure

Identify the exact product

Reconcile medicines and conditions

Grade evidence for the stated goal

Review quality and interaction risk

Agree on a keep, change, or stop plan

Preparation

Recovery & Aftercare

Risks & Considerations

Frequently Asked Questions

References

Guides

For Providers

Company

Ideal Candidates

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