Buyer Guides
GABA Capsules: What to Put in Your Manufacturing Brief
Practical Manufacturing Brief · 6 min read · Published 2026-10-12 · Updated 2026-10-12
If two quotes both say "GABA capsules," you still need to know whether they describe the same product. The GABA amount, capsule shell, bottle count and packaging scope all affect what you are comparing. Put those details in one brief before choosing an offer or sending artwork to print.
For a starting point, the VITHELO GABA capsule reference uses gamma-aminobutyric acid (GABA), a transparent HPMC hard capsule and a 60-capsule bottle, with no added flavor. Its serving design is one capsule. The GABA amount per capsule remains to be agreed for the project. These are development specifications, so the product image illustrates the intended presentation rather than proving a finished batch.
Start with the GABA amount, not just the capsule count
A one-capsule serving tells your team how many capsules make up a serving. It leaves another field to fill in: the amount of GABA in that capsule. Keep the ingredient amount separate from the total powder fill, which may include other ingredients.
When comparing quotations, put the requested GABA amount beside each offer. A lower bottle price tells you little if the offers use different amounts, serving sizes or formulas. If a supplier lists only total fill weight, ask for the ingredient breakdown before comparing it with an offer that states the GABA amount.
| Field | Starting specification | What your brief needs to settle |
|---|---|---|
| Primary ingredient | Gamma-aminobutyric acid (GABA) | Ingredient specification and amount per capsule |
| Serving design | One capsule per serving | Whether to retain that design for your project |
| Capsule shell | Transparent HPMC hard capsule | Capsule size and any appearance changes |
| Bottle count | 60 capsules | Pack count and the packaging details included in the quote |
| Flavor | No added flavor | Any changes to the ingredient or formula requirements |
What HPMC tells you about the shell
HPMC means hydroxypropyl methylcellulose, also called hypromellose. Here it identifies the capsule shell material. Write down the shell material and appearance in your brief so a sample, quotation and final specification can be compared against the same request.
Suppose your brand wants a transparent capsule and a particular vegan claim on the label. Those are separate requests. The shell specification addresses the capsule material; the claim needs supporting information for the complete formula and finished product. Include the exact claim you want reviewed, rather than leaving the team to infer it from "HPMC."
If capsule size is still open, flag it as a decision for sample review. You can then discuss the physical capsule alongside the proposed ingredient amount, without treating the packaging image as a size specification.
A 60-capsule bottle still needs a packaging brief
For an online brand, the bottle has to work with the product page and the artwork. For a distributor, the discussion may also need bottles per shipping carton, carton markings and the delivery location. Describe your sales channel and the packaging you expect in the quote; "60 capsules" covers the count inside the bottle, not the rest of that scope.
Before artwork goes to print, line up the product specification and the label text. The ingredient amount, serving size and bottle count should agree. Put the country where you plan to sell in the brief as well. "Europe" is less useful than the named destination country and required label language.
Keep the artwork decision distinct from any outstanding formula, testing or market review. You can like the bottle design while still waiting for the information needed to approve the product. Record which parts are settled so the next person handling the file knows what is ready.
Make sample feedback specific enough to use
A message such as "the capsule looks different" leaves room for several interpretations. Attach a photo, identify the sample version or date, and describe the difference: shell appearance, capsule size, fill appearance or printed bottle information. If the formula changed too, note that separately.
For a repeat order, reference the agreed specification and the previously accepted sample version. This gives the supplier a clear comparison when you ask whether a new sample or document relates to the same product.
A certificate of analysis, often shortened to COA, also needs context. Ask which material or finished product it covers and which batch or sample it identifies. A document for the ingredient alone does not answer every question about the filled capsule. Name the evidence you need for the decision you are making; do not assume every document in a sample pack covers the same item.
Compare quotes on the same basis
Before choosing an offer, align the currency, order quantity and price unit. A per-capsule price and a per-bottle price need the same capsule count before they can be compared. Packaging, freight and any separate development charges should be visible, rather than left inside an unspecified total.
MOQ means minimum order quantity. Ask whether the quoted minimum applies to filled capsules, packed bottles or a particular packaging component. For timing, state the event you need to plan around, such as goods ready to ship or arrival at your warehouse, and ask what the quoted schedule actually covers.
VITHELO's GABA product page does not set a fixed MOQ, price or delivery date. Your requested quantity, formula and packaging scope belong in the inquiry so those terms can be discussed for the project.
An email brief you can copy
Use this as a first inquiry, replacing the brackets with your project details. It is short enough to send before you have every production decision settled.
For a broader request for quotation (RFQ), the RFQ preparation guide covers the wider project inputs. When you are ready to discuss this reference, send your GABA capsule requirements to VITHELO.