No, unless the product is distributed only in Puerto Rico. FDA rules require all mandatory label information to appear in English, and only allow the predominant language to replace English for articles distributed solely in Puerto Rico or in a territory where another language predominates (21 CFR 101.15(c)(1)).
If your product will ship off the island, the mandatory information must be in English. In addition, if the label carries any text in a foreign language, such as Spanish, all mandatory information must also appear in that language (21 CFR 101.15(c)(2)). In practice, a bilingual label has to repeat all the mandatory information in both languages, not just the product name or marketing copy. The only exemption from that second requirement is for very small individual serving packages served with meals in restaurants, institutions and passenger carriers and not sold at retail, when the only foreign-language text is the name of the food.
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