의료용품(ko) › Medicaments consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses or in forms or
Other medicaments, containing vitamins or other products of heading 29.36
HS 300450Korea → United States
1Overview
- Destination duty: Free (General, 3004.50.10.00) — No preferential agreement with Korea — the basic / MFN rate applies.
- Federal VAT / GST: None — The US has no federal VAT. State sales tax is not charged at import.
- This code covers: Other medicaments, containing vitamins or other products of heading 29.36
- Additional tariffs: Additional tariffs (HTS Chapter 99: Section 232/301/122) may apply on top of the rate shown — check the current Chapter 99 notes.
- Regime to watch: US duty-free de minimis suspended for all countriesSince 2025-08-29 Executive Order 14324 has suspended duty-free de minimis entry for shipments from every country. Parcels are now dutiable and need an entry with HS classification and origin, which structurally raises difficulty for small consignments.federalregister.gov
Key points
- De minimis is suspended indefinitely: non-postal modes since 2026-06-24, international mail since 2026-07-24. The US$800 duty-free entry no longer exists.
- No federal VAT or GST. State sales or use tax is a separate matter handled after import, not at the border.
- US$2,500 separates informal from formal entry. Mail shipments up to US$2,500 in HTSUS chapters 1-97 may use the new postal informal entry process, with duty due by the 7th day of the month following arrival.
- The importer of record may self-file in ACE, but formal entries require a customs bond, and ocean cargo also requires an Importer Security Filing (ISF 10+2) at least 24 hours before loading.
- Additional tariffs may apply as HTSUS Chapter 99 lines. As of 2026-09, verify the Section 232, Section 301 and surcharge position for your entry date rather than relying on a previously quoted number.
As of: 2026 HTS Rev.15
2Classification
HS6 names
- ko기타(제2936호의 비타민이나 그 밖의 물품을 함유한 것으로 한정한다)
- enOther medicaments, containing vitamins or other products of heading 29.36
- zh_hant其他醫藥製劑,含有維他命或第2936節之其他產品
- zh_hans其他医药制剂,含有维他命或第2936节之其他产品
United States tariff lines
| Line | Description |
|---|---|
| 3004.50.10.00 | Vitamin B2Medicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Containing vitamins synthesized wholly or in part from aromatic… |
| 3004.50.20.00 | Vitamin B12Medicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Containing vitamins synthesized wholly or in part from aromatic… |
| 3004.50.30.00 | Vitamin EMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Containing vitamins synthesized wholly or in part from aromatic… |
| 3004.50.40.00 | OtherMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Containing vitamins synthesized wholly or in part from aromatic… |
| 3004.50.50 | OtherMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 |
| 3004.50.50.05 | For veterinary useMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Other |
| 3004.50.50.10 | Combined with minerals or other nutrientsMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Other › Other › Single vitamins |
| 3004.50.50.15 | Vitamin B1 (thiamine)Medicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Other › Other › Single vitamins › Other |
| 3004.50.50.25 | Vitamin K1 (phytonadione)Medicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Other › Other › Single vitamins › Other |
| 3004.50.50.28 | OtherMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Other › Other › Single vitamins › Other |
| 3004.50.50.30 | Combined with minerals or other nutrientsMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Other › Other › Multiple vitamins |
| 3004.50.50.40 | OtherMedicaments (excluding goods of heading 3002, 3005 or 3006) consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses (including those in the form of transdermal administration systems) or in forms or packings for retail sale › Other, containing vitamins or other products of heading 2936 › Other › Other › Multiple vitamins |
Korea export-side line (reference)
- 3004501000비타민 A제제
- 3004502010비타민 B1제제
- 3004502090기타
- 3004503000비타민 C제제
- 3004504000비타민 D제제
- 3004505000비타민 E제제
- 3004506000비타민 H제제
- 3004507000비타민 K제제
- 3004509000기타
Top 3 United States rulings
- The tariff classification and country of origin of Ascorbic Acid Injection, USP in dosage form, from the United KingdomN359388 · ny
- The tariff classification of Thiamine Hydrochloride Injection in dosage form, from IndiaN347635 · ny
- The tariff classification of Leucovorin Calcium Injection in dosage form, from SwitzerlandN346621 · ny
As of: 2026 HTS Rev.15
3Duty & tax
No preferential agreement with Korea — the basic / MFN rate applies.
| Line | Description | General | Special | Column 2 |
|---|---|---|---|---|
| 3004.50.10.00 | Vitamin B2 | Free | — | 15.4¢/kg + 62% |
| 3004.50.20.00 | Vitamin B12 | Free | — | 15.4¢/kg + 145.5% |
| 3004.50.30.00 | Vitamin E | Free | — | 15.4¢/kg + 63.5% |
| 3004.50.40.00 | Other | Free | — | 15.4¢/kg + 49% |
| 3004.50.50 | Other | Free | — | 25% |
| 3004.50.50.05 | For veterinary use | — | — | — |
| 3004.50.50.10 | Combined with minerals or other nutrients | — | — | — |
| 3004.50.50.15 | Vitamin B1 (thiamine) | — | — | — |
| 3004.50.50.25 | Vitamin K1 (phytonadione) | — | — | — |
| 3004.50.50.28 | Other | — | — | — |
| 3004.50.50.30 | Combined with minerals or other nutrients | — | — | — |
| 3004.50.50.40 | Other | — | — | — |
Additional tariffs (HTS Chapter 99: Section 232/301/122) may apply on top of the rate shown — check the current Chapter 99 notes.
- · The United States has no federal value-added or goods-and-services tax. Customs collects duty and fees only.
- · Merchandise processing fee: 0.3464% of the entered value on formal entries, subject to a minimum and maximum that are re-indexed each fiscal year; informal entries pay a flat amount instead.
- · Harbor maintenance fee: 0.125% of the value on cargo arriving by vessel.
- · State sales or use tax may apply to the onward sale or use of the goods and is administered by state revenue departments, not by CBP.
- · Chapter 99 additional duties (Section 232, Section 301, any surcharge in force) are added to the ordinary rate; verify what applies on the entry date.
Landed-cost estimate
- Duty rate used
- 0%
- Customs value
- —
- Duty
- —
- Federal VAT / GST
- —
- Estimated total
- —
A rough estimate. The real amount depends on valuation, classification and origin determination.
As of: 2026 HTS Rev.15
4Requirements
- FD2FDA
Pharmaceutical products (medicaments, blood, dressings) - FDA-regulated drug/biologic (FD2). Potential/disclaimable flag; submit FDA entry data if FDA-regulated.
- Confidence:
- chapter-heuristic
- headingDEA
Medicaments (subset containing controlled substances) - DEA import registration/permit for scheduled-drug content. Substance-dependent, narrow.
- Confidence:
- chapter-heuristic
CBP does not publish a complete per-HS PGA flag file, so this is mapped with a chapter/heading heuristic.
Agencies involved
- U.S. Customs and Border Protection (CBP)Clears imports, assesses duty and fees, and enforces other agencies' requirements at the bordercbp.gov
- U.S. International Trade CommissionPublishes the Harmonized Tariff Schedule of the United States, including the Chapter 99 additional-duty provisionshts.usitc.gov
- U.S. Food and Drug Administration (FDA)Food, drugs, medical devices, cosmetics; Prior Notice and MoCRA registration and listingfda.gov
- USDA Animal and Plant Health Inspection Service (APHIS)Plant and animal products, permits and phytosanitary requirementsaphis.usda.gov
- Federal Communications Commission (FCC)Radio-frequency devices and equipment authorisationfcc.gov
- Consumer Product Safety Commission (CPSC)Consumer products and children's product certificationcpsc.gov
As of: 2026-08-27
5Documents
Korea export documents
- Export declaration (수출신고서)
- Issued by:
- Exporter or customs broker, filed in UNI-PASS
- When:
- Before loading
Carries the HS code, quantity, value, terms of sale, origin and whether drawback will be claimed.
Official page - Export declaration certificate (수출신고필증)
- Issued by:
- Customs
- When:
- Issued when the declaration is accepted
Used for zero-rated VAT, duty drawback claims, trade finance and insurance.
Official page - Commercial invoice
- Issued by:
- Exporter
- When:
- With the shipping documents
The destination customs authority uses it to set the customs value, so description, quantity, unit price, terms and origin must be accurate.
Official page - Packing list
- Issued by:
- Exporter
- When:
- With the shipping documents
Carton-level contents, weights, dimensions and marks.
Official page - Bill of lading or air waybill
- Issued by:
- Carrier or freight forwarder
- When:
- Issued after loading
Used for payment, including under a letter of credit, and for the buyer to take delivery.
Official page - FTA certificate of origin
- Issued by:
- Customs, the Korea Chamber of Commerce and Industry, or the exporter under self-certification
- When:
- Before the buyer claims preference
KORUS is self-certified with no prescribed form; the Korea-China FTA is authority-issued; RCEP follows the mechanism in the agreement. There is no agreement with Taiwan.
Official page - Strategic goods determination or export licence
- Issued by:
- Korea Strategic Trade Institute (KOSTI), Ministry of Trade, Industry and Energy
- When:
- Before exporting the item concerned
Dual-use items go through self-classification or an expert determination, and an export licence where one is required.
Official page - Health or quarantine certificate for export
- Issued by:
- MFDS, Animal and Plant Quarantine Agency and others
- When:
- When the destination requires it
For example a health certificate for exported food, a phytosanitary certificate, or an animal quarantine certificate. Food exported to mainland China additionally requires GACC overseas manufacturer registration.
Official page - Duty drawback claim documents
- Issued by:
- Exporter
- When:
- After the export is performed
Depending on whether the fixed-rate or the individual method is used, import declaration certificates and basic raw material tax payment certificates are needed.
Official page
United States import documents
- CBP Form 3461, Entry/Immediate Delivery
- Issued by:
- U.S. Customs and Border Protection
- When:
- At or before arrival, filed electronically in ACE
The release document. It may generally be filed up to five days before arrival.
Official page - CBP Form 7501, Entry Summary
- Issued by:
- U.S. Customs and Border Protection
- When:
- Within 10 working days of release
Carries the HTSUS classification, value and duty calculation. Duty may be paid entry by entry or on a periodic monthly statement.
Official page - Commercial invoice
- Issued by:
- Seller or exporter
- When:
- With the entry
Should identify buyer and seller, describe the goods, and state quantity, unit and total price, currency, terms of sale and country of origin.
Official page - Packing list
- Issued by:
- Seller or exporter
- When:
- With the entry
Carton-level contents, weights and marks, used during examination.
Official page - Bill of lading or air waybill
- Issued by:
- Carrier or freight forwarder
- When:
- Issued at loading
Evidence of the contract of carriage and of the right to take delivery.
Official page - Importer Security Filing (ISF 10+2)
- Issued by:
- Importer or its agent
- When:
- At least 24 hours before the cargo is loaded onto the vessel
Ocean cargo only. It does not apply to air, truck or rail shipments.
Official page - Customs bond, single transaction or continuous
- Issued by:
- Surety licensed by the U.S. Treasury
- When:
- In place before the entry is filed
Required for formal entries and for the new postal informal entry process.
Official page - Free trade agreement claim of origin
- Issued by:
- Exporter, producer or importer
- When:
- Held at the time the claim is made
For Korean-origin goods, KORUS uses self-certification with no prescribed form; the claim is made on the entry using the special program indicator KR. Taiwan and mainland China have no free trade agreement with the United States.
Official page - Partner government agency data
- Issued by:
- FDA, USDA, FCC, CPSC, EPA and others
- When:
- With the entry
Examples: FDA Prior Notice for food, cosmetic facility registration and product listing under MoCRA with a named U.S. responsible person, FCC declarations for radio-frequency devices, CPSC certificates for children's products.
Official page
6Procedure
- Pre-loading filingsThe importer or its agent files the Importer Security Filing (ISF 10+2) at least 24 hours before the cargo is loaded onto the vessel, and the carrier files its advance cargo manifest on the same 24-hour timeline.
- Entry filingCBP Form 3461 is filed in ACE, generally up to five days before arrival. Entry must be made within 15 calendar days of arrival, otherwise the goods are moved to a General Order warehouse.
- Review, examination and agency holdsCBP may select the shipment for document review, X-ray or a physical examination, and a partner government agency such as FDA, USDA or CPSC may place its own hold.
- ReleaseOnce CBP and any agency holds are cleared, the goods are released and may leave the port.
- Entry summary and paymentCBP Form 7501 is filed within 10 working days of release with duty, merchandise processing fee and harbor maintenance fee, paid entry by entry or on a periodic monthly statement.
- LiquidationCBP fixes the final duty at liquidation, normally within 314 days of entry. Post-summary corrections and protests have their own separate deadlines.
- Advance manifestThe air carrier transmits its advance cargo information before arrival. The Importer Security Filing does not apply to air cargo.
- Entry filingCBP Form 3461 is filed in ACE, commonly before the aircraft lands, so that release can follow shortly after arrival.
- Review and agency holdsCBP and partner government agencies review the entry and may examine the shipment at the airport cargo facility.
- Release and deliveryAfter release the goods leave the bonded air cargo facility.
- Entry summary and liquidationCBP Form 7501 and duty follow within 10 working days of release, then liquidation as for ocean cargo.
- Advance dataThe express consignment operator or the postal operator transmits shipment data to CBP before arrival.
- EntrySince 2026-06-24 low-value goods can no longer be released from the manifest. Express shipments are entered as informal entries, normally Entry Type 11, and anything above US$2,500 requires a formal entry.
- Mail shipmentsSince 2026-07-24 mail shipments valued at US$2,500 or less and classifiable in HTSUS chapters 1 to 97 may use the postal informal entry process, filed by a licensed customs broker or by the owner or purchaser, with a basic importation and entry bond in place.
- Duty assessment and paymentDuty and fees are calculated on the declared value. Express operators normally advance the duty and bill the buyer; under the postal process duty is due no later than the 7th day of the month following the package's arrival.
- Agency screening and deliveryFood, cosmetics, drugs, radio devices and children's products still require their agency data, and goods subject to quota, antidumping or countervailing duties, Chapter 98 or 99 duties, or a free trade agreement claim are excluded from the postal informal process.
- Declaration on arrivalTravellers declare everything acquired abroad, on CBP Form 6059B or its electronic equivalent, and answer the CBP officer's questions at the port of entry.
- Personal exemptionsReturning U.S. residents generally have a personal exemption of US$800. Non-residents' accompanied personal and household articles of US$200 or less remain exempt under 19 U.S.C. 1321(a)(2)(B).
- Commercial merchandiseGoods carried for resale are not covered by a personal exemption. They require an informal or formal entry like any other import, and partner government agency rules still apply.
- PaymentDuty on declared goods above the exemption is paid at the port of entry before the traveller leaves the customs area.
Show Korea export-side steps
- Pre-shipment reviewFix the HS code and determine whether the item is a strategic good. Destination-side registrations, such as GACC registration for food going to mainland China or MoCRA registration for cosmetics going to the United States, must be completed before shipment.
- Export declarationThe exporter or a customs broker files the declaration in UNI-PASS. If drawback will be claimed, the relevant fields are completed at this point.
- Review, examination and acceptanceCustoms reviews the documents, examines the goods where necessary, accepts the declaration and issues the export declaration certificate.
- Delivery and loadingThe container is delivered to the CY or CFS and loaded. Bonded transport is used where the goods have to move to another customs district.
- Loading deadlineLoading must be completed within 30 days of acceptance. If a delay is expected, an extension of the loading deadline is requested.
- Documents and follow-upCollect the bill of lading for payment, then file the zero-rated VAT return and the duty drawback claim.
7Difficulty
Score: 0.87
A signal derived from public data, not advice.
Why this reading
- regime[FDA] Finished medicaments; if a controlled substance is present, DEA import registration/permit applies as well.fda.gov2026-09-07
- requirement2 destination import requirement(s) found: Medicaments (subset containing controlled substances) - DEA , Pharmaceutical products (medicaments, blood, dressings) - FDdea.gov2026-09-07
- ambiguityClassification is contested — rulings for this HS6 scatter across several subheadings and are often decided against neighbouring codesrulings.cbp.gov2026-09-07
- timingSince 2025-08-29 Executive Order 14324 has suspended duty-free de minimis entry for shipments from every country. Parcels are now dutiable and need an entry with HS classification and origin, which structurally raises difficulty for small consignments.federalregister.gov2026-09-07
Components
| Import requirements | 0.76 | Medicaments (subset containing controlled substances) - DEA import registration/permit for scheduled-drug content. Substance-dependent, narrow. dea.govPharmaceutical products (medicaments, blood, dressings) - FDA-regulated drug/biologic (FD2). Potential/disclaimable flag; submit FDA entry data if FDA-regulated. fda.govconfidence=chapter-heuristic — CBP는 HS별 PGA 플래그 전량 공개 파일을 제공하지 않아 chapter/heading 휴리스틱 매핑을 사용함 customs_v0.sqlite:us_requirements |
|---|---|---|
| Classification ambiguity | 0.54 | US 결정례 25건 · 하위 세번 5종으로 분산 rulings.cbp.govUS CROSS 25건 중 복수 세번 결정 비율 12% · 같은 사건에서 함께 검토된 다른 HS6 2개 rulings.cbp.gov |
| Regulatory regime | 1.00 | FDA drug (+ DEA if controlled) fda.gov |
As of: 2026-09-07
8Cases
- The tariff classification and country of origin of Ascorbic Acid Injection, USP in dosage form, from the United KingdomN359388 · nyDecided line: 3004.50.5020Date: 2026-04-01
- The tariff classification of Thiamine Hydrochloride Injection in dosage form, from IndiaN347635 · nyDecided line: 3004.50.5020Date: 2025-05-06
- The tariff classification of Leucovorin Calcium Injection in dosage form, from SwitzerlandN346621 · nyDecided line: 3004.50.4000Date: 2025-04-07
- The tariff classification and country of origin of Thiamine Injection in dosage formN342540 · nyDecided line: 3004.50.5020Date: 2024-10-08
- The tariff classification of Tretinoin Cream 0.025%, 0.05% and 0.1% in dosage form, from CanadaN338651 · nyDecided line: 3004.50.5020Date: 2024-03-20
- The tariff classification of RAYALDEE® (Calcifediol) extended-release capsules in dosage form, from IrelandN338434 · nyDecided line: 3004.50.5020Date: 2024-03-15
- The tariff classification of Thiamine Hydrochloride Injection in dosage form, from ChinaN331874 · nyDecided line: 3004.50.5020Date: 2023-04-18
- The tariff classification of Cyanocobalamin Injection in dosage form, from FranceN327288 · nyDecided line: 3004.50.5020Date: 2022-08-18
- The tariff classification of Tretinoin Cream 0.05 % and 0.1 %, in dosage form, from CanadaN325468 · nyDecided line: 3004.50.5020Date: 2022-05-06
- The tariff classification of Cyanocobalamin Injection in dosage form, from FranceN318542 · nyDecided line: 3004.50.5020Date: 2021-04-21
- The tariff classification of Phytonadione Tablets in dosage form, from IndiaN306225 · nyDecided line: 3004.50.5020Date: 2019-10-02
- The tariff classification and country of origin of Phytonadione Injectable Emulsion 10 mg/mL in dosage form, from SwitzerlandN305364 · nyDecided line: 3004.50.5020Date: 2019-08-13
- The tariff classification of Levoleucovorin Injection in dosage form, from SwitzerlandN302138 · nyDecided line: 3004.50.4000Date: 2019-05-08
- The tariff classification of Levoleucovorin Calcium Injection in dosage form, from SwitzerlandN302553 · nyDecided line: 3004.50.4000Date: 2019-02-27
- The tariff classification of Phytonadione Tablets in dosage form, from IndiaN294563 · nyDecided line: 3004.50.5020Date: 2018-03-20
Show rulings from other countries (15)
- KROther medicaments containing vitamins, for retail sale; Party Patch Hangover Defense Topical Patch
- KROther medicaments containing vitamins; Nutriband Energy patch; U.S.A
- KROther medicaments containing vitamins; Nutriband Vitamin patch; U.S.A
- KRBYTOX THE HANGOVER PATCH(스킨 모이스처 라이징 비타민 팩)
- KRTWO ENERGY PATCHES(스킨 리프레싱 비타민 팩(NRG 긍정에너지))
- KRMedicaments; 보비스타트-F; FRANCE
- KRMedicaments ; WillowVet Vitalyt(5L) ; FRANCE
- KRMedicaments; Ocuvite PresserVision, HS43270N; U.S.A
- KRMedicaments containing Vitamin A derivative ; 이소티나연질캅셀(Isotina soft cap) ; KOREA
- KRMedicament containing vitamins(신청품명 : Macuvit Zinc;544.6mg/capsule)
- KRMedicament(Vitamiv E 400 I.U)
- KRMedicament containing vitamin
- KRMedicament containing vitamin (Stress Formula)
- KRMedicament containing vitamin (Multi Vitamin with Kuensan)
- KRVitamin preparation; HEMES Multi
Sources: Federal Register: Indefinite Suspension of the De Minimis Exemption for Merchandise Arriving Through All Modes Other Than the International Postal Network · Federal Register: Indefinite Suspension of the De Minimis Exemption for Mail Shipments and New Postal Informal Entry Process · Federal Register: Notice of Implementation of Executive Order 14324, Suspending Duty-Free De Minimis Treatment for All Countries · CBP Form 7501, Entry Summary (revision 02/26) · CBP: Importer Security Filing (10+2) · Harmonized Tariff Schedule of the United States · Supreme Court of the United States: Learning Resources, Inc. v. Trump (No. 24-1287) · FDA: Registration and Listing of Cosmetic Product Facilities and Products · Korea Customs Service: Export clearance · Korea Customs Service UNI-PASS · Korea Customs Service FTA Portal · Korea Strategic Trade Institute (Yestrade) · Korea Law Information Center: Customs Act, Foreign Trade Act · Animal and Plant Quarantine Agency
I am a: Customs broker — Changes which blocks are emphasised