Supplements start-up The Stack raises Rs 21.5 crore seed round led by Sauce, OTP, Huddle

The Stack, an Indian start-up that sells dietary supplements directly to consumers, has raised Rs 21.5 crore (about $2.2 million) in a seed round, the company announced on Wednesday, October 14, 2026. The round was co-led by the consumer-brands fund Sauce and existing investors OTP Ventures and Huddle Ventures, with AYRA Ventures also taking part. Angel investors include the founders of logistics company Delhivery, Sahil Barua, Kapil Bharati and Suraj Saharan, and the founders of wearables maker Ultrahuman, Mohit Kumar and Vatsal Singhal. The company plans to use the money for hiring, research and development and new products, and to move beyond its own website to large online marketplaces.

The Stack's pitch to investors rests on two things: a deliberately small range of products and strong repeat buying. Many customers pay for six to twelve months upfront through subscriptions, which gives the company steady revenue and lowers the cost of winning each sale again. For a young consumer brand, that kind of loyalty can matter as much as headline growth.

The investor list also says something about the sector. Two of the three co-leads were already backers, which suggests they were pleased with progress since January. Sauce, the new lead, focuses on consumer brands and has backed companies such as Supertails, Perfora, MyMuse and Hocco. Angel cheques from the founders of Delhivery and Ultrahuman add operating experience in logistics and health technology.

The next phase carries risk as well as opportunity. Selling on large marketplaces can bring many more customers but usually means lower margins and tougher competition from established brands. Adding new products such as iron and omega-3 supplements widens the range but makes it harder to keep the focus that the company says drives its repeat sales. Supplements are also a category where trust and quality control matter to buyers, so building credibility will be central to growth.

The company has not disclosed its new valuation or how much of the company the investors bought. Reports put its valuation after the January round at roughly Rs 27.5 crore.

Short-term: The Stack will hire, invest in product research and prepare launches in new categories, along with listings on major online marketplaces over the next 12 to 18 months.

Long-term: If it keeps its repeat-purchase rates while expanding, it could become a notable brand in India's online wellness market and attract larger rounds. If expansion dilutes its focus, growth could slow.

Who is affected: Consumers who buy supplements online, competing direct-to-consumer wellness brands, early-stage consumer investors, and marketplaces seeking new health brands.

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