The Stack Raises Rs 21.5 Cr Seed Funding to Expand Science-Backed Supplements

The Stack, a Goa-based supplements brand focused on clinically studied ingredients and transparent formulations, has raised Rs 21.5 crore in a seed funding round co-led by Sauce, OTP Ventures and Huddle Ventures. The company plans to use the fresh capital to expand its team, strengthen research and development, and broaden its product portfolio.

Founded in 2024, The Stack is building a supplements business around science-backed formulations, globally sourced ingredients and a quality-first approach. Rather than offering an extensive range of products, the startup currently focuses on five supplements across key health areas, including sleep, gut health and functional health.

The Stack's Seed Funding and Previous Investment

The Rs 21.5 crore seed round follows an earlier pre-seed funding round of Rs 5.5 crore in January 2026. That round was co-led by OTP Ventures and Huddle Ventures, with participation from angel investors.

The latest investment brings additional capital to support the company's next stage of growth. The Stack intends to invest in research and development, increase its team strength and introduce more products to its portfolio.

The funding comes as the company looks to establish itself as a trusted Indian supplements brand that follows global quality standards. Its approach centres on clinically studied ingredients and transparent formulations, with an emphasis on long-term consumer outcomes.

A Science-Backed Approach to Supplements

Co-founded by Shreya Jain and Kshitij Rihal, The Stack develops supplements using globally sourced ingredients that have been clinically studied.

The company follows a quality-first strategy, focusing on a limited selection of products rather than building a broad catalogue. Its existing portfolio addresses areas such as sleep, gut health and functional health.

The brand's positioning centres on formulation transparency and a science-backed approach to product development. As it expands, research and development is expected to play an important role in its plans to build out the range.

The company aims to create a supplements brand from India that meets global standards. Its stated focus on clinically studied ingredients and transparent formulations forms the foundation of that ambition.

Customer Retention and Subscription Behaviour

The Stack has reported encouraging customer retention and repeat-purchase behaviour as it builds its business.

According to the company, one in three customers places a second order within six months. It has also observed customers paying upfront for subscriptions covering six to 12 months, indicating that some buyers are committing to longer-term purchasing plans.

The company's customer base also contributes to revenue concentration. The Stack said its top 10% of customers account for 30% of revenue.

Referrals and word of mouth are another reported source of new customers. These channels suggest that existing customers are helping introduce the brand to new buyers, although the company has not disclosed the precise share of customer acquisition attributable to referrals.

The figures provide an early look at the company's purchasing patterns, but the available announcement does not disclose its total customer count, revenue, average order value or profitability.

Fivefold Growth and FY27 Expansion Plans

The Stack said it grew fivefold over six months and is targeting growth of six to seven times in FY27 compared with FY26.

Achieving that target would require the company to expand significantly from its FY26 base. However, the announcement does not provide the underlying revenue figures or clarify which specific operating metric the reported growth refers to.

The fresh funding is expected to support the company's expansion plans through team growth, research and development investment, and a larger product portfolio.

As The Stack develops new products, maintaining its stated focus on clinically studied ingredients, formulation transparency and quality will be central to its positioning in the supplements market.

What the Funding Means for The Stack

The Stack's latest seed round gives the company additional capital to develop its product range and strengthen its operations. Its existing focus on a small portfolio, repeat purchases and longer-term subscriptions offers an initial view of how the brand is approaching customer relationships.

The next phase will depend on how effectively it converts its reported early growth into sustained business expansion while maintaining its quality-first approach.

With Sauce, OTP Ventures and Huddle Ventures co-leading the Rs 21.5 crore round, The Stack will look to build on its earlier funding and pursue its FY27 growth target.

For now, the company is focused on expanding its team, investing in research and development, and introducing more products as it works toward building a trusted supplements brand from India.